/* ============================================
   PREMIUM KURUMSAL TASARIM SİSTEMİ
   Modern SaaS Seviyesi Arayüz
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    /* Premium Gradient Colors */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --gradient-warning: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-info: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-dark: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);

    /* Modern Colors */
    --color-primary: #667eea;
    --color-primary-dark: #5568d3;
    --color-primary-light: #8b9aff;

    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.18);

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-900);
    background: var(--color-gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   PREMIUM HEADER
   ============================================ */

.premium-header {
    background: var(--color-white);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--space-4) var(--space-6);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.brand-logo {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base);
}

.brand-logo:hover {
    transform: scale(1.05) rotate(-5deg);
}

.brand-text h1 {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 2px;
}

.brand-text p {
    font-size: 13px;
    color: var(--color-gray-500);
    font-weight: 500;
}

.header-stats {
    display: flex;
    gap: var(--space-6);
}

.stat-item {
    text-align: center;
    padding: var(--space-2) var(--space-4);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    min-width: 100px;
}

.stat-value {
    font-size: 24px;
    font-weight: 800;
}

.stat-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

.header-actions {
    display: flex;
    gap: var(--space-3);
    align-items: center;
}

/* ============================================
   PREMIUM BUTTONS
   ============================================ */

.btn-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-premium::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-logout {
    background: var(--color-white);
    color: var(--color-gray-700);
    border: 2px solid var(--color-gray-200);
}

.btn-logout:hover {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

/* ============================================
   PREMIUM MASA GRID
   ============================================ */

.premium-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-8) var(--space-6);
}

.masa-grid-premium {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-8);
}

.masa-card-premium {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    cursor: pointer;
    transition: all var(--transition-slow);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.masa-card-premium::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.masa-card-premium:hover::before {
    transform: scaleX(1);
}

.masa-card-premium:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-2xl);
    border-color: var(--color-primary);
}

.masa-card-premium.bos {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 50%, #6ee7b7 100%);
    border-color: var(--color-success);
}

.masa-card-premium.dolu {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 50%, #fca5a5 100%);
    border-color: var(--color-danger);
}

.masa-icon-premium {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-4);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--glass-border);
}

.masa-name-premium {
    font-size: 24px;
    font-weight: 800;
    text-align: center;
    margin-bottom: var(--space-2);
    color: var(--color-gray-900);
}

.masa-capacity-premium {
    text-align: center;
    font-size: 14px;
    color: var(--color-gray-600);
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.masa-status-premium {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    width: fit-content;
}

.masa-status-premium.bos {
    background: rgba(16, 185, 129, 0.2);
    color: #065f46;
}

.masa-status-premium.dolu {
    background: rgba(239, 68, 68, 0.2);
    color: #991b1b;
}

.masa-amount-premium {
    text-align: center;
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 2px dashed rgba(0, 0, 0, 0.1);
    font-size: 28px;
    font-weight: 900;
    background: var(--gradient-success);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   PREMIUM BOTTOM NAV
   ============================================ */

.bottom-nav-premium {
    position: fixed;
    bottom: var(--space-6);
    left: 50%;
    transform: translateX(-50%);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-3);
    display: flex;
    gap: var(--space-2);
    box-shadow: var(--shadow-2xl);
    z-index: 1000;
}

.nav-item-premium {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    color: var(--color-gray-600);
    min-width: 80px;
}

.nav-item-premium:hover {
    background: rgba(102, 126, 234, 0.1);
    color: var(--color-primary);
}

.nav-item-premium.active {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-lg);
}

.nav-icon-premium {
    font-size: 24px;
}

.nav-label-premium {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.8;
    }
}

.fade-in-up {
    animation: fadeInUp 0.5s ease-out;
}

.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .masa-grid-premium {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }

    .header-stats {
        display: none;
    }

    .premium-container {
        padding: var(--space-4);
    }

    .bottom-nav-premium {
        bottom: var(--space-4);
        width: calc(100% - 2rem);
    }
}