/* ==========================================================================
   ANALİZ SİSTEM - Dark Theme Under Construction & Document Center
   ========================================================================== */

:root {
    /* Color Palette */
    --bg-dark: #090D16;
    --bg-card: rgba(17, 24, 39, 0.7);
    --bg-card-hover: rgba(30, 41, 59, 0.85);
    --bg-glass: rgba(15, 23, 42, 0.65);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(59, 130, 246, 0.4);

    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --primary-glow: rgba(59, 130, 246, 0.25);

    --accent-cyan: #06B6D4;
    --accent-emerald: #10B981;
    --accent-purple: #8B5CF6;
    --accent-amber: #F59E0B;

    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --text-dim: #64748B;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    background-color: var(--bg-dark);
    line-height: 1.6;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Background Ambient Glows & Grid */
.bg-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -2;
    pointer-events: none;
}

.bg-glow-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.18) 0%, rgba(6, 182, 212, 0.05) 70%, transparent 100%);
    top: -150px;
    left: -150px;
}

.bg-glow-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, rgba(59, 130, 246, 0.05) 70%, transparent 100%);
    bottom: -100px;
    right: -100px;
}

.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -1;
    pointer-events: none;
}

.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navbar */
.navbar {
    padding: 24px 0;
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    background: rgba(9, 13, 22, 0.7);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
}

.logo-box {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    max-height: 50px;
    width: auto;
    object-fit: contain;
    border-radius: var(--radius-sm);
    background: #ffffff;
    padding: 6px 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.logo-fallback {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-main);
    align-items: center;
    gap: 8px;
}

.logo-fallback i {
    color: var(--primary);
}

.nav-status {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-emerald);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-emerald);
    border-radius: 50%;
    position: relative;
}

.pulse-dot::after {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--accent-emerald);
    opacity: 0.4;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.5); opacity: 0.8; }
    100% { transform: scale(1.8); opacity: 0; }
}

/* Hero Section */
.hero {
    padding: 70px 0 50px;
    text-align: center;
}

.hero-content {
    max-width: 840px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #60A5FA;
    padding: 8px 18px;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 24px;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(135deg, #60A5FA 0%, #38BDF8 50%, #818CF8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 680px;
}

/* Progress Card */
.progress-card {
    width: 100%;
    max-width: 540px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(16px);
    padding: 20px 24px;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-main);
}

.progress-header i {
    color: var(--accent-cyan);
    margin-right: 6px;
}

.progress-percent {
    color: var(--accent-cyan);
}

.progress-bar-bg {
    height: 10px;
    width: 100%;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent-cyan) 100%);
    border-radius: var(--radius-full);
    position: relative;
    box-shadow: 0 0 12px rgba(6, 182, 212, 0.5);
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Documents Section */
.documents-section {
    padding: 50px 0 80px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 24px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-cyan);
    margin-bottom: 8px;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.section-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.filter-wrapper {
    min-width: 300px;
}

.search-box {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dim);
    font-size: 0.95rem;
    transition: var(--transition);
}

.search-box input {
    width: 100%;
    padding: 14px 18px 14px 44px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    backdrop-filter: blur(12px);
    transition: var(--transition);
}

.search-box input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.search-box input:focus + .search-icon {
    color: var(--primary);
}

/* Category Filter Tabs */
.category-tabs {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
}

.tab-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.tab-count {
    background: rgba(255, 255, 255, 0.15);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
}

.tab-btn.active .tab-count {
    background: rgba(255, 255, 255, 0.25);
}

/* Document Groups */
.doc-group {
    margin-bottom: 44px;
    transition: var(--transition);
}

.group-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px dashed var(--border-color);
}

.group-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    flex-shrink: 0;
}

.group-icon.catalog {
    background: rgba(59, 130, 246, 0.15);
    color: #60A5FA;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.group-icon.kalite {
    background: rgba(139, 92, 246, 0.15);
    color: #A78BFA;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.group-icon.uts {
    background: rgba(16, 185, 129, 0.15);
    color: #34D399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.group-icon.testler {
    background: rgba(245, 158, 11, 0.15);
    color: #FBBF24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.group-icon.akademik {
    background: rgba(6, 182, 212, 0.15);
    color: #38BDF8;
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.group-title-info h3 {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.3px;
    color: var(--text-main);
}

.group-title-info p {
    font-size: 0.85rem;
    color: var(--text-dim);
}

/* Document Grid */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.doc-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    backdrop-filter: blur(12px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.doc-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.doc-card.featured {
    border-color: rgba(59, 130, 246, 0.4);
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.3) 0%, rgba(15, 23, 42, 0.8) 100%);
}

.doc-card.featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary), var(--accent-cyan));
}

.doc-icon-wrapper {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.doc-icon-wrapper.pdf {
    background: rgba(239, 68, 68, 0.12);
    color: #F87171;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.doc-icon-wrapper.catalog {
    background: rgba(59, 130, 246, 0.15);
    color: #60A5FA;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.doc-icon-wrapper.kalite {
    background: rgba(139, 92, 246, 0.12);
    color: #C084FC;
    border: 1px solid rgba(139, 92, 246, 0.25);
}

.doc-icon-wrapper.test {
    background: rgba(245, 158, 11, 0.12);
    color: #FBBF24;
    border: 1px solid rgba(245, 158, 11, 0.25);
}

.doc-info {
    flex-grow: 1;
    min-width: 0;
}

.doc-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.doc-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.meta-tag {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.meta-tag.highlight {
    color: #93C5FD;
    font-weight: 600;
}

.meta-size {
    font-size: 0.75rem;
    color: var(--text-dim);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.doc-actions {
    flex-shrink: 0;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
}

.btn-download:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-download.primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

.btn-download.primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 6px 20px var(--primary-glow);
}

.no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    background: var(--bg-card);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
}

.no-results i {
    font-size: 2.5rem;
    margin-bottom: 12px;
    color: var(--text-dim);
}

/* Contact Section */
.contact-section {
    padding: 20px 0 80px;
}

.glass-panel {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.7) 0%, rgba(15, 23, 42, 0.8) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    backdrop-filter: blur(16px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.contact-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.contact-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.btn-contact {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent-cyan) 100%);
    color: #ffffff;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    transition: var(--transition);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.3);
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
}

/* Footer */
.footer {
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    background: rgba(9, 13, 22, 0.9);
    margin-top: auto;
    font-size: 0.875rem;
    color: var(--text-dim);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
}

.footer-badge i {
    color: var(--accent-emerald);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid var(--primary);
    color: var(--text-main);
    padding: 14px 22px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(12px);
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast i {
    color: var(--accent-emerald);
    font-size: 1.1rem;
}

/* Responsive Media Queries */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
    }

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

    .section-header {
        flex-direction: column;
        align-items: stretch;
    }

    .glass-panel {
        padding: 28px;
        flex-direction: column;
        text-align: center;
    }

    .btn-contact {
        width: 100%;
        justify-content: center;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .category-tabs {
        overflow-x: auto;
        white-space: nowrap;
        padding-bottom: 12px;
    }
}