/* =============================================
   PVD Project - Global Stiller & Login Sayfası
   ============================================= */

/* Google Fonts - Inter */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* =============================================
   CSS Değişkenleri (Design Tokens)
   ============================================= */
:root {
    /* Renkler */
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.4);
    
    --accent: #06b6d4;
    --accent-light: #22d3ee;
    
    --success: #10b981;
    --success-light: #34d399;
    --warning: #f59e0b;
    --warning-light: #fbbf24;
    --danger: #ef4444;
    --danger-light: #f87171;
    --info: #3b82f6;
    
    /* Koyu Tema */
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-card: rgba(26, 26, 46, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --bg-glass-hover: rgba(255, 255, 255, 0.1);
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.12);
    
    /* Gölgeler */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
    
    /* Tipografi */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 1.875rem;
    --font-4xl: 2.25rem;
    
    /* Geçişler */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Köşe Yuvarlatma */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-light);
}

/* =============================================
   Login Sayfası
   ============================================= */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 20px;
}

/* Animasyonlu Arka Plan */
.login-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #16213e 100%);
}

.login-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 20%, rgba(99, 102, 241, 0.12) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 50%, rgba(139, 92, 246, 0.06) 0%, transparent 60%);
    animation: bgPulse 8s ease-in-out infinite alternate;
}

@keyframes bgPulse {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-2%, -1%) scale(1.05); }
}

/* Yüzen Parçacıklar */
.floating-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.4;
    animation: float 15s ease-in-out infinite;
}

.floating-orb:nth-child(1) {
    width: 300px;
    height: 300px;
    background: var(--primary);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
    animation-duration: 20s;
}

.floating-orb:nth-child(2) {
    width: 200px;
    height: 200px;
    background: var(--accent);
    top: 60%;
    right: 15%;
    animation-delay: -5s;
    animation-duration: 18s;
}

.floating-orb:nth-child(3) {
    width: 250px;
    height: 250px;
    background: #8b5cf6;
    bottom: 10%;
    left: 30%;
    animation-delay: -10s;
    animation-duration: 22s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(30px, -40px) rotate(5deg); }
    50% { transform: translate(-20px, 20px) rotate(-5deg); }
    75% { transform: translate(15px, 30px) rotate(3deg); }
}

/* Login Kartı */
.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 440px;
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.login-card {
    background: rgba(26, 26, 46, 0.6);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.login-card:hover {
    box-shadow: var(--shadow-lg), 0 0 60px rgba(99, 102, 241, 0.2);
}

/* Logo & Başlık */
.login-header {
    text-align: center;
    margin-bottom: 36px;
}

.login-logo {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    color: white;
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
    animation: logoGlow 3s ease-in-out infinite alternate;
}

@keyframes logoGlow {
    0% { box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3); }
    100% { box-shadow: 0 8px 32px rgba(99, 102, 241, 0.5), 0 0 48px rgba(99, 102, 241, 0.15); }
}

.login-header h1 {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.login-header p {
    font-size: var(--font-sm);
    color: var(--text-secondary);
    font-weight: 400;
}

/* Form Alanları */
.form-group {
    margin-bottom: 20px;
    position: relative;
}

.form-group label {
    display: block;
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
    transition: color var(--transition-fast);
}

.form-group:focus-within label {
    color: var(--primary-light);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper .input-icon {
    position: absolute;
    left: 14px;
    font-size: 18px;
    color: var(--text-muted);
    transition: color var(--transition-fast);
    pointer-events: none;
    z-index: 1;
}

.input-wrapper:focus-within .input-icon {
    color: var(--primary-light);
}

.form-control {
    width: 100%;
    padding: 14px 16px 14px 46px;
    background: rgba(255, 255, 255, 0.04);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: var(--font-base);
    transition: all var(--transition-base);
    outline: none;
}

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

.form-control:hover {
    border-color: var(--border-light);
    background: rgba(255, 255, 255, 0.06);
}

.form-control:focus {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.06);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

/* Şifre Toggle */
.password-toggle {
    position: absolute;
    right: 14px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 18px;
    padding: 4px;
    transition: color var(--transition-fast);
    z-index: 1;
}

.password-toggle:hover {
    color: var(--text-primary);
}

/* Login Butonu */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    outline: none;
    text-decoration: none;
    line-height: 1;
}

.btn-primary {
    width: 100%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Alert Mesajları */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    font-size: var(--font-sm);
    font-weight: 500;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: alertSlide 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    border: 1px solid;
}

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

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-light);
    border-color: rgba(239, 68, 68, 0.2);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-light);
    border-color: rgba(16, 185, 129, 0.2);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-light);
    border-color: rgba(245, 158, 11, 0.2);
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    color: #93c5fd;
    border-color: rgba(59, 130, 246, 0.2);
}

/* Lockout Countdown */
.lockout-timer {
    text-align: center;
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--danger-light);
    font-variant-numeric: tabular-nums;
    margin-top: 4px;
}

/* Login Footer */
.login-footer {
    text-align: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.login-footer p {
    font-size: var(--font-xs);
    color: var(--text-muted);
}

/* =============================================
   Hata Sayfaları (403, 404)
   ============================================= */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 50%, #16213e 100%);
}

.error-container {
    max-width: 480px;
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.error-code {
    font-size: 120px;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    letter-spacing: -0.04em;
}

.error-title {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.error-description {
    font-size: var(--font-base);
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
}

.btn-outline {
    padding: 12px 28px;
    background: transparent;
    color: var(--primary-light);
    border: 1.5px solid var(--primary);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-outline:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--primary-light);
    transform: translateY(-2px);
    color: var(--primary-light);
}

/* =============================================
   Responsive
   ============================================= */
@media (max-width: 480px) {
    .login-card {
        padding: 36px 24px;
    }
    
    .login-header h1 {
        font-size: var(--font-xl);
    }
    
    .error-code {
        font-size: 80px;
    }
}