/**
 * AykaFin - Modern CSS with 3D Design Elements
 * Version: 1.0
 * Description: Sleek, modern, SEO-optimized stylesheet with 3D effects
 */

/* ============================================
   CSS Variables - Modern Color Palette
   ============================================ */
:root {
    /* Primary Colors */
    --color-primary: #2563eb;
    --color-primary-light: #3b82f6;
    --color-primary-dark: #1e40af;
    --color-primary-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);

    /* Secondary Colors */
    --color-secondary: #10b981;
    --color-accent: #f59e0b;
    --color-danger: #ef4444;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-black: #000000;
    --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;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

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

    /* Shadows - 3D Effects */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-3d: 0 20px 60px rgba(0, 0, 0, 0.15), 0 10px 20px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

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

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: all var(--transition-base);
}

button {
    font-family: inherit;
    border: none;
    outline: none;
    cursor: pointer;
}

ul, ol {
    list-style: none;
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section-sm {
    padding: var(--spacing-2xl) 0;
}

.section-lg {
    padding: 5rem 0;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(2rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-600);
}

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

/* ============================================
   Buttons - 3D Effects
   ============================================ */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    text-align: center;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--color-primary-gradient);
    color: var(--color-white);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transform: translateY(0);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(37, 99, 235, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-ghost:hover {
    background: var(--color-gray-50);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* ============================================
   Navigation Header - 3D Effect
   ============================================ */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.main-header.scrolled {
    box-shadow: var(--shadow-lg);
    background: rgba(255, 255, 255, 0.98);
}

.navbar {
    padding: var(--spacing-sm) 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.nav-brand .logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
}

.logo-img {
    height: 40px;
    width: auto;
}

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

.nav-menu {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary-gradient);
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Dropdown Menu - 3D */
.nav-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-3d);
    padding: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}

.dropdown-menu li a:hover {
    background: var(--color-gray-50);
    color: var(--color-primary);
    transform: translateX(5px);
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    padding: 0.5rem;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-gray-900);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

/* ============================================
   Hero Section - 3D
   ============================================ */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
    z-index: 1;
}

.hero-image img {
    filter: drop-shadow(var(--shadow-3d));
    animation: float 6s infinite ease-in-out;
}

/* ============================================
   Cards - 3D Effect
   ============================================ */
.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-100);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-3d);
    border-color: var(--color-primary);
}

.card-glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.card-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: var(--color-primary-gradient);
    color: var(--color-white);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-lg);
}

.card-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-900);
}

.card-text {
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ============================================
   Grid System
   ============================================ */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ============================================
   Footer
   ============================================ */
.main-footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding-top: var(--spacing-3xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand h3 {
    background: var(--color-primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.footer-desc {
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-md);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-800);
    border-radius: var(--radius-md);
    color: var(--color-white);
    transition: all var(--transition-base);
}

.social-links a:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

.footer-col h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--color-gray-400);
    transition: all var(--transition-base);
}

.footer-links a:hover {
    color: var(--color-primary);
    padding-left: 5px;
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-xs);
}

.newsletter-form input {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid var(--color-gray-700);
    background: var(--color-gray-800);
    color: var(--color-white);
    border-radius: var(--radius-md);
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-800);
    padding: var(--spacing-lg) 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-badges {
    display: flex;
    gap: var(--spacing-md);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--color-gray-800);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
}

/* ============================================
   Cookie Consent
   ============================================ */
.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-gray-900);
    color: var(--color-white);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-2xl);
    z-index: var(--z-modal);
    animation: slideUp 0.5s ease-out;
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

/* ============================================
   Scroll to Top
   ============================================ */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--color-primary-gradient);
    color: var(--color-white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-xl);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

.scroll-top.show {
    display: flex;
}

/* ============================================
   Animations
   ============================================ */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* ============================================
   App Store Buttons
   ============================================ */
.app-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.app-store-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background: var(--color-gray-900);
    color: var(--color-white);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    border: 2px solid var(--color-gray-900);
}

.app-store-btn:hover {
    background: var(--color-gray-800);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.app-store-btn i {
    font-size: 2rem;
}

.app-store-btn .btn-text {
    text-align: left;
}

.app-store-btn .btn-text small {
    display: block;
    font-size: 0.75rem;
    opacity: 0.8;
}

.app-store-btn .btn-text strong {
    display: block;
    font-size: 1rem;
    font-weight: 600;
}

.app-download-section {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    padding: 3rem 0;
    text-align: center;
    color: white;
    margin: 3rem 0;
    border-radius: var(--radius-2xl);
}

.app-download-section h2 {
    color: white;
    margin-bottom: 1rem;
}

.app-download-section p {
    color: rgba(255,255,255,0.9);
    margin-bottom: 2rem;
}

/* ============================================
   Responsive Design - Enhanced
   ============================================ */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }

    .container {
        padding: 0 1.5rem;
    }

    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
}

@media (max-width: 768px) {
    /* Navigation */
    .nav-menu,
    .nav-cta {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    .nav-menu.active {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-white);
        box-shadow: var(--shadow-xl);
        padding: var(--spacing-md);
        z-index: 999;
    }

    .nav-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
    }

    .nav-link {
        display: block;
        width: 100%;
        padding: 1rem 0;
        border-bottom: 1px solid var(--color-gray-200);
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 1rem;
        margin-top: 0.5rem;
    }

    /* Hero Section */
    .hero-section {
        min-height: auto;
        padding: 6rem 0 3rem;
    }

    .hero-section .grid-2 {
        gap: 2rem !important;
    }

    .hero-title {
        font-size: 2rem !important;
    }

    .hero-subtitle {
        font-size: 1rem !important;
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-cta .btn {
        width: 100%;
        text-align: center;
    }

    .hero-stats {
        flex-direction: column !important;
        gap: 1rem !important;
    }

    /* Grids */
    .grid,
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr !important;
        gap: 1.5rem;
    }

    /* Sections */
    .section {
        padding: 3rem 0;
    }

    .section-lg {
        padding: 3rem 0;
    }

    /* Cards */
    .card {
        padding: 1.5rem;
    }

    /* Typography */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }

    /* Buttons */
    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .footer-badges {
        flex-direction: column;
        gap: 0.5rem;
    }

    /* Cookie Consent */
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }

    /* App Buttons */
    .app-buttons {
        flex-direction: column;
        align-items: stretch;
    }

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

    /* Newsletter */
    .newsletter-form {
        flex-direction: column;
    }

    .newsletter-form input {
        width: 100%;
    }

    .newsletter-form button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }

    .btn {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }

    .hero-section {
        padding: 5rem 0 2rem;
    }

    .section {
        padding: 2rem 0;
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }