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

:root {
    /* ── Kurumsal tasarım sistemi — ham skala (yeni bileşenler bunları kullanır) ── */
    --navy-950:          #0B1220;
    --navy-900:          #0F1B2E;
    --navy-850:          #122036;
    --navy-800:          #16243B;
    --navy-700:          #1E3050;
    --slate-50:          #F6F7FA;
    --slate-100:         #EEF1F5;
    --slate-200:         #E2E6ED;
    --slate-300:         #CBD2DD;
    --slate-400:         #9AA6BC;
    --slate-500:         #6B7688;
    --slate-600:         #4C5566;
    --slate-900:         #151A23;
    --accent-50:         #FDF1E9;
    --accent-100:        #F8DFC7;
    --accent-600:        #A8460B;

    --primary:           #C2540E;
    --primary-hover:     #A8460B;
    --primary-light:     #FDF1E9;
    --primary-gradient:  linear-gradient(135deg, #C2540E 0%, #A8460B 100%);
    --accent:            #FFC400;
    --accent-light:      #FFF8D6;

    --sidebar-width:     240px;
    --sidebar-collapsed-w: 58px;
    --topbar-h:          50px;

    /* Topbar tokens (always dark navy, theme-independent — bkz. --sb-*) */
    --tb-bg:             #0B1220;
    --tb-border:         rgba(255,255,255,.06);
    --tb-icon:           #8291A8;
    --tb-icon-hover:     #FFFFFF;
    --tb-hover-bg:       rgba(255,255,255,.06);
    --tb-muted:          #7E8AA0;
    --tb-sep:            #4A5670;

    --bg:                #F6F7FA;
    --card:              #FFFFFF;
    --card-bg:           #FFFFFF;
    --bg-secondary:      #EEF1F5;
    --text:              #151A23;
    --text-secondary:    #4C5566;
    --text-muted:        #6B7688;
    --border:            #E2E6ED;
    --border-strong:     #CBD2DD;
    --border-dark:       #1F2937;

    --error:             #B4231F;
    --success:           #16824B;
    --warning:           #D89B00;
    --info:              #2563EB;

    --radius:            8px;
    --radius-sm:         6px;
    --radius-xs:         4px;
    --radius-lg:         8px;

    --shadow:            0 1px 2px rgba(15,27,46,.06);
    --shadow-md:         0 4px 16px rgba(15,27,46,.08);
    --shadow-lg:         0 12px 32px rgba(15,27,46,.14);
    --shadow-colored:    0 4px 20px rgba(194,84,14,.28);
    --transition:        .15s ease;

    /* ── Sidebar tokens (always dark, theme-independent) ── */
    --sb-bg:             #0B1220;
    --sb-bg-hover:       rgba(255,255,255,.05);
    --sb-bg-active:      rgba(194,84,14,.16);
    --sb-accent:         #C2540E;
    --sb-item-color:     #C2CADC;
    --sb-item-hover-c:   #FFFFFF;
    --sb-active-color:   #E08A4F;
    --sb-section-color:  #4A5670;
    --sb-border:         rgba(255,255,255,.07);
    --sb-logo-text:      #FFFFFF;
}

/* ── Dark Theme ─────────────────────────────────────────────────── */
[data-theme="dark"] {
    --bg:                #0E0F16;
    --card:              #16171E;
    --card-bg:           #16171E;
    --bg-secondary:      #1A1C24;
    --text:              #F1F5F9;
    --text-secondary:    #8892A4;
    --text-muted:        #555A66;
    --border:            rgba(255,255,255,.07);
    --border-strong:     rgba(255,255,255,.13);
    --shadow:            0 1px 3px rgba(0,0,0,.55);
    --shadow-md:         0 4px 20px rgba(0,0,0,.5);
    --shadow-lg:         0 12px 48px rgba(0,0,0,.7);
}
/* Sidebar ve topbar her iki temada da her zaman koyu lacivert — değişiklik gerekmiyor */

/* ── Base ───────────────────────────────────────────────────────── */
html, body {
    height: 100%;
    font-family: 'Inter', 'Manrope', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.display { font-family: 'Sora', 'Inter', system-ui, sans-serif; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }

/* ─── App Shell ─────────────────────────────────────────────────── */
.app-shell {
    display: flex;
    min-height: 100vh;
}

/* ─── Sidebar ───────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sb-bg);
    border-right: 1px solid var(--sb-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 200;
    transition: width var(--transition), transform var(--transition);
    overflow: hidden;
}

.sidebar.collapsed { width: var(--sidebar-collapsed-w); }

/* Logo */
.sidebar-logo {
    height: var(--topbar-h);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 14px;
    border-bottom: 1px solid var(--sb-border);
    flex-shrink: 0;
    position: relative;
}

.sidebar-logo .logo-icon {
    width: 30px; height: 30px;
    background: var(--sb-accent);
    border-radius: 7px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 3px 12px rgba(194,84,14,.35);
    transition: box-shadow var(--transition);
}

.sidebar-logo:hover .logo-icon { box-shadow: 0 4px 16px rgba(194,84,14,.45); }

.sidebar-logo .logo-text {
    font-size: .875rem;
    font-weight: 800;
    color: var(--sb-logo-text);
    white-space: nowrap;
    letter-spacing: -.025em;
    transition: opacity var(--transition);
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar.collapsed .logo-text { opacity: 0; pointer-events: none; }

/* Nav */
.sidebar-nav {
    flex: 1;
    padding: 8px;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: none;
}
.sidebar-nav::-webkit-scrollbar { display: none; }

.nav-section-label {
    font-size: .61rem;
    font-weight: 700;
    letter-spacing: .08em;
    color: var(--sb-section-color);
    text-transform: uppercase;
    padding: 14px 10px 5px;
    white-space: nowrap;
    overflow: hidden;
    transition: opacity var(--transition);
    user-select: none;
}
.sidebar.collapsed .nav-section-label { opacity: 0; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 8px 10px;
    border-radius: 6px;
    color: var(--sb-item-color);
    font-size: .855rem;
    font-weight: 600;
    letter-spacing: -.01em;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
    white-space: nowrap;
    overflow: hidden;
    text-decoration: none;
    margin-bottom: 1px;
    position: relative;
    -webkit-font-smoothing: antialiased;
}

.nav-item:hover {
    background: var(--sb-bg-hover);
    color: var(--sb-item-hover-c);
    text-decoration: none;
}

/* "+ Yeni Test" — mockup'ın .new-test-btn'i, sidebar'ın en üstünde vurgulu duruyor */
.nav-item--cta {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.09);
    color: #fff;
    font-weight: 600;
    margin-bottom: 13px;
}
.nav-item--cta:hover { background: rgba(255,255,255,.1); color: #fff; }
.nav-item--cta .nav-icon { color: var(--sb-accent); opacity: 1; }

.nav-item.active {
    background: var(--sb-bg-active);
    color: var(--sb-active-color);
    font-weight: 700;
}

.nav-item.active .nav-icon { color: var(--sb-active-color); opacity: 1; }
.nav-item.active .nav-badge { background: rgba(255,255,255,.18); color: #fff; }

.nav-icon {
    width: 17px; height: 17px;
    flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    opacity: .6;
    transition: opacity var(--transition), color var(--transition);
    color: inherit;
}
.nav-item:hover .nav-icon { opacity: .9; }

.nav-label {
    transition: opacity var(--transition);
    line-height: 1;
}
.sidebar.collapsed .nav-label { opacity: 0; pointer-events: none; }

.nav-badge {
    margin-left: auto;
    background: var(--sb-accent);
    color: #fff;
    font-size: .6rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 4px;
    transition: opacity var(--transition);
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(194,84,14,.4);
    text-decoration: none;
}
.nav-badge:hover { text-decoration: none; color: #fff; }
.nav-badge-icon {
    display: flex; align-items: center; justify-content: center;
    width: 19px; height: 19px;
    padding: 0;
    /* Metnin sağına yapışık yerine biraz boşlukla yakınında dursun —
       .nav-item'ın kendi gap'i (9px) zaten aradaki mesafeyi ayarlıyor,
       auto yerine 0 ile sağa değil metnin hemen ardına yerleşiyor. */
    margin-left: 0;
}
.sidebar.collapsed .nav-badge { opacity: 0; }

/* ── Nav group (collapsible institution menu) ── */
.nav-group { }
.nav-group-toggle {
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
}
.nav-group-arrow {
    margin-left: auto;
    display: flex;
    align-items: center;
    transition: transform .2s ease;
    color: var(--sb-item-color);
    flex-shrink: 0;
}
.nav-group.open .nav-group-arrow { transform: rotate(-180deg); }
.sidebar.collapsed .nav-group-arrow { opacity: 0; }
.nav-group-items {
    overflow: hidden;
    max-height: 0;
    transition: max-height .22s ease;
}
.nav-group.open .nav-group-items { max-height: 260px; }
.nav-sub-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px 6px 28px;
    border-radius: 8px;
    margin: 1px 4px;
    font-size: .78rem;
    font-weight: 500;
    color: var(--sb-item-color);
    text-decoration: none;
    transition: background .12s, color .12s;
}
.nav-sub-item:hover { background: var(--sb-bg-hover); color: var(--sb-item-hover-c); }
.nav-sub-item.active { background: var(--sb-bg-active); color: var(--sb-active-color); font-weight: 700; }
.nav-sub-item .nav-icon { opacity: .7; }
.nav-sub-item.active .nav-icon { opacity: 1; }
.sidebar.collapsed .nav-sub-item .nav-label { opacity: 0; pointer-events: none; }
.sidebar.collapsed .nav-group-items { max-height: 0 !important; }

/* Danger nav item (Hata Bildir) */
.nav-item--danger,
.nav-item--danger .nav-icon { color: #f87171 !important; }
.nav-item--danger:hover { color: #fca5a5 !important; }

/* Sidebar bottom */
.sidebar-bottom {
    padding: 8px;
    border-top: 1px solid var(--sb-border);
    flex-shrink: 0;
}

/* ─── Main Area ──────────────────────────────────────────────────── */
.main-area {
    flex: 1;
    min-width: 0;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition);
    background: var(--bg);
}
.sidebar.collapsed ~ .main-area { margin-left: var(--sidebar-collapsed-w); }

/* ─── Topbar (her zaman koyu lacivert — sidebar gibi tema-bağımsız) ── */
.topbar {
    height: var(--topbar-h);
    min-width: 0;
    background: var(--tb-bg);
    border-bottom: 1px solid var(--tb-border);
    display: flex;
    align-items: center;
    padding: 0 18px;
    gap: 8px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar-toggle {
    width: 30px; height: 30px;
    display: flex; align-items: center; justify-content: center;
    border: none; background: transparent;
    border-radius: 5px;
    color: var(--tb-icon);
    transition: background var(--transition), color var(--transition);
    flex-shrink: 0;
}
.topbar-toggle:hover { background: var(--tb-hover-bg); color: var(--tb-icon-hover); }

@keyframes sidebar-hint-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(194,84,14,.5); background: transparent; }
    50% { box-shadow: 0 0 0 6px rgba(194,84,14,0); background: rgba(194,84,14,.1); }
}
.sidebar-toggle-hint {
    animation: sidebar-hint-pulse 1.4s ease-in-out infinite;
    border-radius: 5px;
}

.topbar-breadcrumb {
    font-size: .8125rem;
    color: var(--tb-muted);
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: -.01em;
    min-width: 0;
    overflow: hidden;
}
.topbar-breadcrumb .current {
    color: #fff;
    font-weight: 600;
    font-size: .8125rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}

.topbar-spacer { flex: 1; }

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 3px;
    flex-shrink: 0;
}

.topbar-btn {
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    border: none; background: transparent;
    border-radius: 5px;
    color: var(--tb-icon);
    cursor: pointer;
    position: relative;
    transition: background var(--transition), color var(--transition);
}
.topbar-btn:hover { background: var(--tb-hover-bg); color: var(--tb-icon-hover); }

.lang-toggle {
    display: flex;
    align-items: center;
    background: var(--tb-hover-bg);
    border-radius: 5px;
    overflow: hidden;
    height: 30px;
    padding: 2px;
    margin: 0 4px;
}
.lang-toggle form {
    display: flex;
    height: 100%;
    margin: 0;
}
.lang-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 100%;
    font-size: .66rem;
    font-weight: 800;
    letter-spacing: .06em;
    text-decoration: none;
    color: var(--tb-icon);
    background: transparent;
    border: 0;
    border-radius: 4px;
    padding: 0;
    cursor: pointer;
    font-family: inherit;
    transition: background .15s, color .15s;
}
.lang-btn:hover { background: rgba(255,255,255,.08); color: #fff; text-decoration: none; }
.lang-btn.active { background: var(--sb-accent); color: #fff; }

.topbar-badge {
    position: absolute;
    top: 5px; right: 6px;
    width: 6px; height: 6px;
    background: var(--sb-accent);
    border-radius: 50%;
    border: 1.5px solid var(--tb-bg);
}

/* Avatar */
.avatar {
    width: 30px; height: 30px;
    border-radius: 50%;
    background: var(--sb-accent);
    color: #fff;
    font-size: .74rem;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    border: 2px solid rgba(255,255,255,.15);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.avatar:hover { border-color: rgba(255,255,255,.3); box-shadow: 0 0 0 4px rgba(194,84,14,.14); }

/* Profile dropdown */
.profile-menu { position: relative; }

.profile-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 224px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 300;
    overflow: hidden;
    display: none;
    animation: fadeIn .15s ease;
}
.profile-dropdown.open { display: block; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-8px) scale(.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.profile-dropdown-header {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}
.profile-dropdown-header .name  { font-weight: 700; font-size: .88rem; color: var(--text); }
.profile-dropdown-header .email { font-size: .75rem; color: var(--text-muted); margin-top: 2px; }

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    font-size: .855rem;
    color: var(--text);
    cursor: pointer;
    transition: background var(--transition);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    text-decoration: none;
    font-family: inherit;
}
.dropdown-item:hover { background: var(--bg); text-decoration: none; }
.dropdown-item.danger { color: var(--error); }
.dropdown-item.danger:hover { background: #FDECEF; }

/* ─── Page Content ───────────────────────────────────────────────── */
.page-content {
    flex: 1;
    min-width: 0;
    padding: 24px 32px 28px;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}
.page-content.no-top-pad { padding-top: 0; }

.page-header { margin-bottom: 28px; }

.page-title {
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -.025em;
    line-height: 1.25;
}
.page-subtitle {
    font-size: .875rem;
    color: var(--text-secondary);
    margin-top: 5px;
    line-height: 1.55;
}

/* ─── Cards ──────────────────────────────────────────────────────── */
.card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: box-shadow .2s ease, transform .2s ease;
}
.card-body { padding: 24px; }
.card-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.card-title {
    font-weight: 700;
    font-size: .95rem;
    color: var(--text);
    letter-spacing: -.015em;
}

/* ─── Upload Outer Card ──────────────────────────────────────────── */
.upload-outer {
    background: var(--card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
}

/* ─── Upload Dropzone ────────────────────────────────────────────── */
.upload-zone {
    border: 2px dashed #D4DBE8;
    border-radius: var(--radius);
    padding: 56px 40px;
    text-align: center;
    cursor: pointer;
    transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
    background: #F8FAFB;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

[data-theme="dark"] .upload-zone {
    background: rgba(255,255,255,.025);
    border-color: rgba(255,255,255,.1);
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--primary);
    background: #FFF7F2;
    box-shadow: 0 0 0 5px rgba(194,84,14,.07);
}

[data-theme="dark"] .upload-zone:hover,
[data-theme="dark"] .upload-zone.drag-over {
    background: rgba(194,84,14,.06);
    box-shadow: 0 0 0 5px rgba(194,84,14,.05);
}

.upload-zone.drag-over .upload-icon { transform: scale(1.07) translateY(-4px); }

/* Upload icon — premium size */
.upload-icon-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 26px;
}

.upload-icon {
    width: 92px; height: 92px;
    background: linear-gradient(145deg, #FFF1E8 0%, #FFE5D0 100%);
    border-radius: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: transform .2s ease;
    box-shadow: 0 8px 32px rgba(194,84,14,.14), 0 2px 8px rgba(194,84,14,.08);
    position: relative;
    z-index: 1;
}

.upload-icon::after {
    content: '';
    position: absolute;
    inset: -10px;
    border-radius: 36px;
    background: radial-gradient(ellipse at center, rgba(194,84,14,.08) 0%, transparent 70%);
    z-index: -1;
}

[data-theme="dark"] .upload-icon {
    background: linear-gradient(145deg, rgba(194,84,14,.18) 0%, rgba(168,70,11,.12) 100%);
}

.upload-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 8px;
    letter-spacing: -.03em;
    line-height: 1.25;
}

.upload-subtitle {
    font-size: .9rem;
    color: var(--text-secondary);
    margin-bottom: 0;
    line-height: 1.6;
}

.upload-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 28px;
}

/* Primary upload button */
.btn-upload-primary {
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 12px 32px;
    font-size: .93rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 9px;
    transition: transform .2s ease, box-shadow .2s ease;
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    z-index: 2;
    box-shadow: 0 4px 20px rgba(194,84,14,.30), 0 2px 6px rgba(194,84,14,.15);
    letter-spacing: -.01em;
}
.btn-upload-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(194,84,14,.40), 0 4px 12px rgba(194,84,14,.18);
    text-decoration: none;
    color: #fff;
}
.btn-upload-primary:active { transform: translateY(0); }

/* Feature chips */
.upload-chips {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 28px;
    flex-wrap: wrap;
}

.upload-chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: .775rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 99px;
    padding: 5px 13px;
    letter-spacing: -.01em;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.upload-chip:hover {
    background: var(--primary-light);
    border-color: rgba(194,84,14,.3);
    color: var(--primary);
}
.upload-chip .chip-icon { color: var(--primary); flex-shrink: 0; }

[data-theme="dark"] .upload-chip { background: rgba(255,255,255,.05); }

/* Legacy .upload-features compatibility */
.upload-features {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 24px;
    flex-wrap: wrap;
}
.upload-feature {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: .78rem;
    color: var(--text-secondary);
}
.upload-feature .check { color: var(--success); }

/* ─── Upload Queue ───────────────────────────────────────────────── */
#uploadQueue {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.upload-item {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    animation: slideIn .2s ease;
    box-shadow: var(--shadow);
}

@keyframes slideIn { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:translateY(0); } }

.upload-item-icon {
    width: 40px; height: 40px;
    background: #FDECEF;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: var(--error);
    flex-shrink: 0;
}

.upload-item-info { flex: 1; min-width: 0; }
.upload-item-name {
    font-weight: 600;
    font-size: .875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}
.upload-item-meta {
    font-size: .78rem;
    color: var(--text-secondary);
    display: flex;
    gap: 12px;
}

.upload-progress-wrap {
    height: 4px;
    background: var(--border);
    border-radius: 99px;
    margin-top: 8px;
    overflow: hidden;
}
.upload-progress-bar {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 99px;
    transition: width .3s ease;
    width: 0%;
}

.upload-item-status {
    font-size: .78rem;
    font-weight: 600;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 6px;
}
.status-uploading { color: var(--primary); }
.status-processing { color: var(--warning); }
.status-done       { color: var(--success); }
.status-error      { color: var(--error); }

/* ─── Recent PDFs ────────────────────────────────────────────────── */
.recent-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.pdf-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow);
}
.pdf-card:hover {
    border-color: rgba(194,84,14,.4);
    box-shadow: 0 8px 28px rgba(194,84,14,.12), 0 2px 8px rgba(194,84,14,.06);
    transform: translateY(-3px);
    text-decoration: none;
}

.pdf-card-thumb {
    height: 130px;
    background: linear-gradient(135deg, #FFF1E8, #FFE0C8);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    position: relative;
    overflow: hidden;
}
.pdf-card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.pdf-card-thumb .pdf-pages-badge {
    position: absolute;
    bottom: 8px; right: 8px;
    background: rgba(0,0,0,.55);
    color: #fff;
    font-size: .7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 99px;
    backdrop-filter: blur(4px);
}

.pdf-card-body { padding: 12px; flex: 1; }
.pdf-card-name {
    font-weight: 600;
    font-size: .825rem;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    margin-bottom: 6px;
    line-height: 1.4;
}
.pdf-card-meta {
    font-size: .75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pdf-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: .7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 99px;
}
.badge-ready      { background: #E8F7F2; color: #0B6B53; }
.badge-processing { background: #FFF6D8; color: #7A5500; }
.badge-error      { background: #FDECEF; color: #991B1B; }

/* ─── Buttons ────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 20px;
    font-size: .875rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all .15s ease;
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    letter-spacing: -.01em;
}
.btn:hover { text-decoration: none; }

.btn-primary {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 2px 8px rgba(194,84,14,.28);
}
.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(194,84,14,.38);
    color: #fff;
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(194,84,14,.2); }

.btn-secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); border-color: var(--border-strong); }

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

.btn-danger { background: #FDECEF; color: var(--error); }
.btn-danger:hover { background: var(--error); color: #fff; }

.btn-sm { padding: 5px 13px; font-size: .8rem; }
.btn-lg { padding: 12px 28px; font-size: .97rem; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

/* ─── Toast ──────────────────────────────────────────────────────── */
#toastContainer {
    position: fixed;
    bottom: 24px; right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    min-width: 288px;
    max-width: 380px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    box-shadow: var(--shadow-lg);
    animation: toastIn .25s ease;
    pointer-events: all;
    font-size: .875rem;
}
.toast.removing { animation: toastOut .25s ease forwards; }

@keyframes toastIn  { from { opacity:0; transform:translateX(24px); } to { opacity:1; transform:translateX(0); } }
@keyframes toastOut { from { opacity:1; transform:translateX(0); } to { opacity:0; transform:translateX(24px); } }

.toast-icon { flex-shrink: 0; margin-top: 1px; }
.toast-body { flex: 1; }
.toast-title { font-weight: 700; margin-bottom: 2px; font-size: .875rem; }
.toast-msg { color: var(--text-secondary); font-size: .82rem; line-height: 1.5; }
.toast-close { background: none; border: none; cursor: pointer; color: var(--text-muted); padding: 0; }
.toast-close:hover { color: var(--text); }

.toast-success .toast-icon { color: var(--success); }
.toast-error   .toast-icon { color: var(--error); }
.toast-warning .toast-icon { color: var(--warning); }
.toast-info    .toast-icon { color: var(--info); }

/* ─── Skeleton ───────────────────────────────────────────────────── */
.skeleton {
    background: linear-gradient(90deg, var(--border) 25%, rgba(255,255,255,.5) 50%, var(--border) 75%);
    background-size: 200% 100%;
    animation: skeleton 1.4s ease infinite;
    border-radius: var(--radius-xs);
}
@keyframes skeleton { from { background-position: 200% 0; } to { background-position: -200% 0; } }

/* ─── App Footer ─────────────────────────────────────────────────── */
.app-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 10px 24px;
    font-size: .75rem;
    color: var(--text-secondary);
    background: var(--card);
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    flex-wrap: wrap;
}
.app-footer-links {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.app-footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition);
}
.app-footer-links a:hover { color: var(--primary); text-decoration: none; }
.app-footer-right {
    display: flex;
    align-items: center;
    gap: 6px;
}
.app-footer-sep { color: var(--border-strong); }

/* ─── Forms ──────────────────────────────────────────────────────── */
.form-group { margin-bottom: 18px; }

.form-label {
    display: block;
    font-size: .82rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 9px 14px;
    font-size: .875rem;
    font-family: inherit;
    color: var(--text);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color .15s, box-shadow .15s;
    line-height: 1.5;
}
.form-control::placeholder { color: var(--text-muted); }
.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(194,84,14,.12);
}
.form-control:disabled {
    background: var(--bg-secondary);
    color: var(--text-muted);
    cursor: not-allowed;
}
.form-control.is-error { border-color: var(--error); }
.form-control.is-error:focus { box-shadow: 0 0 0 3px rgba(220,62,77,.12); }

select.form-control { cursor: pointer; }

.field-error {
    display: block;
    font-size: .78rem;
    color: var(--error);
    margin-top: 4px;
}

/* ─── Badges / Status ────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: .72rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 99px;
    letter-spacing: .02em;
}
.badge-orange   { background: var(--primary-light); color: var(--primary); }
.badge-yellow   { background: var(--accent-light);  color: #7A5500; }
.badge-green    { background: #E8F7F2;  color: #0B6B53; }
.badge-gray     { background: var(--bg-secondary); color: var(--text-muted); border: 1px solid var(--border); }
.badge-red      { background: #FDECEF; color: var(--error); }
.badge-blue     { background: #EAF1FF; color: var(--info); }

/* Status badges for exams/content */
.status-draft     { background: var(--bg-secondary); color: var(--text-muted); border: 1px solid var(--border); }
.status-published { background: #FFF1E8; color: var(--primary); }
.status-archived  { background: #E8F7F2; color: var(--success); }
.status-pending   { background: var(--accent-light); color: #7A5500; }
.status-error-s   { background: #FDECEF; color: var(--error); }

/* ─── Tables ─────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .855rem;
}
.data-table th {
    text-align: left;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 10px 14px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}
.data-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(194,84,14,.03); }

/* ─── Modals ─────────────────────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.45);
    z-index: 9000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    animation: fadeIn .15s ease;
}

.modal {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalIn .2s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: translateY(16px) scale(.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.modal-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -.02em;
}
.modal-close {
    width: 28px; height: 28px;
    display: flex; align-items: center; justify-content: center;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 7px;
    cursor: pointer;
    color: var(--text-muted);
    transition: all var(--transition);
    flex-shrink: 0;
}
.modal-close:hover { background: var(--border); color: var(--text); }

.modal-body { padding: 20px 24px; }
.modal-footer {
    padding: 14px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
}

/* ─── Alert ──────────────────────────────────────────────────────── */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: .875rem;
    margin-bottom: 16px;
    border: 1px solid transparent;
}
.alert-success { background: #E8F7F2; color: #0B6B53; border-color: #B3E8D8; }
.alert-error   { background: #FDECEF; color: #991B1B; border-color: #F5C0C8; }
.alert-warning { background: var(--accent-light); color: #7A5500; border-color: #FFE28A; }
.alert-info    { background: #EAF1FF; color: var(--info); border-color: #BFD3FF; }

/* ─── Empty State ────────────────────────────────────────────────── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 24px;
    text-align: center;
}
.empty-state-icon {
    width: 56px; height: 56px;
    background: var(--primary-light);
    border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    color: var(--primary);
    margin-bottom: 16px;
}
.empty-state-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
}
.empty-state-desc {
    font-size: .875rem;
    color: var(--text-secondary);
    max-width: 360px;
    line-height: 1.6;
    margin-bottom: 20px;
}

/* ─── Mobile sidebar ─────────────────────────────────────────────── */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.45);
    z-index: 190;
}

.sidebar-mobile-close {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--sb-item-color);
    padding: 4px;
    margin-left: auto;
    border-radius: 6px;
    transition: background .15s;
}
.sidebar-mobile-close:hover { background: var(--sb-bg-hover); }

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width) !important;
    }
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    .sidebar.mobile-open ~ .main-area {
        overflow: hidden;
    }
    .sidebar-overlay { display: block; pointer-events: none; opacity: 0; transition: opacity .2s; }
    .sidebar.mobile-open ~ .sidebar-overlay {
        opacity: 1;
        pointer-events: all;
    }
    .main-area { margin-left: 0 !important; }
    .sidebar-mobile-close { display: flex; }
    .page-content { padding: 16px 16px; }
}

@media (max-width: 640px) {
    .page-content { padding: 12px; }
    .topbar { padding: 0 12px; }
}

@media (max-width: 480px) {
    .topbar { padding: 0 10px; gap: 4px; }
    .topbar-breadcrumb { display: none; }
    .lang-toggle { display: none; }
    .page-content { padding: 10px 8px; }
}