/* v2/css/themes.css - 교사 어드민용 테마 시스템 */
@import url("https://fonts.googleapis.com/css2?family=Gowun+Dodum&family=SUIT:wght@400;500;700;800&display=swap");

:root {
    --font-body: "SUIT", "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans KR", Arial, sans-serif;
    --font-heading: "Gowun Dodum", "SUIT", "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", Arial, sans-serif;
}

/* ===== Theme 1: Default Dark (Hub Style) ===== */
html[data-theme="default-dark"] {
    --bg: #0f172a;
    --bg-grad: radial-gradient(circle at top, #1e293b 0, #0f172a 100%);
    --bg-main: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.75);
    --border: rgba(255, 255, 255, 0.1);
    --accent: #10b981;
    --accent-soft: rgba(16, 185, 129, 0.15);
    --accent-dark: #059669;
    --text-main: #f1f5f9;
    --text-sub: #94a3b8;

    /* Team Hub & General */
    --primary: #818cf8;
    --primary-soft: rgba(129, 140, 248, 0.15);
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --input-bg: rgba(15, 23, 42, 0.6);
    --error: #f87171;
    --danger: #f87171;
    --danger-soft: rgba(248, 113, 113, 0.15);
    --missing: #34d399;
    --missing-soft: rgba(52, 211, 153, 0.15);
    --warning: #fbbf24;
    --warning-soft: rgba(251, 191, 36, 0.15);
    --success: #10b981;
    --success-soft: rgba(16, 185, 129, 0.15);
}

/* ===== Theme 2: Ocean Blue ===== */
html[data-theme="ocean-blue"] {
    --bg: #0c1929;
    --bg-grad: radial-gradient(circle at top, #1e3a5f 0, #0c1929 100%);
    --bg-main: #0c1929;
    --card-bg: rgba(15, 32, 54, 0.75);
    --border: rgba(56, 189, 248, 0.2);
    --accent: #38bdf8;
    --accent-soft: rgba(56, 189, 248, 0.15);
    --accent-dark: #0ea5e9;
    --text-main: #f0f9ff;
    --text-sub: #7dd3fc;

    /* Team Hub & General */
    --primary: #38bdf8;
    --primary-soft: rgba(56, 189, 248, 0.15);
    --glass-bg: rgba(15, 32, 54, 0.7);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --input-bg: rgba(12, 25, 41, 0.6);
    --error: #fb7185;
    --danger: #fb7185;
    --danger-soft: rgba(251, 113, 133, 0.15);
    --missing: #c084fc;
    --missing-soft: rgba(192, 132, 252, 0.15);
    --warning: #facc15;
    --warning-soft: rgba(250, 204, 21, 0.15);
    --success: #38bdf8;
    --success-soft: rgba(56, 189, 248, 0.15);
}

/* ===== Theme 3: Nordic Quiet ===== */
html[data-theme="nordic-quiet"] {
    --bg: #18181b;
    --bg-grad: radial-gradient(circle at top, #27272a 0, #18181b 100%);
    --bg-main: #18181b;
    --card-bg: rgba(39, 39, 42, 0.75);
    --border: rgba(161, 161, 170, 0.2);
    --accent: #d4d4d8;
    --accent-soft: rgba(161, 161, 170, 0.15);
    --accent-dark: #a1a1aa;
    --text-main: #f4f4f5;
    --text-sub: #a1a1aa;

    /* Team Hub & General */
    --primary: #a1a1aa;
    --primary-soft: rgba(161, 161, 170, 0.15);
    --glass-bg: rgba(39, 39, 42, 0.7);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    --input-bg: rgba(24, 24, 27, 0.6);
    --error: #f87171;
    --danger: #f87171;
    --danger-soft: rgba(248, 113, 113, 0.15);
    --missing: #818cf8;
    --missing-soft: rgba(129, 140, 248, 0.15);
    --warning: #eab308;
    --warning-soft: rgba(234, 179, 8, 0.15);
    --success: #a1a1aa;
    --success-soft: rgba(161, 161, 170, 0.15);
}

/* ===== Theme 4: Light Mode ===== */
html[data-theme="light-mode"] {
    --bg: #fffaf2;
    --bg-grad: radial-gradient(circle at 12% 0%, #ffe6b8 0, #fff7eb 28%, #f2fbff 72%, #eef6ff 100%);
    --bg-main: #fffaf2;
    --card-bg: rgba(255, 255, 255, 0.96);
    --border: rgba(125, 161, 195, 0.34);
    --accent: #f8b94d;
    --accent-soft: rgba(248, 185, 77, 0.18);
    --accent-dark: #ef8b1e;
    --text-main: #16324b;
    --text-sub: #5d7891;

    /* Team Hub & General */
    --primary: #2563eb;
    --primary-soft: rgba(37, 99, 235, 0.14);
    --glass-bg: rgba(255, 255, 255, 0.84);
    --glass-shadow: 0 18px 44px rgba(37, 99, 235, 0.08);
    --input-bg: rgba(255, 255, 255, 0.9);
    --error: #ef4444;
    --danger: #ef4444;
    --danger-soft: rgba(239, 68, 68, 0.12);
    --missing: #fb7185;
    --missing-soft: rgba(251, 113, 133, 0.12);
    --warning: #f59e0b;
    --warning-soft: rgba(245, 158, 11, 0.14);
    --success: #0ea5e9;
    --success-soft: rgba(14, 165, 233, 0.12);
}

html[data-theme] {
    --primary-dark: color-mix(in srgb, var(--primary, #6366f1) 74%, #020617);
    --primary-light: color-mix(in srgb, var(--primary, #6366f1) 18%, #ffffff);
    --card-bg-glass: color-mix(in srgb, var(--card-bg, rgba(30, 41, 59, 0.75)) 88%, rgba(255, 255, 255, 0.08));
    --hover-bg: color-mix(in srgb, var(--card-bg, rgba(30, 41, 59, 0.75)) 84%, var(--primary-soft, rgba(99, 102, 241, 0.12)));
    --secondary-soft: color-mix(in srgb, var(--accent, #f59e0b) 18%, transparent);
    --info-soft: color-mix(in srgb, var(--success, #22c55e) 18%, transparent);
}

/* ===== Theme Selector Button ===== */
.theme-selector-btn {
    position: fixed;
    bottom: 24px;
    left: 24px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--border);
    color: var(--text-main);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.2s;
    z-index: 999;
}

.theme-selector-btn:hover {
    transform: scale(1.1);
    background: var(--primary);
    color: white;
}

/* ===== Theme Selector Modal ===== */
.theme-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 11000;
}

.theme-modal-overlay.active {
    display: flex;
}

.theme-modal {
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.theme-modal h3 {
    margin: 0 0 20px;
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.theme-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.theme-option:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}

.theme-option.active {
    background: var(--primary-light);
    border-color: var(--primary);
}

.theme-color-preview {
    display: flex;
    gap: 4px;
}

.theme-color-dot {
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

.theme-option-info {
    flex: 1;
}

.theme-option-name {
    font-weight: 600;
    font-size: 14px;
}

.theme-option-desc {
    font-size: 11px;
    color: var(--text-sub);
}

/* ===== Unified Button System ===== */
.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    transition: all 0.2s;
    box-shadow: 0 4px 12px var(--primary-soft);
}

.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px var(--primary-soft);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--glass-bg);
    border: 1px solid var(--border);
    color: var(--text-main);
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: var(--primary-soft);
    border-color: var(--primary);
}

.btn-accent {
    background: var(--accent);
    color: white;
    border: none;
    transition: all 0.2s;
    box-shadow: 0 4px 12px var(--accent-soft);
}

.btn-accent:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px var(--accent-soft);
}

.btn-danger {
    background: var(--danger);
    color: white;
    border: none;
    transition: all 0.2s;
    box-shadow: 0 4px 12px var(--danger-soft);
}

.btn-danger:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
    transition: all 0.2s;
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-soft);
}

/* ===== Unified Form Element System ===== */
select,
input[type="text"],
input[type="number"],
input[type="password"],
textarea {
    background-color: var(--input-bg);
    color: var(--text-main);
    border: 1px solid var(--border);
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
}

select:focus,
input:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-soft);
}

/* Fix for dropdown options needing explicit styling in some browsers */
option {
    background-color: var(--bg);
    color: var(--text-main);
}

/* Specific overrides for Light Mode for better legibility */
html[data-theme="light-mode"] select,
html[data-theme="light-mode"] input,
html[data-theme="light-mode"] textarea {
    background-color: #ffffff;
}

html[data-theme="light-mode"] option {
    background-color: #ffffff;
}

html[data-theme="light-mode"] .btn-secondary {
    background: #f1f5f9;
}

html[data-theme="light-mode"] .btn-outline:hover {
    background: #eef2ff;
}

/* ===== Vibe Hub Role Select Buttons ===== */
.role-select-btn {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 16px;
    border-radius: 14px;
    color: white;
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    margin-top: 5px;
}

.role-select-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    filter: brightness(1.1);
}

.role-select-btn .icon {
    font-size: 2.2rem;
    background: rgba(255, 255, 255, 0.2);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

.role-select-btn .text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.role-select-btn .title {
    font-weight: 800;
    font-size: 1.1rem;
}

.role-select-btn .desc {
    font-size: 0.85rem;
    opacity: 0.9;
}

html,
body {
    font-family: var(--font-body);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
}