/* ═══════════════════════════════════════════════════════════════════════════
   СМАРТ-ДОСКА ДЛЯ МЕГАУРОКОВ — Design System
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── 1. CSS Custom Properties ─────────────────────────────────────────────── */
:root {
    /* Brand */
    --primary:        #1A3A6B;
    --primary-hover:  #142e56;
    --primary-light:  #2a5298;
    --accent:         #E84E0F;
    --accent-hover:   #c7420c;
    --accent-light:   #ff6b35;

    /* Light theme surfaces */
    --bg:             #F5F7FA;
    --surface:        #ffffff;
    --surface-2:      #EEF1F6;
    --border:         #D8DDE8;
    --shadow-color:   rgba(26,58,107,0.10);

    /* Text */
    --text:           #1a2233;
    --text-muted:     #6b7a99;
    --text-inverse:   #ffffff;

    /* Feedback */
    --success:        #22c55e;
    --error:          #ef4444;
    --warning:        #f59e0b;
    --info:           #3b82f6;

    /* Spacing */
    --gap:            1.25rem;
    --gap-sm:         0.75rem;
    --gap-lg:         2rem;
    --radius-sm:      0.5rem;
    --radius:         1rem;
    --radius-lg:      1.5rem;
    --radius-xl:      2rem;
    --radius-full:    9999px;

    /* Typography */
    --board-font:     'Montserrat', sans-serif;
    --font-size-xs:   0.75rem;
    --font-size-sm:   0.875rem;
    --font-size-base: 1rem;
    --font-size-lg:   1.125rem;
    --font-size-xl:   1.375rem;
    --font-size-2xl:  1.75rem;
    --font-size-3xl:  2.25rem;
    --font-size-4xl:  3rem;

    /* Transitions */
    --transition:     0.3s cubic-bezier(0.4,0,0.2,1);
    --transition-fast:0.15s cubic-bezier(0.4,0,0.2,1);

    /* Z-index layers */
    --z-base:         0;
    --z-card:         10;
    --z-header:       100;
    --z-backdrop:     200;
    --z-modal:        300;
    --z-toast:        400;
    --z-medal:        500;

    /* Shadows */
    --shadow-sm:      0 1px 3px var(--shadow-color), 0 1px 2px rgba(0,0,0,0.06);
    --shadow:         0 4px 16px var(--shadow-color), 0 2px 6px rgba(0,0,0,0.06);
    --shadow-md:      0 8px 30px rgba(26,58,107,0.13), 0 3px 10px rgba(0,0,0,0.08);
    --shadow-lg:      0 20px 60px rgba(26,58,107,0.18), 0 8px 20px rgba(0,0,0,0.10);
    --shadow-inner:   inset 0 2px 6px rgba(0,0,0,0.06);
}

/* ── Dark theme ───────────────────────────────────────────────────────────── */
[data-theme="dark"],
.theme-dark {
    --bg:             #131720;
    --surface:        #1C2333;
    --surface-2:      #252D3D;
    --border:         #2e3a52;
    --shadow-color:   rgba(0,0,0,0.4);
    --text:           #e8eaf0;
    --text-muted:     #8892aa;
    --text-inverse:   #1a2233;
    --primary:        #4a7fd4;
    --primary-hover:  #3a6ec0;
    --primary-light:  #6596e0;
}

/* ── 2. Reset & Base ──────────────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--board-font);
    font-size: var(--font-size-base);
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition), color var(--transition);
}

.font-roboto { font-family: 'Roboto', sans-serif; }
.font-montserrat { font-family: 'Montserrat', sans-serif; }

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent); }

ul, ol { list-style: none; }

input, textarea, select, button {
    font-family: inherit;
    font-size: inherit;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    padding: 0.5rem 1rem;
    background: var(--primary);
    color: #fff;
    z-index: var(--z-toast);
    border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { top: 0; }

/* ── 3. Typography ────────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

.text-accent { color: var(--accent); }
.text-primary { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: var(--font-size-sm); }
.text-xs { font-size: var(--font-size-xs); }
.text-center { text-align: center; }
.font-bold { font-weight: 700; }
.font-900 { font-weight: 900; }
.uppercase { text-transform: uppercase; letter-spacing: 0.05em; }

/* ── 4. Layout ────────────────────────────────────────────────────────────── */
#main-content {
    flex: 1;
    width: 100%;
    /*max-width: 1400px;*/
    margin: 0 auto;
    padding: var(--gap-lg) var(--gap);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--gap);
}

.container-sm {
    max-width: 640px;
    margin: 0 auto;
    padding: 0 var(--gap);
}

.page-center {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 200px);
    padding: var(--gap-lg) var(--gap);
}

/* ── 5. Card grid (CSS Grid — left-to-right rows) ──────────────────────────── */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
    align-items: start;
    width: 100%;
}
.card-grid .card {
    break-inside: avoid;
    min-width: 0;
}

/* ── 6. Card component ────────────────────────────────────────────────────── */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    padding: var(--gap);
    break-inside: avoid;
    margin-bottom: var(--gap);
    transition: transform var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--gap-sm);
    margin-bottom: var(--gap-sm);
}

.card-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    background: var(--primary);
    color: #fff;
    font-size: var(--font-size-xs);
    font-weight: 700;
    flex-shrink: 0;
}

.card-body { display: flex; flex-direction: column; gap: 0.5rem; }

.card-field { display: flex; flex-direction: column; gap: 0.2rem; }

.card-field-label {
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.card-field-value {
    font-size: var(--font-size-sm);
    color: var(--text);
    word-break: break-word;
}

.card-image {
    width: 100%;
    border-radius: var(--radius);
    object-fit: cover;
    max-height: 200px;
    margin-top: 0.5rem;
}

.card-files {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-top: 0.375rem;
}

.card-file-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: var(--font-size-xs);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-full);
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--primary);
    transition: background var(--transition-fast);
}
.card-file-link:hover { background: var(--border); }

.card-actions {
    display: flex;
    gap: 0.375rem;
    margin-top: var(--gap-sm);
    padding-top: var(--gap-sm);
    border-top: 1px solid var(--border);
}

.card-score-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: var(--accent);
    color: #fff;
    font-size: var(--font-size-xs);
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-full);
    line-height: 1.4;
}

.card-medal {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    background: rgba(0,0,0,0.55);
    border-radius: var(--radius-xl);
    animation: medalPop 0.6s cubic-bezier(0.34,1.56,0.64,1) both;
    z-index: var(--z-medal);
    backdrop-filter: blur(2px);
    pointer-events: none;
}

.card-rank {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    background: var(--primary);
    color: #fff;
    font-weight: 900;
    font-size: var(--font-size-sm);
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* New card animation */
.card-new {
    animation: slideInCard 0.5s cubic-bezier(0.22,0.61,0.36,1) both;
}

/* ── 7. Buttons ───────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.375rem;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0,0,0,0.15);
}

.btn:active:not(:disabled) { transform: translateY(0); }

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

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); border-color: var(--primary-hover); color: #fff; }

.btn-accent {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.btn-accent:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline:hover:not(:disabled) { background: var(--primary); color: #fff; }

.btn-outline-accent {
    background: transparent;
    color: var(--accent);
    border-color: var(--accent);
}
.btn-outline-accent:hover:not(:disabled) { background: var(--accent); color: #fff; }

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border-color: transparent;
}
.btn-ghost:hover:not(:disabled) { background: var(--surface-2); color: var(--text); }

.btn-danger {
    background: var(--error);
    color: #fff;
    border-color: var(--error);
}
.btn-danger:hover:not(:disabled) { background: #dc2626; color: #fff; }

.btn-success {
    background: var(--success);
    color: #fff;
    border-color: var(--success);
}

.btn-sm {
    padding: 0.375rem 0.875rem;
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: var(--font-size-lg);
}

.btn-xl {
    padding: 1.125rem 2.75rem;
    font-size: var(--font-size-xl);
    letter-spacing: 0.08em;
}

.btn-icon {
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border-radius: var(--radius-full);
    font-size: 1rem;
}

.btn-icon.btn-sm { width: 1.75rem; height: 1.75rem; font-size: 0.75rem; }

/* ── 8. Form elements ─────────────────────────────────────────────────────── */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: var(--gap);
}

label, .form-label {
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
}

.form-label .required {
    color: var(--accent);
    margin-left: 0.25rem;
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26,58,107,0.12);
}

.theme-dark .form-control:focus {
    box-shadow: 0 0 0 3px rgba(74,127,212,0.2);
}

.form-control::placeholder { color: var(--text-muted); opacity: 0.7; }

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%236b7a99' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;
    padding-right: 2.25rem;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 1.125rem;
    height: 1.125rem;
    accent-color: var(--primary);
    cursor: pointer;
    flex-shrink: 0;
}

.form-hint {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: 0.15rem;
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--error);
    margin-top: 0.15rem;
}

.form-row {
    display: grid;
    gap: var(--gap);
    grid-template-columns: 1fr 1fr;
}

@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

/* File input */
.file-drop {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: var(--gap-lg);
    text-align: center;
    color: var(--text-muted);
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast);
    position: relative;
}

.file-drop:hover, .file-drop.drag-over {
    border-color: var(--primary);
    background: var(--surface-2);
}

.file-drop input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
}

.file-drop i { font-size: 2rem; margin-bottom: 0.5rem; color: var(--primary); }

/* ── 9. Modal ─────────────────────────────────────────────────────────────── */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: var(--z-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
}

.modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.92);
    z-index: var(--z-modal);
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: min(90vw, 680px);
    max-height: 90vh;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
    display: flex;
    flex-direction: column;
}

.modal.modal-lg { width: min(96vw, 960px); }
.modal.modal-sm { width: min(90vw, 420px); }
.modal.modal-fullscreen { width: 100vw; max-width: 100vw; height: 100vh; max-height: 100vh; border-radius: 0; }

.modal.active {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
    visibility: visible;
}

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

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text);
}

.modal-close {
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    border: none;
    background: var(--surface-2);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: background var(--transition-fast), color var(--transition-fast);
    flex-shrink: 0;
}

.modal-close:hover { background: var(--error); color: #fff; }

.modal-body {
    padding: var(--gap-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--gap-sm);
    padding: var(--gap) var(--gap-lg);
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    flex-wrap: wrap;
}

/* Scrollbar in modals */
.modal::-webkit-scrollbar { width: 6px; }
.modal::-webkit-scrollbar-track { background: var(--surface-2); }
.modal::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── 10. Navbar / App header ──────────────────────────────────────────────── */
.app-nav {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-header);
}

.app-nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--gap);
    padding: 0.75rem var(--gap);
    max-width: 1400px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.app-nav-brand {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-weight: 900;
    font-size: var(--font-size-lg);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--primary);
    text-decoration: none;
}

.app-nav-brand .brand-accent { color: var(--accent); }

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
}

/* Theme toggle */
.theme-toggle {
    width: 2.5rem;
    height: 1.375rem;
    background: var(--border);
    border-radius: var(--radius-full);
    position: relative;
    cursor: pointer;
    transition: background var(--transition-fast);
    border: none;
    flex-shrink: 0;
}

.theme-toggle::after {
    content: '';
    position: absolute;
    top: 0.125rem;
    left: 0.125rem;
    width: 1.125rem;
    height: 1.125rem;
    border-radius: 50%;
    background: #fff;
    transition: transform var(--transition);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.theme-dark .theme-toggle,
[data-theme="dark"] .theme-toggle {
    background: var(--primary);
}

.theme-dark .theme-toggle::after,
[data-theme="dark"] .theme-toggle::after {
    transform: translateX(1.125rem);
}

/* ── 11. Welcome / Hero screens ────────────────────────────────────────────── */
.hero-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 180px);
    text-align: center;
    padding: var(--gap-lg) var(--gap);
    gap: var(--gap);
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    padding: 0.3rem 1rem;
    border-radius: var(--radius-full);
    margin-bottom: 0.5rem;
}

.hero-title {
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--primary);
    line-height: 1.1;
    animation: heroTitleIn 0.8s cubic-bezier(0.22,0.61,0.36,1) both;
}

.hero-title .accent { color: var(--accent); }

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    max-width: 530px;
    animation: heroTitleIn 0.8s 0.15s cubic-bezier(0.22,0.61,0.36,1) both;
}

.hero-cta {
    animation: heroTitleIn 0.8s 0.3s cubic-bezier(0.22,0.61,0.36,1) both;
}

/* ── 12. Evaluation widgets ────────────────────────────────────────────────── */
.star-row {
    display: flex;
    gap: 0.375rem;
    flex-wrap: wrap;
}

.star-btn {
    font-size: 1.75rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--border);
    transition: color var(--transition-fast), transform var(--transition-fast);
    line-height: 1;
    padding: 0.1rem;
}

.star-btn.active, .star-btn:hover { color: #f59e0b; }
.star-btn:hover { transform: scale(1.15); }

.like-dislike-row {
    display: flex;
    gap: var(--gap);
    align-items: center;
    font-size: var(--font-size-xl);
}

.like-btn, .dislike-btn {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    background: var(--surface-2);
    border: 2px solid var(--border);
    border-radius: var(--radius-full);
    padding: 0.5rem 1.25rem;
    font-size: var(--font-size-base);
    font-weight: 700;
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.like-btn:hover { background: #dcfce7; border-color: var(--success); color: var(--success); transform: scale(1.05); }
.like-btn.active { background: var(--success); border-color: var(--success); color: #fff; }
.dislike-btn:hover { background: #fee2e2; border-color: var(--error); color: var(--error); transform: scale(1.05); }
.dislike-btn.active { background: var(--error); border-color: var(--error); color: #fff; }

.criteria-row {
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
    padding: var(--gap-sm) 0;
    border-bottom: 1px solid var(--border);
}

.criteria-row:last-child { border-bottom: none; }

.criteria-label {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.scale-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.scale-btn {
    padding: 0.25rem 0.75rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-full);
    background: var(--surface-2);
    font-size: var(--font-size-xs);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text);
}

.scale-btn:hover { border-color: var(--primary); color: var(--primary); }
.scale-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ── 13. Admin panel ──────────────────────────────────────────────────────── */
.admin-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: calc(100vh - 60px);
}

@media (max-width: 900px) { .admin-layout { grid-template-columns: 1fr; } }

.admin-sidebar {
    background: var(--surface);
    border-right: 1px solid var(--border);
    padding: var(--gap);
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
}

.admin-content {
    padding: var(--gap-lg);
    overflow-y: auto;
}

.admin-section-title {
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    padding: 0 0.75rem;
    margin: var(--gap-sm) 0 0.375rem;
}

.board-list-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--gap);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: box-shadow var(--transition), transform var(--transition);
}

.board-list-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.board-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--gap);
}

.board-item-title {
    font-size: var(--font-size-base);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text);
}

.board-item-slug {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    font-family: monospace;
}

.board-item-stats {
    display: flex;
    gap: var(--gap);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.board-item-actions {
    display: flex;
    gap: 0.375rem;
    flex-wrap: wrap;
    margin-top: 0.25rem;
}

/* Drag-reorder list */
.field-builder-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: var(--gap-sm);
}

.field-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.5rem 0.75rem;
    cursor: grab;
    transition: box-shadow var(--transition-fast);
}

.field-item:active { cursor: grabbing; box-shadow: var(--shadow-md); }
.field-item.dragging { opacity: 0.5; }
.field-item.drag-over { border-color: var(--primary); background: var(--bg); }

.field-item-drag { color: var(--text-muted); font-size: 1rem; flex-shrink: 0; }
.field-item-info { flex: 1; min-width: 0; }
.field-item-label { font-weight: 600; font-size: var(--font-size-sm); color: var(--text); }
.field-item-type { font-size: var(--font-size-xs); color: var(--text-muted); text-transform: uppercase; }
.field-item-actions { display: flex; gap: 0.25rem; }

/* Admin table */
.admin-table-wrap { overflow-x: auto; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    font-size: var(--font-size-sm);
}

.admin-table th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.admin-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    vertical-align: middle;
}

.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--surface-2); }

/* ── 14. Status / Info boxes ────────────────────────────────────────────────── */
.alert {
    padding: var(--gap-sm) var(--gap);
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    font-size: var(--font-size-sm);
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
}

.alert-info    { background: #eff6ff; border-color: #bfdbfe; color: #1d4ed8; }
.alert-success { background: #f0fdf4; border-color: #bbf7d0; color: #166534; }
.alert-warning { background: #fffbeb; border-color: #fde68a; color: #92400e; }
.alert-error   { background: #fef2f2; border-color: #fecaca; color: #991b1b; }

.theme-dark .alert-info    { background: #1e3a5f; border-color: #2563eb; color: #93c5fd; }
.theme-dark .alert-success { background: #14532d; border-color: #16a34a; color: #86efac; }
.theme-dark .alert-warning { background: #451a03; border-color: #d97706; color: #fcd34d; }
.theme-dark .alert-error   { background: #450a0a; border-color: #dc2626; color: #fca5a5; }

.countdown-box {
    background: var(--surface-2);
    border: 2px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--gap-lg);
    text-align: center;
    max-width: 400px;
}

.countdown-digits {
    font-size: var(--font-size-3xl);
    font-weight: 900;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}

/* ── 15. Toasts ─────────────────────────────────────────────────────────────── */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 360px;
    pointer-events: none;
}

.toast {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    font-size: var(--font-size-sm);
    color: var(--text);
    pointer-events: all;
    animation: toastIn 0.3s cubic-bezier(0.22,0.61,0.36,1) both;
    border-left: 4px solid var(--info);
}

.toast.toast-success { border-left-color: var(--success); }
.toast.toast-error   { border-left-color: var(--error); }
.toast.toast-warning { border-left-color: var(--warning); }

.toast.hiding { animation: toastOut 0.25s ease-in forwards; }
.toast-icon { font-size: 1rem; flex-shrink: 0; margin-top: 0.1rem; }
.toast-text { flex: 1; }

/* ── 16. Loading & Spinner ──────────────────────────────────────────────────── */
.spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

.spinner-sm { width: 1.25rem; height: 1.25rem; border-width: 2px; }

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(var(--bg), 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
}

/* ── 17. Site footer ────────────────────────────────────────────────────────── */
.site-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: var(--gap-lg) var(--gap);
    margin-top: auto;
}

.footer-inner {
    display: flex;
    align-items: center;
    gap: var(--gap-lg);
    max-width: 1400px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.footer-logo {
    height: 64px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    flex: 1;
    min-width: 200px;
}

.footer-labs {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    line-height: 1.5;
}

.footer-email {
    font-size: var(--font-size-sm);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

.footer-copy {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.footer-version {
    background: var(--surface-2);
    padding: 0.1rem 0.4rem;
    border-radius: var(--radius-sm);
    font-family: monospace;
    font-size: 0.7rem;
    margin-left: 0.375rem;
}

/* ── 18. Confetti animation ─────────────────────────────────────────────────── */
#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: var(--z-toast);
}

/* ── 19. Medal / results overlay ────────────────────────────────────────────── */
.results-overlay {
    position: fixed;
    inset: 0;
    background: rgba(26,58,107,0.85);
    backdrop-filter: blur(8px);
    z-index: calc(var(--z-medal) + 10);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--gap);
    color: #fff;
    text-align: center;
    padding: var(--gap-lg);
}

.results-overlay-title {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    animation: heroTitleIn 0.6s cubic-bezier(0.22,0.61,0.36,1) both;
}

.results-stars-row {
    display: flex;
    gap: 1rem;
    font-size: 3rem;
    animation: heroTitleIn 0.6s 0.2s cubic-bezier(0.22,0.61,0.36,1) both;
}

/* ── 20. Evaluator claim indicator ────────────────────────────────────────── */
.evaluator-claimed {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    background: var(--surface-2);
    border-radius: var(--radius-full);
    padding: 0.2rem 0.5rem;
}

.evaluator-claimed.mine {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
}

/* ── 21. Progress bar ───────────────────────────────────────────────────────── */
.progress-bar {
    height: 0.5rem;
    background: var(--surface-2);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: var(--radius-full);
    transition: width 0.6s ease;
}

/* ── 22. Code-entry / PIN screen ─────────────────────────────────────────── */
.code-entry-wrap {
    background: var(--surface);
    border-radius: var(--radius-xl);
    padding: var(--gap-lg);
    box-shadow: var(--shadow-lg);
    width: min(90vw, 400px);
    text-align: center;
}

.code-entry-wrap h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.code-entry-wrap p {
    color: var(--text-muted);
    margin-bottom: var(--gap);
    font-size: var(--font-size-sm);
}

.code-input {
    text-align: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

/* ── 23. Sort controls bar ─────────────────────────────────────────────────── */
.sort-bar {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    flex-wrap: wrap;
    padding: var(--gap-sm) 0;
    margin-bottom: var(--gap);
}

.sort-bar-label {
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

/* ── 24. Chip / badge ───────────────────────────────────────────────────────── */
.chip {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.2rem 0.65rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: var(--surface-2);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.chip-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.chip-accent  { background: var(--accent); color: #fff; border-color: var(--accent); }
.chip-success { background: var(--success); color: #fff; border-color: var(--success); }
.chip-error   { background: var(--error); color: #fff; border-color: var(--error); }
.chip-warning { background: var(--warning); color: #fff; border-color: var(--warning); }

/* ── 25. Divider ────────────────────────────────────────────────────────────── */
.divider {
    height: 1px;
    background: var(--border);
    margin: var(--gap) 0;
}

.divider-text {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: var(--gap) 0;
}

.divider-text::before, .divider-text::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

/* ── 26. Utility helpers ────────────────────────────────────────────────────── */
.d-flex  { display: flex; }
.d-grid  { display: grid; }
.d-none  { display: none !important; }
.d-block { display: block; }

.align-center  { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }
.flex-wrap { flex-wrap: wrap; }
.gap-sm  { gap: var(--gap-sm); }
.gap     { gap: var(--gap); }
.gap-lg  { gap: var(--gap-lg); }

.mt-0  { margin-top: 0; }
.mt-sm { margin-top: var(--gap-sm); }
.mt    { margin-top: var(--gap); }
.mt-lg { margin-top: var(--gap-lg); }
.mb-sm { margin-bottom: var(--gap-sm); }
.mb    { margin-bottom: var(--gap); }
.mb-lg { margin-bottom: var(--gap-lg); }

.w-full  { width: 100%; }
.text-right { text-align: right; }
.nowrap { white-space: nowrap; }

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* ── 27. Keyframe animations ────────────────────────────────────────────────── */
@keyframes heroTitleIn {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideInCard {
    from { opacity: 0; transform: translateY(20px) scale(0.95); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes medalPop {
    from { opacity: 0; transform: scale(0.3); }
    to   { opacity: 1; transform: scale(1); }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes toastIn {
    from { opacity: 0; transform: translateX(100%) scale(0.9); }
    to   { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateX(0); }
    to   { opacity: 0; transform: translateX(100%); }
}

@keyframes confettiFloat {
    0%   { transform: translateY(0) rotate(0deg); opacity: 1; }
    100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

@keyframes pulsePrimary {
    0%, 100% { box-shadow: 0 0 0 0 rgba(26,58,107,0.4); }
    50%       { box-shadow: 0 0 0 12px rgba(26,58,107,0); }
}

@keyframes shimmer {
    from { background-position: -200% 0; }
    to   { background-position: 200% 0; }
}

/* Skeleton loading */
.skeleton {
    background: linear-gradient(90deg, var(--surface-2) 25%, var(--border) 50%, var(--surface-2) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.4s ease-in-out infinite;
    border-radius: var(--radius);
}

/* ── 28. Login page ─────────────────────────────────────────────────────────── */
.login-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f2149 0%, var(--primary) 60%, #2a5298 100%);
    padding: var(--gap);
}

.login-card {
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 3rem 2.5rem;
    width: min(90vw, 420px);
    text-align: center;
}

.login-logo {
    height: 72px;
    width: auto;
    margin: 0 auto var(--gap-lg);
    display: block;
}

.login-title {
    font-size: var(--font-size-xl);
    font-weight: 900;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.login-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--gap-lg);
}

/* ── 29. Responsive adjustments ────────────────────────────────────────────── */
@media (max-width: 768px) {
    :root {
        --gap: 1rem;
        --gap-sm: 0.625rem;
        --gap-lg: 1.5rem;
    }

    h1 { font-size: var(--font-size-2xl); }
    h2 { font-size: var(--font-size-xl); }

    .modal { width: 96vw; }
    .modal-body { padding: var(--gap); }
    .modal-header, .modal-footer { padding: var(--gap-sm) var(--gap); }

    .admin-content { padding: var(--gap); }

    .footer-inner { flex-direction: column; align-items: flex-start; gap: var(--gap); }

    .toast-container { right: 0.75rem; bottom: 0.75rem; max-width: calc(100vw - 1.5rem); }
}

@media (max-width: 480px) {
    .btn-xl { padding: 0.875rem 1.75rem; font-size: var(--font-size-base); }
    .hero-title { font-size: 2rem; }
}

/* ── 30. Print ──────────────────────────────────────────────────────────────── */
@media print {
    .app-nav, .site-footer, .modal-backdrop, .toast-container, .btn, .card-actions { display: none !important; }
    .card { break-inside: avoid; box-shadow: none; border: 1px solid #ccc; }
}

/* ── 31. Lightbox ───────────────────────────────────────────────────────────── */
.lb-nav-btn {
    background: rgba(255,255,255,.15);
    border: none;
    color: #fff;
    font-size: 2rem;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background .2s;
}
.lb-nav-btn:hover { background: rgba(255,255,255,.3); }

/* ── 32. Medal corner badges ────────────────────────────────────────────────── */
.card { position: relative; }

.card-medal-badge {
    position: absolute;
    top: 0.4rem;
    right: 0.4rem;
    font-size: 2.2rem;
    line-height: 1;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,.35));
    pointer-events: none;
    z-index: 1;
}

.card-rank-badge {
    position: absolute;
    top: 0.4rem;
    right: 0.5rem;
    background: var(--surface-2);
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.15rem 0.45rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border);
    pointer-events: none;
    z-index: 1;
}

/* ── 33. Score in card body ─────────────────────────────────────────────────── */
.card-score-body {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent);
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
}

/* ── 34. Print section ───────────────────────────────────────────────────────── */
#print-section { display: none; }

@media print {
    body > *:not(#print-section) { display: none !important; }
    #print-section { display: block !important; }
    .print-table { width: 100%; border-collapse: collapse; font-size: 11pt; }
    .print-table th, .print-table td { border: 1px solid #333; padding: 6px 8px; text-align: left; }
    .print-table th { background: #1A3A6B; color: white; }
    .print-rank { font-weight: 700; font-size: 14pt; text-align: center; }
    .print-score { font-weight: 700; color: #E84E0F; text-align: center; }
    .print-header h1 { font-size: 18pt; margin-bottom: 4px; }
    .print-credits { font-size: 9pt; color: #666; }
    tr { page-break-inside: avoid; }
}

/* ── Admin-authored note ("пояснение") ─────────────────────────────────────
   Shown in the submission/edit form and on the card; read-only for participants. */
.form-note {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    font-size: var(--font-size-sm);
    line-height: 1.4;
    color: var(--text);
    background: var(--surface-2);
    border-left: 3px solid var(--info);
    border-radius: var(--radius);
    padding: 0.5rem 0.75rem;
    margin-bottom: var(--gap, 1rem);
}
.form-note > i { color: var(--info); flex-shrink: 0; }
.form-note a { color: var(--primary); font-weight: 600; text-decoration: underline; }
.form-note a:hover { color: var(--info); }

.card-note {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    font-size: var(--font-size-xs);
    line-height: 1.4;
    color: var(--text-muted);
    border-left: 2px solid var(--info);
    padding-left: 0.5rem;
    margin: 0.375rem 0;
    word-break: break-word;
}
.card-note > i { color: var(--info); flex-shrink: 0; }
.card-note a { color: var(--primary); text-decoration: underline; }

/* Hyperlink field value on a card */
.card-field-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: var(--font-size-sm);
    color: var(--primary);
    text-decoration: underline;
    word-break: break-all;
}
.card-field-link:hover { color: var(--info); }

/* Existing attachment, with its remove toggle, inside the edit form */
.file-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: var(--font-size-xs);
    padding: 0.25rem 0.35rem 0.25rem 0.6rem;
    border-radius: var(--radius-full);
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text);
    max-width: 100%;
}
.file-chip > span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-chip-remove {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.1rem;
    height: 1.1rem;
    flex-shrink: 0;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    line-height: 1;
    transition: background var(--transition-fast), color var(--transition-fast);
}
.file-chip-remove:hover { background: var(--accent, #d33); color: #fff; }
.file-chip.is-removed {
    opacity: 0.55;
    border-style: dashed;
}
.file-chip.is-removed > span { text-decoration: line-through; }

.edit-image-wrap.is-removed img { opacity: 0.4; filter: grayscale(1); }