/**
 * NAKLIYE NET - Modern Design System
 * Premium SaaS-style design system with gradients, animations, and modern aesthetics
 */

/* ============================================
   1. CSS CUSTOM PROPERTIES (VARIABLES)
   ============================================ */
:root {
    /* Primary Colors - Gradient Blue */
    --primary-50: #E6F3FF;
    --primary-100: #CCE7FF;
    --primary-200: #99CFFF;
    --primary-300: #66B7FF;
    --primary-400: #339FFF;
    --primary-500: #0066FF;  /* Main brand color */
    --primary-600: #0052CC;
    --primary-700: #003D99;
    --primary-800: #002966;
    --primary-900: #001433;

    /* Primary Gradient */
    --gradient-primary: linear-gradient(135deg, #0066FF 0%, #00D4FF 100%);
    --gradient-primary-hover: linear-gradient(135deg, #0052CC 0%, #00B8E6 100%);

    /* Secondary Colors - Orange/Amber */
    --secondary-50: #FFF4E6;
    --secondary-100: #FFE9CC;
    --secondary-200: #FFD399;
    --secondary-300: #FFBD66;
    --secondary-400: #FFA733;
    --secondary-500: #FF6B35;  /* Main secondary */
    --secondary-600: #E64D1A;
    --secondary-700: #CC3300;
    --secondary-800: #991F00;
    --secondary-900: #661400;

    /* Success */
    --success-50: #ECFDF5;
    --success-100: #D1FAE5;
    --success-500: #10B981;
    --success-600: #059669;

    /* Warning */
    --warning-50: #FFFBEB;
    --warning-500: #F59E0B;
    --warning-600: #D97706;

    /* Danger */
    --danger-50: #FEF2F2;
    --danger-500: #EF4444;
    --danger-600: #DC2626;

    /* Neutral/Gray */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;

    /* Spacing Scale (8px base) */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */

    /* Border Radius */
    --radius-sm: 0.375rem;  /* 6px */
    --radius-md: 0.5rem;    /* 8px */
    --radius-lg: 0.75rem;   /* 12px */
    --radius-xl: 1rem;      /* 16px */
    --radius-2xl: 1.5rem;   /* 24px */
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --shadow-glow: 0 0 20px rgba(0, 102, 255, 0.3);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-display: 'Plus Jakarta Sans', 'Inter', sans-serif;

    /* Font Sizes (Fluid Typography) */
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 1.875rem);
    --text-3xl: clamp(1.875rem, 1.6rem + 1.375vw, 2.25rem);
    --text-4xl: clamp(2.25rem, 1.9rem + 1.75vw, 3rem);
    --text-5xl: clamp(3rem, 2.5rem + 2.5vw, 3.75rem);

    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;

    /* Line Heights */
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;

    /* Letter Spacing */
    --tracking-tight: -0.025em;
    --tracking-normal: 0em;
    --tracking-wide: 0.025em;

    /* Transitions */
    --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);

    /* Z-index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Dark Mode Variables */
@media (prefers-color-scheme: dark) {
    :root {
        --gray-50: #111827;
        --gray-100: #1F2937;
        --gray-200: #374151;
        --gray-300: #4B5563;
        --gray-400: #6B7280;
        --gray-500: #9CA3AF;
        --gray-600: #D1D5DB;
        --gray-700: #E5E7EB;
        --gray-800: #F3F4F6;
        --gray-900: #F9FAFB;
    }
}

/* ============================================
   2. BASE STYLES & RESETS
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--gray-900);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   3. TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--gray-900);
}

h1 {
    font-size: var(--text-5xl);
    font-weight: var(--font-extrabold);
}

h2 {
    font-size: var(--text-4xl);
}

h3 {
    font-size: var(--text-3xl);
}

h4 {
    font-size: var(--text-2xl);
}

h5 {
    font-size: var(--text-xl);
}

h6 {
    font-size: var(--text-lg);
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   4. UTILITY CLASSES
   ============================================ */

/* Container */
.container-custom {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Glassmorphism */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.glass-dark {
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

/* Gradient Backgrounds */
.bg-gradient-primary {
    background: var(--gradient-primary);
}

.bg-gradient-mesh {
    background:
        radial-gradient(at 0% 0%, rgba(0, 102, 255, 0.2) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(0, 212, 255, 0.2) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(255, 107, 53, 0.2) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(16, 185, 129, 0.2) 0px, transparent 50%);
    background-color: #ffffff;
}

/* Shadows with Glow */
.shadow-glow-primary {
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* Hover Effects */
.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.hover-glow {
    transition: box-shadow var(--transition-base);
}

.hover-glow:hover {
    box-shadow: var(--shadow-glow);
}

/* ============================================
   5. BUTTON SYSTEM
   ============================================ */

.btn-modern {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    line-height: 1;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-modern:hover::before {
    width: 300px;
    height: 300px;
}

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

.btn-primary-gradient:hover {
    background: var(--gradient-primary-hover);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transform: translateY(-2px);
}

.btn-secondary-gradient {
    background: linear-gradient(135deg, var(--secondary-500) 0%, var(--secondary-600) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

/* ============================================
   6. CARD SYSTEM
   ============================================ */

.card-modern {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.card-modern:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.card-glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-lg);
}

.card-gradient-border {
    position: relative;
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

.card-gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    padding: 2px;
    background: var(--gradient-primary);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

/* ============================================
   7. RESPONSIVE UTILITIES
   ============================================ */

@media (max-width: 640px) {
    .container-custom {
        padding: 0 var(--space-4);
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: var(--text-4xl);
    }

    h2 {
        font-size: var(--text-3xl);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}