/* ==========================================================================
   İDARECİNET - OKUL YÖNETİCİLERİ BİLGİ & BELGE PAYLAŞIM PLATFORMU
   Ana Stil Dosyası (Design Tokens, Reset, Typography, Global Layout)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    /* Color Palette - Executive Dark (Default) */
    --bg-base: #090d16;
    --bg-surface: #0f172a;
    --bg-surface-elevated: #1e293b;
    --bg-surface-card: rgba(30, 41, 59, 0.7);
    --bg-glass: rgba(15, 23, 42, 0.85);
    
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-medium: rgba(255, 255, 255, 0.16);
    --border-glow: rgba(56, 189, 248, 0.35);

    /* Brand & Accent Colors */
    --primary: #2563eb;
    --primary-light: #38bdf8;
    --primary-glow: rgba(37, 99, 235, 0.35);
    
    --secondary: #0ea5e9;
    --accent-gold: #f59e0b;
    --accent-emerald: #10b981;
    --accent-ruby: #ef4444;
    --accent-purple: #8b5cf6;

    /* Text & Foregrounds */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-inverse: #0f172a;

    /* Typography */
    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Shadows & Radii */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.45);
    --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.2);

    /* Layout */
    --header-height: 72px;
    --sidebar-width: 280px;
    --max-content-width: 1360px;
    --transition-fast: 0.18s ease;
    --transition-normal: 0.28s ease;
}

/* Light Theme Variables */
[data-theme="light"] {
    --bg-base: #f1f5f9;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #f8fafc;
    --bg-surface-card: rgba(255, 255, 255, 0.9);
    --bg-glass: rgba(255, 255, 255, 0.92);
    
    --border-subtle: rgba(15, 23, 42, 0.08);
    --border-medium: rgba(15, 23, 42, 0.15);
    --border-glow: rgba(37, 99, 235, 0.25);

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.12);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Subtle Animated Ambient Background Grid */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 600px;
    background: radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.18) 0%, rgba(14, 165, 233, 0.06) 45%, transparent 75%);
    pointer-events: none;
    z-index: 0;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
}

a {
    color: inherit;
    text-decoration: none;
}

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

button {
    cursor: pointer;
    border: none;
    background: none;
    outline: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-surface-elevated);
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-base);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Container */
.container {
    max-width: var(--max-content-width);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* Main App Wrapper */
.app-layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header & Navigation Bar */
.navbar {
    height: var(--header-height);
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.brand-logo-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #2563eb 0%, #38bdf8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
}

.brand-badge {
    font-size: 0.68rem;
    padding: 2px 7px;
    border-radius: var(--radius-full);
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent-gold);
    border: 1px solid rgba(245, 158, 11, 0.3);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.92rem;
    transition: var(--transition-fast);
}

.nav-link-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-link-btn.active {
    color: #ffffff;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.25) 0%, rgba(56, 189, 248, 0.15) 100%);
    border: 1px solid var(--border-glow);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* User Profile Badge in Header */
.user-menu-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 14px 6px 8px;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-fast);
}

.user-menu-pill:hover {
    border-color: var(--border-medium);
    background: rgba(255, 255, 255, 0.08);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--primary-light);
}

.user-info-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.user-name-line {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.84rem;
    font-weight: 700;
    color: var(--text-primary);
}

.user-school-line {
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* Hero Section */
.hero-section {
    padding: 48px 0 32px 0;
    border-bottom: 1px solid var(--border-subtle);
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.6) 0%, transparent 100%);
}

.hero-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
}

.hero-text-col {
    max-width: 680px;
}

.hero-pill-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(37, 99, 235, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 16px;
}

.hero-title {
    font-size: 2.35rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 14px;
    line-height: 1.2;
}

.hero-title span {
    background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 24px;
    line-height: 1.6;
}

.hero-stats-row {
    display: flex;
    gap: 24px;
}

.hero-stat-card {
    display: flex;
    flex-direction: column;
    padding: 12px 18px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
}

.hero-stat-val {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    font-family: var(--font-heading);
}

.hero-stat-lbl {
    font-size: 0.76rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Tab Navigation Toolbar */
.section-tabs-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    gap: 16px;
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: 28px;
}

.tabs-group {
    display: flex;
    gap: 8px;
    background: var(--bg-surface);
    padding: 4px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.92rem;
    transition: var(--transition-fast);
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.tab-badge {
    padding: 2px 7px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.72rem;
    font-weight: 700;
}

/* Search and Filters Bar */
.filter-search-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.search-input-box {
    flex: 1;
    position: relative;
}

.search-input-box i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1rem;
}

.search-input-box input {
    width: 100%;
    height: 48px;
    padding: 0 16px 0 46px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.search-input-box input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: var(--shadow-glow);
    background: var(--bg-surface-elevated);
}

.filter-select {
    height: 48px;
    padding: 0 36px 0 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    transition: var(--transition-fast);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-light);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.92rem;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(37, 99, 235, 0.45);
}

.btn-secondary {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-medium);
}

.btn-accent {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-accent:hover {
    background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
    transform: translateY(-1px);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.82rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1.05rem;
    border-radius: var(--radius-lg);
}

/* Category Pills Bar */
.category-pills-bar {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 8px;
    margin-bottom: 24px;
}

.cat-pill-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    transition: var(--transition-fast);
}

.cat-pill-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-medium);
}

.cat-pill-btn.active {
    background: rgba(56, 189, 248, 0.15);
    border-color: var(--primary-light);
    color: var(--primary-light);
}

/* Footer */
.footer {
    margin-top: auto;
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-surface);
    padding: 36px 0;
    color: var(--text-muted);
    font-size: 0.88rem;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a:hover {
    color: var(--text-primary);
}