/*
 * Copyright (c) 2026 Ivan Vilchavskyi. All rights reserved.
 * Licensed under CC BY-NC-ND 4.0 — https://creativecommons.org/licenses/by-nc-nd/4.0/
 */
:root {
    --bg-color: #0d0d0d;
    --surface-color: #1a1a1a;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent: #5e5e5e;
    --border: #2a2a2a;
    --success: #4caf50;
    --font-serif: "Crimson Pro", serif;
    --font-sans: "Inter", sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
}

.logo {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 200;
    letter-spacing: 0.2rem;
    text-transform: uppercase;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    letter-spacing: 0.1rem;
}

main {
    flex-grow: 1;
}

.view {
    display: none;
    animation: fadeIn 0.5s ease-out;
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

/* Episode Selection */
#episode-selection h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    margin-bottom: 2rem;
    font-weight: 300;
    text-align: center;
}

/* Season Styles */
.season-container {
    margin-bottom: 2rem;
}

.season-header {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    padding: 1rem 0;
    cursor: pointer;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
}

.season-header:hover {
    color: white;
}

.season-header::after {
    content: '+';
    font-family: var(--font-sans);
    font-weight: 300;
    font-size: 1.5rem;
}

.season-header.active::after {
    content: '-';
}

.season-content {
    display: none;
    padding: 1.5rem 0;
}

.season-content.active {
    display: grid;
    /* restored grid */
}

/* Season 2 Specifics */
.season-2-placeholder {
    padding: 2rem;
    text-align: center;
    border: 1px dashed var(--border);
    color: var(--text-secondary);
}

.btn-notify {
    background-color: var(--surface-color);
    border: 1px solid var(--text-secondary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    margin-top: 1rem;
    cursor: pointer;
    font-family: var(--font-sans);
    transition: var(--transition);
}

.btn-notify:hover {
    background-color: var(--text-secondary);
    color: var(--bg-color);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.card {
    background-color: var(--surface-color);
    border: 1px solid var(--border);
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.card:hover {
    border-color: var(--text-secondary);
    background-color: #222;
}

.card h3 {
    font-family: var(--font-serif);
    margin-bottom: 0.5rem;
}

.card.loading {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

/* Game Board - Split View */
#game-board {
    display: none;
    flex-direction: column;
    min-height: 100vh;
}

#game-board.active {
    display: flex;
}

.board-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.game-layout {
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 2rem;
}

.riddle-pane {
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.chat-pane {
    width: 100%;
    display: flex;
    flex-direction: column;
    background-color: transparent;
    border: none;
}

.btn-text {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.9rem;
}

.btn-text:hover {
    color: var(--text-primary);
}

.riddle-description-box {
    background-color: var(--surface-color);
    padding: 2.5rem;
    border-left: 4px solid var(--accent);
    margin-bottom: 2.5rem;
}

#riddle-text {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-style: italic;
    color: var(--text-primary);
}

.card.locked {
    opacity: 0.7;
    cursor: not-allowed;
    background-color: #2a2a2a;
    border-color: #444;
}

.card.locked:hover {
    transform: none;
    box-shadow: none;
    border-color: #444;
}

.btn-return {
    display: block;
    width: 100%;
    margin-top: 20px;
    padding: 12px;
    background-color: var(--success);
    color: var(--bg-color);
    border: none;
    font-family: var(--font-sans);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-return:hover {
    background-color: #27ae60;
    transform: translateY(-2px);
}

/* Response History */
.qa-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    /* Prevent double scrollbars */
}

.history {
    flex-grow: 1;
    padding: 1rem 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    height: auto;
    margin-bottom: 100px; /* Space for fixed controls */
}

.controls {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 800px;
    padding: 1.5rem 1rem;
    background-color: var(--bg-color);
    border-top: 1px solid var(--border);
    z-index: 100;
    box-shadow: 0 -10px 20px rgba(0,0,0,0.5);
}

.message {
    padding: 0.75rem 1rem;
    max-width: 85%;
    font-size: 0.95rem;
}

.message.user {
    align-self: flex-end;
    background-color: var(--border);
    color: var(--text-primary);
    border-radius: 8px 8px 0 8px;
}

.message.ai {
    align-self: flex-start;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: 8px 8px 8px 0;
}

.message.system {
    align-self: center;
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    border: none;
}

.message.hint {
    align-self: flex-start;
    border-left: 3px solid #c9a84c;
    background: rgba(201, 168, 76, 0.08);
    color: var(--text-secondary);
    border-radius: 8px 8px 8px 0;
    font-style: italic;
}

.hint-bar {
    padding: 0.5rem 1rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border);
    border-radius: 4px;
    margin-bottom: 0.75rem;
    cursor: pointer;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: var(--transition);
    user-select: none;
}

.hint-bar:hover:not(.disabled) {
    border-color: #c9a84c;
    background-color: rgba(201, 168, 76, 0.1);
    color: #c9a84c;
}

.hint-bar.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.controls form {
    display: flex;
    gap: 0.5rem;
}

input[type="text"],
input[type="email"],
input[type="password"] {
    flex-grow: 1;
    background-color: var(--surface-color);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    font-family: var(--font-sans);
    font-size: 16px; /* Prevents iOS Safari zoom on focus */
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--text-secondary);
}

button[type="submit"] {
    background-color: var(--text-primary);
    color: var(--bg-color);
    border: none;
    padding: 0 1.5rem;
    cursor: pointer;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
    transition: var(--transition);
}

button[type="submit"]:hover {
    background-color: white;
}

footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.message.solved {
    align-self: center;
    background-color: #2e7d32;
    color: white;
    text-align: center;
    border-radius: 4px;
    font-weight: 600;
    margin: 1rem 0;
    max-width: 100%;
}

.typing-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--text-secondary);
    border-radius: 50%;
    margin-right: 3px;
    animation: typing 1s infinite alternate;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    from {
        opacity: 0.3;
        transform: translateY(0);
    }

    to {
        opacity: 1;
        transform: translateY(-4px);
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.license {
    font-size: 0.7rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.4;
}

.license a {
    color: #888;
    text-decoration: underline;
}

.license a:hover {
    color: var(--text-primary);
}

/* Header with auth */
.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo-section {
    text-align: left;
}

.auth-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#user-email {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.btn-primary {
    background-color: var(--text-primary);
    color: var(--bg-color);
    border: none;
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-weight: 600;
    font-family: var(--font-sans);
    transition: var(--transition);
}

.btn-primary:hover {
    background-color: white;
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Auth Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
}

.modal-content {
    position: relative;
    background-color: var(--surface-color);
    border: 1px solid var(--border);
    padding: 2rem;
    width: 100%;
    max-width: 400px;
    animation: fadeIn 0.3s ease-out;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

#auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1.5rem 0;
}

#auth-form input {
    background-color: var(--bg-color);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    font-family: var(--font-sans);
}

#auth-form input:focus {
    outline: none;
    border-color: var(--text-secondary);
}

#auth-toggle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

#auth-toggle a {
    color: var(--text-primary);
    text-decoration: none;
    margin-left: 0.25rem;
}

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

#auth-error {
    color: #ef5350;
    text-align: center;
    font-size: 0.9rem;
    margin-top: 1rem;
}

#auth-success {
    color: #4caf50;
    text-align: center;
    font-size: 0.9rem;
    margin-top: 1rem;
}

/* Episode card states */
.card.completed {
    border-color: #4caf50;
}

.card.completed::after {
    content: '✓';
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    color: #4caf50;
    font-size: 1.2rem;
}

.card {
    position: relative;
}

.card.auth-required::before {
    content: '🔒';
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    font-size: 1rem;
}

.card.in-progress {
    border-color: #ff9800;
}

.card.in-progress::after {
    content: '⏳';
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    font-size: 1rem;
}

/* ─── Leaderboard ──────────────────────────────────────────────────── */
#leaderboard-view {
    animation: fadeIn 0.3s ease-out;
}

.leaderboard-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.lb-tab {
    flex: 1;
    padding: 0.75rem 1rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: var(--transition);
}

.lb-tab:hover {
    color: var(--text-primary);
}

.lb-tab.active {
    color: var(--text-primary);
    border-bottom-color: var(--text-primary);
}

.lb-content {
    display: none;
}

.lb-content.active {
    display: block;
}

.lb-note {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-style: italic;
    margin-bottom: 1.5rem;
    text-align: center;
}

.lb-episode-select {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.lb-episode-select label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    white-space: nowrap;
}

.lb-episode-select select {
    flex: 1;
    background-color: var(--surface-color);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    font-family: var(--font-sans);
    font-size: 0.9rem;
}

.lb-episode-select select:focus {
    outline: none;
    border-color: var(--text-secondary);
}

.lb-table {
    width: 100%;
    border-collapse: collapse;
}

.lb-table th {
    text-align: left;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
}

.lb-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}

.lb-table tbody tr:hover {
    background-color: var(--surface-color);
}

.lb-rank {
    width: 60px;
    text-align: center;
}

.lb-score {
    text-align: right;
    color: var(--text-secondary);
}

.lb-medal {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.85rem;
}

.lb-gold {
    background-color: #c9a227;
    color: #1a1a1a;
}

.lb-silver {
    background-color: #8a8a8a;
    color: #1a1a1a;
}

.lb-bronze {
    background-color: #8b5e3c;
    color: #e0e0e0;
}

.lb-current-user {
    background-color: rgba(94, 94, 94, 0.2);
}

.lb-current-user td {
    font-weight: 600;
    color: var(--text-primary);
}

.lb-empty,
.lb-loading {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    padding: 2rem 0;
}

/* ─── Profile Modal ────────────────────────────────────────────────── */
#profile-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#profile-form input {
    background-color: var(--bg-color);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    font-family: var(--font-sans);
    font-size: 16px;
}

#profile-form input:focus {
    outline: none;
    border-color: var(--text-secondary);
}

#profile-error {
    color: #ef5350;
    text-align: center;
    font-size: 0.9rem;
}

/* Diamond display in header */
.diamond-display {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--accent, #c9a84c);
    font-weight: 600;
    font-size: 0.95rem;
    font-family: var(--font-sans);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.diamond-icon {
    font-size: 1.1rem;
    line-height: 1;
}

/* Diamond modals */
.diamond-modal {
    text-align: center;
}

.diamond-modal h2 {
    margin-bottom: 1rem;
}

.diamond-modal-balance {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.diamond-modal-message {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-size: 0.9rem;
}

.diamond-modal-message a {
    color: var(--accent-color);
    text-decoration: underline;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.modal-actions button {
    min-width: 100px;
    padding: 0.6rem 1.25rem;
}

.btn-cancel {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-sans);
    font-weight: 500;
    transition: var(--transition);
}

.btn-cancel:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

/* Responsive */
@media (max-width: 600px) {
    .header-top {
        flex-direction: column;
        text-align: center;
    }

    .logo-section {
        text-align: center;
    }

    .modal-content {
        margin: 1rem;
        padding: 1.5rem;
    }

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

    .lb-table th,
    .lb-table td {
        padding: 0.5rem;
        font-size: 0.85rem;
    }

    .lb-medal {
        width: 24px;
        height: 24px;
        font-size: 0.75rem;
    }

    .lb-episode-select {
        flex-direction: column;
        align-items: stretch;
    }
}