/* BASE / RESET */
body {
    margin: 0;
    background: var(--bg, #090909);
    color: var(--text, #f6f4ef);
    font-family: 'Courier New', monospace;
}

/* THEMES */
[data-theme="dark"] {
    --Zbg:      #090909;
    --text:    #f6f4ef;
    --muted:   #c9c2b7;
    --card-bg: rgba(90, 133, 183, 0.104);
    --accent:  #1585c2;
}

[data-theme="light"] {
    --bg:      #f0f0f0;
    --text:    #111111;
    --muted:   #555555;
    --card-bg: rgba(0, 0, 0, 0.06);
    --accent:  #1585c2;
}

[data-theme="amoled"] {
    --bg:      #000000;
    --text:    #ffffff;
    --muted:   #aaaaaa;
    --card-bg: rgba(255, 255, 255, 0.04);
    --accent:  #00cfff;
}

[data-theme="forest"] {
    --bg:      #0e1a0e;
    --text:    #d4edda;
    --muted:   #90b898;
    --card-bg: rgba(50, 120, 50, 0.12);
    --accent:  #4caf50;
}

[data-theme="sunset"] {
    --bg:      #1a0a00;
    --text:    #ffe4c4;
    --muted:   #cc9966;
    --card-bg: rgba(200, 80, 0, 0.1);
    --accent:  #ff6b35;
}

[data-theme="cyberpunk"] {
    --bg:      #0d0015;
    --text:    #ff99cc;
    --muted:   #aa5588;
    --card-bg: rgba(180, 0, 120, 0.1);
    --accent:  #ff00aa;
}

[data-theme="neon"] {
    --bg:      #0a0a0a;
    --text:    #e0ffff;
    --muted:   #5599aa;
    --card-bg: rgba(0, 200, 255, 0.07);
    --accent:  #00cfff;
}

[data-theme="retro"] {
    --bg:      #0b0c1a;
    --text:    #ffd700;
    --muted:   #aa9944;
    --card-bg: rgba(255, 200, 0, 0.07);
    --accent:  #ffd700;
}

[data-theme="synthwave"] {
    --bg:      #1a0533;
    --text:    #f8c8ff;
    --muted:   #aa77bb;
    --card-bg: rgba(140, 0, 255, 0.1);
    --accent:  #cc44ff;
}

[data-theme="military"] {
    --bg:      #0a0f00;
    --text:    #c8d89a;
    --muted:   #778855;
    --card-bg: rgba(60, 80, 0, 0.15);
    --accent:  #aacc00;
}

/* NAVIGATION */
nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    padding: 18px 20px 8px;
    margin: 0 auto;
    max-width: 1000px;
}

.nav-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 18px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text, #f6f4ef);
    text-decoration: none;
    font-family: 'Courier New', monospace;
    transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.nav-button:hover,
.nav-button:focus,
.nav-button.active {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--accent, #1585c2);
}

/* HEADER */
header {
    text-align: center;
    padding: 24px 20px 10px;
}

h1 {
    margin: 0 0 10px;
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: 0.04em;
}

.title {
    font-family: 'Courier New', monospace;
    color: var(--text, #f6f4ef);
    letter-spacing: 0.04em;
    text-align: center;
}

header p {
    margin: 0 auto;
    max-width: 860px;
    color: var(--muted, #c9c2b7);
    line-height: 1.75;
}

.header-wrapper {
    max-width: 950px;
    margin: 0 auto 40px;
    padding: 20px;
    border-radius: 18px;
    background-color: var(--card-bg, rgba(90, 133, 183, 0.104));
    backdrop-filter: blur(10px);
}

/* SEARCH BAR */
.search-wrapper {
    display: flex;
    justify-content: center;
    margin: 16px auto 4px;
}

#searchBar {
    width: 100%;
    max-width: 420px;
    padding: 10px 18px;
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 999px;
    color: var(--text, #f6f4ef);
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}

#searchBar::placeholder {
    color: #555;
}

#searchBar:focus {
    border-color: var(--accent, #1585c2);
}

/* Games loaded text */
.games-loaded {
    margin: 20px auto 20px;
    max-width: 420px;
    color: var(--muted, #c9c2b7);
    font-size: 0.95rem;
    text-align: center;
    letter-spacing: 0.02em;
    opacity: 0.88;
}

/* ============================================================
   PAGE SECTIONS (show / hide)
   ============================================================ */
.page-section {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.page-section.active {
    display: block;
}

/* SETTINGS PANEL */
.settings-panel,
.partners-panel,
.header-wrapper,
.cards-wrapper {
    max-width: 900px;
    margin: 0 auto 40px;
    padding: 24px 20px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.settings-panel h2,
.partners-panel h2 {
    margin-top: 0;
    color: var(--text, #f6f4ef);
}

/* Settings groups */
.settings-group {
    margin: 22px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    padding-bottom: 18px;
}

.settings-label {
    display: block;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted, #c9c2b7);
    margin-bottom: 10px;
}

/* Theme buttons */
.theme-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.theme-btn {
    padding: 7px 16px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text, #f6f4ef);
    font-family: inherit;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

.theme-btn:hover,
.theme-btn.active {
    background: rgba(255, 255, 255, 0.14);
    border-color: var(--accent, #1585c2);
}

/* Toggle switch */
.toggle-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.toggle-opt {
    font-size: 0.9rem;
    color: var(--muted, #c9c2b7);
    transition: color 0.2s;
}

.toggle-opt.active {
    color: var(--text, #f6f4ef);
    font-weight: bold;
}

.toggle-switch {
    width: 48px;
    height: 26px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    position: relative;
    transition: background 0.25s;
}

.toggle-switch.on {
    background: var(--accent, #1585c2);
}

.toggle-knob {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    transition: left 0.25s;
}

.toggle-switch.on .toggle-knob {
    left: 25px;
}

/* Text inputs in settings */
.input-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.input-row input {
    flex: 1;
    min-width: 0;
    padding: 8px 14px;
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 999px;
    color: var(--text, #f6f4ef);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.input-row input:focus {
    border-color: var(--accent, #1585c2);
}

.apply-btn,
.reset-btn {
    padding: 8px 16px;
    border-radius: 999px;
    font-family: inherit;
    cursor: pointer;
    font-size: 0.85rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.apply-btn {
    background: var(--accent, #1585c2);
    color: #fff;
    border-color: transparent;
}

.reset-btn {
    background: transparent;
    color: var(--muted, #c9c2b7);
}

/* Font select */
#set-font {
    background: #1a1a1a;
    border: 1px solid #333;
    color: var(--text, #f6f4ef);
    padding: 8px 14px;
    border-radius: 10px;
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
}

/* Reset all button */
.reset-all-btn {
    margin-top: 10px;
    padding: 9px 22px;
    border-radius: 999px;
    border: 1px solid #555;
    background: transparent;
    color: #e07070;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.2s;
}

.reset-all-btn:hover {
    background: rgba(220, 80, 80, 0.12);
}

/* PARTNERS PANEL */
.partner-list {
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
}

.partner-list li {
    margin-bottom: 10px;
}

.partner-list a {
    color: var(--text, #f6f4ef);
    text-decoration: none;
    border-bottom: 1px dashed rgba(246, 244, 239, 0.4);
}

.partner-list a:hover {
    color: #90caff;
}

/* GAME CARDS GRID */
.cards-wrapper {
    max-width: 950px;
    margin: 0 auto 40px;
    padding: 20px;
    border-radius: 18px;
    background-color: var(--card-bg, rgba(90, 133, 183, 0.104));
    backdrop-filter: blur(10px);
}

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

/* Individual card */
.lesson-card {
    flex: 0 0 382px;
    min-width: 220px;
    max-width: 300px;
    aspect-ratio: 382 / 220;
    position: relative;
    overflow: hidden;
    border-radius: 18px;
    cursor: pointer;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.lesson-card:hover {
    box-shadow: 0 14px 30px rgba(21, 133, 194, 0.22);
}

.lesson-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.lesson-card:hover img {
    transform: scale(1.15);
}

/* Card hover overlay */
.card-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
    opacity: 0;
    transition: opacity 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
}

.lesson-card:hover .card-overlay {
    opacity: 1;
}

.lesson-title {
    margin: 0;
    color: white;
    font-size: 1.2rem;
    text-align: center;
}

/* FOOTER */
footer {
    text-align: center;
    padding: 20px;
    background: var(--bg, #090909);
    color: var(--muted, #c9c2b7);
    font-size: 0.9rem;
}

/* RESPONSIVE */

/* Tablet: 2 cards per row */
@media (max-width: 940px) {
    .lesson-card {
        flex: 1 1 calc(50% - 20px);
    }
}

/* Mobile: 1 card per row */
@media (max-width: 620px) {
    .lesson-card {
        flex: 1 1 100%;
    }
}

/* ANIMATIONS */
@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}