/* ====================================================
   NEUROGAME — style.css
   ==================================================== */

/* ── Reset ────────────────────────────────────────── */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ── Variáveis de tema ────────────────────────────── */
:root {
    --bg-primary: #f0f4ff;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e8eeff;

    --grad-start: #5b6ef5;
    --grad-end: #8b5cf6;

    --accent-start: #fbbf24;
    --accent-end: #f59e0b;

    --text-primary: #1e1b4b;
    --text-secondary: #4338ca;
    --text-tertiary: #6b7280;
    --text-inverted: #ffffff;
    --text-highlight: #fbbf24;
    --text-accent: #5b6ef5;

    --border-color: #c7d2fe;
    --shadow-sm: 0 2px 8px rgba(91, 110, 245, .12);
    --shadow-md: 0 8px 24px rgba(91, 110, 245, .18);
    --shadow-lg: 0 16px 40px rgba(91, 110, 245, .22);
    --shadow-color: rgba(91, 110, 245, .15);
    --shadow-color-hover: rgba(91, 110, 245, .28);

    --btn-primary-bg: #fbbf24;
    --btn-primary-text: #1e1b4b;
    --btn-primary-hover: #f59e0b;
    --btn-secondary-border: rgba(255, 255, 255, .8);
    --btn-secondary-text: #ffffff;
    --btn-secondary-hover: rgba(255, 255, 255, .15);

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --transition: .25s cubic-bezier(.4, 0, .2, 1);
}

body.dark-mode {
    --bg-primary: #0f0e1a;
    --bg-secondary: #1a1830;
    --bg-tertiary: #252340;

    --grad-start: #7c8ffb;
    --grad-end: #a78bfa;

    --text-primary: #eef2ff;
    --text-secondary: #a5b4fc;
    --text-tertiary: #94a3b8;
    --text-inverted: #0f0e1a;
    --text-accent: #818cf8;

    --border-color: #312e6a;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, .4);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, .5);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, .6);
    --shadow-color: rgba(0, 0, 0, .4);
    --shadow-color-hover: rgba(0, 0, 0, .6);
}

/* ── Base ─────────────────────────────────────────── */
body {
    font-family: 'Nunito', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition), color var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Header / Nav ─────────────────────────────────── */
.header {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.navbar {
    padding: .9rem 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-inverted);
    font-size: 1.5rem;
    font-weight: 900;
    text-decoration: none;
    letter-spacing: -.5px;
}

.logo i {
    font-size: 1.8rem;
    color: var(--text-highlight);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.6rem;
    flex-wrap: wrap;
}

.nav-menu a {
    color: rgba(255, 255, 255, .9);
    text-decoration: none;
    font-weight: 700;
    font-size: .92rem;
    transition: color var(--transition);
    letter-spacing: .3px;
}

.nav-menu a:hover {
    color: var(--text-highlight);
}

.theme-toggle-icon {
    background: rgba(255, 255, 255, .15);
    border: none;
    color: #fff;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background var(--transition);
    flex-shrink: 0;
}

.theme-toggle-icon:hover {
    background: rgba(255, 255, 255, .3);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 24px;
    height: 3px;
    background: #fff;
    border-radius: 3px;
    transition: var(--transition);
}

/* ── Hero ─────────────────────────────────────────── */
.hero {
    background: linear-gradient(135deg, var(--grad-start) 0%, var(--grad-end) 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    color: #fdfbfb;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 70% 50%, rgba(251, 191, 36, .12) 0%, transparent 60%),
        radial-gradient(ellipse at 20% 80%, rgba(139, 92, 246, .2) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    padding: 4rem 24px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, .15);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, .25);
    border-radius: 100px;
    padding: 6px 16px;
    font-size: .85rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
    letter-spacing: .5px;
}

.hero-content h1 {
    font-size: clamp(2.4rem, 5vw, 3.8rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.highlight {
    color: var(--text-highlight);
    text-shadow: 0 0 30px rgba(251, 191, 36, .5);
    animation: glow 2s ease-in-out infinite alternate;
}

.hero-content>p {
    font-size: 1.1rem;
    opacity: .9;
    margin-bottom: .5rem;
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--text-highlight);
    font-weight: 700;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    padding: .85rem 2rem;
    border-radius: 100px;
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: none;
    text-decoration: none;
    font-family: 'Nunito', sans-serif;
}

.btn-primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    box-shadow: 0 4px 20px rgba(251, 191, 36, .4);
}

.btn-primary:hover {
    background: var(--btn-primary-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(251, 191, 36, .5);
}

.btn-secondary {
    background: transparent;
    color: var(--btn-secondary-text);
    border: 2px solid var(--btn-secondary-border);
}

.btn-secondary:hover {
    background: var(--btn-secondary-hover);
    transform: translateY(-3px);
}

/* Brain Animation */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.brain-animation {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.brain-animation i {
    font-size: 7rem;
    color: var(--text-highlight);
    position: relative;
    z-index: 2;
    animation: float 3.5s ease-in-out infinite;
    filter: drop-shadow(0 0 30px rgba(251, 191, 36, .5));
}

.pulse-ring {
    position: absolute;
    border: 2px solid rgba(251, 191, 36, .3);
    border-radius: 50%;
    animation: pulse 2.5s ease-out infinite;
    width: 160px;
    height: 160px;
}

.pulse-ring.delay-1 {
    width: 220px;
    height: 220px;
    animation-delay: .7s;
}

.pulse-ring.delay-2 {
    width: 280px;
    height: 280px;
    animation-delay: 1.4s;
}

/* ── Section helpers ──────────────────────────────── */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    color: #fff;
    font-size: .8rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 5px 16px;
    border-radius: 100px;
    margin-bottom: .8rem;
}

section h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: -.5px;
    margin-bottom: .5rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-tertiary);
}

section {
    padding: 5rem 0;
}

.games-section {
    background: var(--bg-secondary);
}

.tools-section {
    background: var(--bg-primary);
}

.about-section {
    background: var(--bg-secondary);
}

/* ── Game Cards ───────────────────────────────────── */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 1.5rem;
}

.game-card {
    background: var(--bg-primary);
    padding: 1.8rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: .8rem;
}

.game-card-glow {
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    opacity: 0;
    z-index: 0;
    transition: opacity var(--transition);
}

.game-card>* {
    position: relative;
    z-index: 1;
}

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--grad-start);
}

.game-card:hover .game-card-glow {
    opacity: .08;
}

.game-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.6rem;
    box-shadow: var(--shadow-sm);
}

.game-card h3 {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-primary);
}

.game-card p {
    font-size: .9rem;
    color: var(--text-tertiary);
    flex: 1;
}

.game-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: .5rem;
}

.game-stats {
    display: flex;
    gap: 1rem;
    font-size: .8rem;
    color: var(--text-tertiary);
}

.game-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.difficulty.easy {
    color: #16a34a;
    font-weight: 700;
}

.difficulty.medium {
    color: #d97706;
    font-weight: 700;
}

.difficulty.hard {
    color: #dc2626;
    font-weight: 700;
}

.play-btn {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: .9rem;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.play-btn:hover {
    transform: scale(1.15);
    box-shadow: var(--shadow-md);
}

/* ── Tools ────────────────────────────────────────── */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    background: var(--bg-secondary);
    padding: 1.8rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition);
    border: 2px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .6rem;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--grad-start);
}

.tool-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: #1e1b4b;
    margin-bottom: .4rem;
}

.tool-card h3 {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-primary);
}

.tool-card p {
    font-size: .88rem;
    color: var(--text-tertiary);
    flex: 1;
}

.tool-btn {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    color: #fff;
    border: none;
    padding: .7rem 1.4rem;
    border-radius: 100px;
    cursor: pointer;
    font-weight: 700;
    font-size: .9rem;
    font-family: 'Nunito', sans-serif;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: .4rem;
    text-decoration: none;
}

.tool-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    opacity: .92;
}

/* ── About ────────────────────────────────────────── */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text h3 {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: .8rem;
    margin-top: 1.4rem;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text p {
    color: var(--text-tertiary);
    margin-bottom: 1.2rem;
    line-height: 1.7;
}

.about-text ul {
    list-style: none;
    padding: 0;
}

.about-text li {
    padding: .7rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: .95rem;
}

.about-text li:last-child {
    border-bottom: none;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.stat-card {
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--border-color);
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--text-accent);
    font-family: 'Space Mono', monospace;
}

.stat-label {
    color: var(--text-tertiary);
    font-size: .85rem;
    margin-top: 4px;
}

/* ── NeuroGame info section ───────────────────────── */
.neurogame-section {
    padding: 3rem 0 5rem;
}

.neurogame-row {
    display: flex;
    align-items: center;
    gap: 3rem;
    margin-bottom: 4rem;
}

.reverse {
    flex-direction: row-reverse;
}

.neurogame-image-left,
.neurogame-image-right {
    flex: 1;
    min-width: 260px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.neurogame-image-left img,
.neurogame-image-right img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform .5s ease;
}

.neurogame-image-left:hover img,
.neurogame-image-right:hover img {
    transform: scale(1.04);
}

.neurogame-text-right,
.neurogame-text-left {
    flex: 1;
}

.neurogame-text-right h2,
.neurogame-text-left h3 {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.neurogame-text-right p {
    margin-bottom: 1rem;
    color: var(--text-tertiary);
    line-height: 1.7;
}

.neurogame-list {
    list-style: none;
    padding: 0;
}

.neurogame-list li {
    padding: .65rem 0 .65rem 1.8rem;
    position: relative;
    color: var(--text-primary);
    font-size: 1rem;
    border-bottom: 1px dashed var(--border-color);
}

.neurogame-list li:last-child {
    border-bottom: none;
}

.neurogame-list li::before {
    content: '›';
    position: absolute;
    left: 0;
    top: .65rem;
    color: var(--grad-start);
    font-size: 1.2rem;
    font-weight: 900;
}

/* ── Footer ───────────────────────────────────────── */
.footer {
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer .logo {
    color: var(--bg-primary);
}

.footer-section p {
    font-size: .9rem;
    margin-top: .4rem;
}

.footer-section h4 {
    color: var(--text-highlight);
    font-size: 1rem;
    font-weight: 800;
    margin-bottom: .8rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: .4rem;
}

.footer-section a {
    color: var(--bg-primary);
    text-decoration: none;
    transition: color var(--transition);
    font-size: .9rem;
}

.footer-section a:hover {
    color: var(--text-highlight);
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--bg-primary);
    font-size: .85rem;
    color: var(--bg-primary);
}

/* ── NeuroBot ─────────────────────────────────────── */
.chat-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 370px;
    height: 580px;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    display: none;
    flex-direction: column;
    overflow: hidden;
    z-index: 1000;
    animation: slideUp .3s ease-out;
    border: 2px solid var(--border-color);
}

.chat-header {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    color: #fff;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.bot-avatar {
    width: 42px;
    height: 42px;
    background: rgba(255, 255, 255, .2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.bot-info h3 {
    font-size: 1rem;
    font-weight: 800;
}

.status {
    font-size: .75rem;
    opacity: .85;
}

.status.online::before {
    content: '●';
    color: #4ade80;
    margin-right: 5px;
}

.chat-actions {
    margin-left: auto;
    display: flex;
    gap: 8px;
}

.minimize-btn,
.close-btn {
    background: rgba(255, 255, 255, .2);
    border: none;
    color: #fff;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .8rem;
    transition: background var(--transition);
}

.minimize-btn:hover,
.close-btn:hover {
    background: rgba(255, 255, 255, .35);
}

.chat-messages {
    flex: 1;
    padding: 16px;
    overflow-y: auto;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message {
    display: flex;
    gap: 10px;
    animation: fadeIn .3s ease-out;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .9rem;
    flex-shrink: 0;
}

.bot-message .message-avatar {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    color: #fff;
}

.user-message {
    flex-direction: row-reverse;
}

.user-message .message-avatar {
    background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    color: #1e1b4b;
}

.message-content {
    background: var(--bg-secondary);
    padding: 12px 14px;
    border-radius: 16px;
    border-bottom-left-radius: 4px;
    box-shadow: var(--shadow-sm);
    max-width: 260px;
    word-wrap: break-word;
    color: var(--text-primary);
    font-size: .9rem;
    line-height: 1.5;
}

.user-message .message-content {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    color: #fff;
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 4px;
}

.message-content ul {
    margin: 8px 0;
    padding-left: 16px;
}

.message-content li {
    margin-bottom: 4px;
}

.quick-actions {
    padding: 10px 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.quick-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 100px;
    cursor: pointer;
    font-size: .78rem;
    font-weight: 700;
    font-family: 'Nunito', sans-serif;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all var(--transition);
    flex: 1;
    justify-content: center;
}

.quick-btn:hover {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    color: #fff;
    border-color: transparent;
}

.chat-input {
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.input-container {
    display: flex;
    gap: 8px;
    align-items: center;
}

#neuroBotInput {
    flex: 1;
    padding: 10px 14px;
    border: 2px solid var(--border-color);
    border-radius: 100px;
    outline: none;
    font-size: .9rem;
    font-family: 'Nunito', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color var(--transition);
}

#neuroBotInput:focus {
    border-color: var(--grad-start);
}

.send-btn {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    border: none;
    border-radius: 50%;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition);
}

.send-btn:hover {
    transform: scale(1.1);
}

.neurobot-toggle {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 58px;
    height: 58px;
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition);
    z-index: 999;
}

.neurobot-toggle:hover {
    transform: scale(1.1);
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--accent-start);
    color: #1e1b4b;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .7rem;
    font-weight: 900;
}

/* ── Modais ───────────────────────────────────────── */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .6);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 1rem;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 780px;
    max-height: 88vh;
    overflow-y: auto;
    animation: modalSlide .3s ease-out;
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
}

.game-modal {
    max-width: 560px;
}

.kanban-modal {
    max-width: 980px;
}

.login-modal {
    max-width: 420px;
}

.diff-modal {
    max-width: 860px;
}

.modal-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    color: #fff;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    position: sticky;
    top: 0;
    z-index: 2;
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 800;
}

.close-modal {
    background: rgba(255, 255, 255, .2);
    border: none;
    color: #fff;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .9rem;
    transition: background var(--transition);
}

.close-modal:hover {
    background: rgba(255, 255, 255, .4);
}

.modal-body {
    padding: 24px;
}

/* ── Kanban (modal) ───────────────────────────────── */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    min-height: 360px;
}

.kanban-column {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 14px;
    border: 2px solid var(--border-color);
}

.kanban-column h4 {
    text-align: center;
    font-size: .95rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 2px dashed var(--border-color);
}

.kanban-tasks {
    min-height: 200px;
}

.task-input {
    display: flex;
    gap: 8px;
}

.task-input input {
    flex: 1;
    padding: 9px 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: .9rem;
    font-family: 'Nunito', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition);
}

.task-input input:focus {
    border-color: var(--grad-start);
}

.task-input button {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    border: none;
    color: #fff;
    padding: 9px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 700;
    font-family: 'Nunito', sans-serif;
    white-space: nowrap;
}

.kanban-task {
    background: var(--bg-primary);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    box-shadow: var(--shadow-sm);
    cursor: grab;
    transition: all var(--transition);
    color: var(--text-primary);
    font-size: .9rem;
    border-left: 3px solid var(--grad-start);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.kanban-task:active {
    cursor: grabbing;
}

.kanban-task:hover {
    transform: translateX(3px);
    box-shadow: var(--shadow-md);
}

.kanban-task-del {
    background: #fee2e2;
    color: #dc2626;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: .7rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background var(--transition);
}

.kanban-task-del:hover {
    background: #dc2626;
    color: #fff;
}

/* ── Tips ─────────────────────────────────────────── */
.tips-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 16px;
}

.tip-card {
    background: var(--bg-secondary);
    padding: 16px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--grad-start);
}

.tip-card h4 {
    font-size: 1rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.tip-card ul {
    list-style: none;
    padding: 0;
}

.tip-card li {
    padding: 6px 0 6px 20px;
    color: var(--text-tertiary);
    font-size: .88rem;
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

.tip-card li:last-child {
    border-bottom: none;
}

.tip-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--grad-start);
    font-weight: 900;
}

/* ── Progress ─────────────────────────────────────── */
.progress-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 14px;
    margin-bottom: 1.5rem;
}

.progress-card {
    background: var(--bg-secondary);
    padding: 16px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 12px;
    border: 2px solid var(--border-color);
}

.progress-icon {
    width: 46px;
    height: 46px;
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
}

.progress-info h4 {
    font-size: .85rem;
    color: var(--text-tertiary);
}

.progress-number {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--text-accent);
    font-family: 'Space Mono', monospace;
    line-height: 1;
}

.achievements h4 {
    font-size: 1rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.achievement-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.achievement {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: .9rem;
    border: 2px solid var(--border-color);
}

.achievement.unlocked {
    background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    color: #1e1b4b;
    border-color: transparent;
}

.achievement.locked {
    opacity: .5;
}

.achievement i {
    font-size: 1.2rem;
}

/* ── Login ────────────────────────────────────────── */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 10px;
}

.form-group label {
    font-size: .85rem;
    font-weight: 700;
    color: var(--text-primary);
}

.form-group input {
    padding: 10px 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: .95rem;
    font-family: 'Nunito', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition);
}

.form-group input:focus {
    border-color: var(--grad-start);
}

.auth-submit-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #ec4899, #f472b6);
    border: none;
    color: #fff;
    font-weight: 800;
    font-size: 1rem;
    font-family: 'Nunito', sans-serif;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    margin-top: 6px;
}

.auth-submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.auth-submit-btn:disabled {
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    cursor: not-allowed;
}

.auth-message {
    font-size: .85rem;
    font-weight: 700;
    min-height: 20px;
    text-align: center;
}

.toggle-auth-mode {
    text-align: center;
    font-size: .88rem;
    color: var(--text-tertiary);
}

.toggle-auth-mode a {
    color: var(--text-accent);
    font-weight: 700;
    text-decoration: none;
}

.toggle-auth-mode a:hover {
    text-decoration: underline;
}

.login-hint {
    margin-top: 12px;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: .8rem;
    color: var(--text-tertiary);
}

.login-hint code {
    display: block;
    font-family: 'Space Mono', monospace;
    font-size: .78rem;
    margin-top: 4px;
    color: var(--text-accent);
}

/* ── Mood ─────────────────────────────────────────── */
.mood-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.mood-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 1.6rem;
    transition: all var(--transition);
    flex: 1;
    min-width: 60px;
    font-family: 'Nunito', sans-serif;
}

.mood-btn span {
    font-size: .72rem;
    font-weight: 700;
    color: var(--text-tertiary);
}

.mood-btn:hover {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.mood-btn:hover span {
    color: #fff;
}

.mood-history-list {
    list-style: none;
    padding: 0;
}

.mood-history-list li {
    padding: 8px 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: 6px;
    font-size: .9rem;
    color: var(--text-primary);
    border-left: 3px solid var(--grad-start);
}

/* ── Notas ────────────────────────────────────────── */
.notes-input-area {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.notes-input-area textarea {
    width: 100%;
    height: 90px;
    padding: 10px 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: .9rem;
    font-family: 'Nunito', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    resize: vertical;
    outline: none;
    transition: border-color var(--transition);
}

.notes-input-area textarea:focus {
    border-color: var(--grad-start);
}

.notes-list {
    list-style: none;
    padding: 0;
    margin-top: .5rem;
}

.notes-list li {
    padding: 10px 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    font-size: .9rem;
    color: var(--text-primary);
    border-left: 3px solid var(--accent-start);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
}

.note-del-btn {
    background: #fee2e2;
    color: #dc2626;
    border: none;
    border-radius: 4px;
    padding: 2px 7px;
    font-size: .75rem;
    cursor: pointer;
    flex-shrink: 0;
    transition: background var(--transition);
}

.note-del-btn:hover {
    background: #dc2626;
    color: #fff;
}

/* ════════════════════════════════════════════════════
   JOGOS
   ════════════════════════════════════════════════════ */

/* ── Resultado genérico ───────────────────────────── */
.game-result {
    font-weight: 800;
    text-align: center;
    padding: 10px;
    border-radius: var(--radius-sm);
    min-height: 36px;
    font-size: .95rem;
}

/* ── Animações compartilhadas ─────────────────────── */
@keyframes foundPop {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.25);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes wrongShake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-4px);
    }

    75% {
        transform: translateX(4px);
    }
}

/* ── Jogo: Cores ──────────────────────────────────── */
.color-game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.color-game-score-bar {
    display: flex;
    gap: 2rem;
    font-size: .95rem;
    color: var(--text-tertiary);
}

.color-game-target {
    width: 100%;
    padding: 1.4rem;
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    border-radius: var(--radius-md);
    text-align: center;
}

#targetColorText {
    font-size: 1.6rem;
    font-weight: 900;
    color: #fff;
    letter-spacing: 1px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, .3);
}

.color-game-feedback {
    font-size: 1.2rem;
    font-weight: 800;
    min-height: 28px;
    text-align: center;
}

.color-buttons-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    width: 100%;
}

.color-game-btn {
    padding: .9rem .5rem;
    border: 3px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 800;
    font-family: 'Nunito', sans-serif;
    font-size: .95rem;
    color: #fff;
    transition: all var(--transition);
    text-shadow: 0 1px 3px rgba(0, 0, 0, .4);
}

.color-game-btn:hover {
    transform: translateY(-3px) scale(1.04);
    box-shadow: var(--shadow-md);
    border-color: #fff;
}

/* ── Jogo: Organizar a Rotina ─────────────────────── */
.organize-timer-bar {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-accent);
    margin-bottom: 1rem;
    font-family: 'Space Mono', monospace;
}

.task-list-drag {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 1.2rem;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 2px dashed var(--border-color);
    min-height: 60px;
}

.drag-task-btn {
    padding: 7px 14px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 100px;
    cursor: grab;
    font-size: .88rem;
    font-weight: 700;
    font-family: 'Nunito', sans-serif;
    color: var(--text-primary);
    transition: all var(--transition);
}

.drag-task-btn:hover {
    background: var(--grad-start);
    color: #fff;
    border-color: transparent;
}

.priority-section {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.drop-zone {
    flex: 1;
    min-width: 140px;
    min-height: 100px;
    padding: 10px;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    transition: all var(--transition);
}

.drop-zone.drag-over {
    border-color: var(--grad-start);
    background: var(--bg-tertiary);
}

.drop-zone h4 {
    font-size: .88rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.drop-zone ul {
    list-style: none;
    padding: 0;
}

.drop-zone ul li {
    padding: 6px 10px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    margin-bottom: 5px;
    font-size: .85rem;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    border-left: 3px solid var(--grad-start);
}

/* ── Jogo: Verdadeiro ou Falso ────────────────────── */
.tf-game-container {
    display: flex;
    flex-direction: column;
    gap: .8rem;
}

/* Barra de timer */
.tf-timer-wrap {
    position: relative;
    height: 8px;
    background: var(--border-color);
    border-radius: 99px;
    overflow: hidden;
    display: none;
}

.tf-timer-fill {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, var(--grad-start), var(--grad-end));
    border-radius: inherit;
}

.tf-timer-count {
    position: absolute;
    right: 0;
    top: -20px;
    font-size: .72rem;
    font-weight: 700;
    font-family: 'Space Mono', monospace;
    color: var(--text-accent);
}

/* Bolinhas de progresso */
.tf-progress {
    display: flex;
    justify-content: center;
    gap: 6px;
    flex-wrap: wrap;
    min-height: 14px;
}

.tf-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    transition: background 0.2s ease, transform 0.2s ease;
    display: inline-block;
}

.tf-dot.dot-active {
    background: var(--grad-start);
    transform: scale(1.3);
}

.tf-dot.dot-ok {
    background: #16a34a;
}

.tf-dot.dot-err {
    background: #dc2626;
}

/* Pergunta */
.tf-question-card {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    border-radius: var(--radius-md);
    padding: 1.4rem 1.2rem;
    text-align: center;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tf-question-card p {
    color: #fff;
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.5;
    margin: 0;
}

/* Botões */
.tf-buttons {
    display: flex;
    gap: 10px;
}

.tf-btn {
    flex: 1;
    padding: .9rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 800;
    font-family: 'Nunito', sans-serif;
    cursor: pointer;
    transition: all var(--transition);
}

.true-btn {
    background: #dcfce7;
    color: #16a34a;
    border: 2px solid #bbf7d0;
}

.false-btn {
    background: #fee2e2;
    color: #dc2626;
    border: 2px solid #fecaca;
}

.true-btn:hover {
    background: #16a34a;
    color: #fff;
    transform: translateY(-2px);
}

.false-btn:hover {
    background: #dc2626;
    color: #fff;
    transform: translateY(-2px);
}

/* Feedback e placar */
.tf-feedback {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: .88rem;
    font-weight: 700;
    min-height: 42px;
    text-align: center;
    line-height: 1.5;
}

.tf-score {
    font-size: .82rem;
    color: var(--text-tertiary);
    text-align: center;
    font-weight: 700;
    min-height: 18px;
}

/* ── Jogo da Memória — Flip 3D ─────────────────── */
.memory-pairs-stats {
    display: flex;
    gap: 1.5rem;
    font-size: .9rem;
    color: var(--text-tertiary);
    margin-bottom: 1rem;
    justify-content: center;
    font-weight: 700;
}

.memory-pairs-stats strong {
    color: var(--text-accent);
}

.memory-pairs-board {
    display: grid;
    gap: 8px;
    margin-bottom: 1rem;
    /* grid-template-columns definido via JS por nível */
}

.memory-tile {
    aspect-ratio: 1;
    cursor: pointer;
    perspective: 600px;
    border-radius: var(--radius-md);
}

.tile-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.45s ease;
    border-radius: inherit;
}

.memory-tile.flipped .tile-inner,
.memory-tile.matched .tile-inner {
    transform: rotateY(180deg);
}

.tile-front,
.tile-back {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.tile-front {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
}

.tile-front::after {
    content: '?';
    color: rgba(255, 255, 255, 0.5);
    font-size: 1.4rem;
    font-weight: 900;
}

.tile-back {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    transform: rotateY(180deg);
    font-size: 1.6rem;
}

.memory-tile.matched .tile-back {
    background: linear-gradient(135deg, #16a34a, #22c55e);
    border-color: transparent;
}

.memory-tile:not(.flipped):not(.matched):hover .tile-inner {
    transform: rotateY(15deg) scale(1.05);
}

/* ── Caça-Palavras ────────────────────────────────── */
.ws-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    font-size: .88rem;
    color: var(--text-tertiary);
    margin-bottom: .6rem;
}

.ws-stats strong {
    color: var(--text-accent);
    font-family: 'Space Mono', monospace;
}

.word-grid {
    display: grid;
    gap: 4px;
    margin-bottom: .8rem;
    user-select: none;
}

.word-cell {
    aspect-ratio: 1;
    background: var(--bg-secondary);
    border: 1.5px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-family: 'Space Mono', monospace;
    font-size: .85rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background 0.1s, border-color 0.1s, transform 0.1s;
    color: var(--text-primary);
}

.word-cell:hover {
    background: var(--bg-tertiary);
    border-color: var(--grad-start);
}

.word-cell.selected {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    color: #fff;
    border-color: transparent;
    transform: scale(1.08);
}

.word-cell.correct {
    background: linear-gradient(135deg, #16a34a, #22c55e);
    color: #fff;
    border-color: transparent;
    animation: foundPop 0.3s ease;
}

.word-cell.wrong-flash {
    background: #fee2e2;
    border-color: #dc2626;
    animation: wrongShake 0.35s ease;
}

/* ── Encontre as Diferenças ──────────────────────── */
.diff-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: .8rem;
}

.diff-stats {
    display: flex;
    gap: 1.2rem;
    font-size: .9rem;
    color: var(--text-tertiary);
}

.diff-stats strong {
    color: var(--text-accent);
    font-family: 'Space Mono', monospace;
}

.diff-boards-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.diff-panel {
    display: flex;
    flex-direction: column;
    gap: .4rem;
}

.diff-panel-label {
    text-align: center;
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .1em;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.diff-board {
    display: grid;
    gap: 4px;
}

.diff-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    transition: transform 0.15s, border-color 0.15s, background 0.15s;
    user-select: none;
}

.diff-cell.diff-b {
    cursor: pointer;
}

.diff-cell.diff-b:hover {
    border-color: var(--grad-start);
    transform: scale(1.08);
}

.diff-cell.diff-b.found {
    background: linear-gradient(135deg, #16a34a, #22c55e);
    border-color: transparent;
    animation: foundPop 0.35s ease;
}

.diff-cell.diff-a.found-a {
    border-color: #16a34a;
    box-shadow: 0 0 0 2px rgba(22, 163, 74, 0.3);
}

.diff-cell.diff-b.missed {
    background: linear-gradient(135deg, #dc2626, #ef4444);
    border-color: transparent;
    opacity: .75;
}

.diff-cell.diff-b.wrong-click {
    background: #fee2e2;
    border-color: #dc2626;
    animation: wrongShake 0.35s ease;
}

/* ── Sequência Lógica ─────────────────────────────── */
.sequence-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.sequence-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sequence-level {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    color: #fff;
    padding: 4px 14px;
    border-radius: 100px;
    font-size: .85rem;
    font-weight: 800;
}

.sequence-score {
    font-size: .9rem;
    font-weight: 700;
    color: var(--text-accent);
    font-family: 'Space Mono', monospace;
}

.sequence-label {
    font-size: .9rem;
    color: var(--text-tertiary);
    font-weight: 700;
    text-align: center;
}

.sequence-display {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.2rem;
    text-align: center;
    font-family: 'Space Mono', monospace;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 3px;
}

.sequence-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.sequence-opt-btn {
    padding: .7rem 1.4rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: 'Space Mono', monospace;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    color: var(--text-primary);
    transition: all var(--transition);
    min-width: 70px;
}

.sequence-opt-btn:hover {
    background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
    color: #fff;
    border-color: transparent;
    transform: translateY(-2px);
}

.sequence-opt-btn.correct {
    background: #16a34a;
    color: #fff;
    border-color: transparent;
}

.sequence-opt-btn.wrong {
    background: #dc2626;
    color: #fff;
    border-color: transparent;
}

.sequence-feedback {
    font-size: 1rem;
    font-weight: 800;
    text-align: center;
    min-height: 28px;
    padding: 6px;
    border-radius: var(--radius-sm);
}

.sequence-feedback.correct {
    background: #dcfce7;
    color: #16a34a;
}

.sequence-feedback.wrong {
    background: #fee2e2;
    color: #dc2626;
}

/* ════════════════════════════════════════════════════
   ANIMAÇÕES GLOBAIS
   ════════════════════════════════════════════════════ */
@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-18px);
    }
}

@keyframes pulse {
    0% {
        transform: scale(.7);
        opacity: .8;
    }

    100% {
        transform: scale(1.3);
        opacity: 0;
    }
}

@keyframes glow {
    from {
        text-shadow: 0 0 8px rgba(251, 191, 36, .4);
    }

    to {
        text-shadow: 0 0 24px rgba(251, 191, 36, .7);
    }
}

@keyframes slideUp {
    from {
        transform: translateY(40px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes modalSlide {
    from {
        transform: scale(.92);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(110%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(110%);
        opacity: 0;
    }
}

/* ── Scrollbar ────────────────────────────────────── */
.chat-messages::-webkit-scrollbar,
.modal-content::-webkit-scrollbar {
    width: 5px;
}

.chat-messages::-webkit-scrollbar-track,
.modal-content::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb,
.modal-content::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
}

/* ════════════════════════════════════════════════════
   RESPONSIVIDADE
   ════════════════════════════════════════════════════ */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
        padding: 1rem 1.5rem;
        gap: .8rem;
        box-shadow: var(--shadow-md);
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .brain-animation i {
        font-size: 5rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .kanban-board {
        grid-template-columns: 1fr;
    }

    .neurogame-row,
    .reverse {
        flex-direction: column;
        gap: 1.5rem;
    }

    .diff-boards-wrapper {
        grid-template-columns: 1fr;
    }

    .chat-container {
        width: calc(100vw - 20px);
        height: calc(100vh - 40px);
        bottom: 10px;
        right: 10px;
        left: 10px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .games-grid,
    .tools-grid {
        grid-template-columns: 1fr;
    }

    .color-buttons-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .priority-section {
        flex-direction: column;
    }
}

/* ════════════════════════════════════════════════════
   MELHORIAS v2 — Login, Scroll Spy, Progresso
   ════════════════════════════════════════════════════ */

/* ── Nav: greeting do usuário logado ─────────────── */
.nav-user {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--text-highlight);
    color: #1e1b4b;
    font-weight: 900;
    font-size: .85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, .3);
}

#navUserName {
    font-weight: 800;
    color: #fff;
    font-size: .92rem;
}

.nav-logout-btn {
    background: rgba(255, 255, 255, .15);
    border: none;
    color: rgba(255, 255, 255, .85);
    width: 26px;
    height: 26px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .75rem;
    transition: background var(--transition), color var(--transition);
}

.nav-logout-btn:hover {
    background: rgba(220, 38, 38, .7);
    color: #fff;
}

/* ── Scroll Spy — link ativo no menu ─────────────── */
.nav-menu a.nav-spy-active {
    color: var(--text-highlight) !important;
    font-weight: 900 !important;
    position: relative;
}

.nav-menu a.nav-spy-active::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--text-highlight);
    border-radius: 2px;
    animation: fadeIn .2s ease-out;
}

/* ── Progresso: 4 cards em grid ──────────────────── */
.progress-stats {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.progress-card .progress-icon i.fa-fire {
    /* ícone de foco em laranja */
}

.progress-card:has(.fa-fire) .progress-icon {
    background: linear-gradient(135deg, #f59e0b, #ef4444);
}