/* E-İmza İzmir - Futuristik CSS Tasarım */

/* ===== CSS Variables ===== */
:root {
    /* Colors - Modern gradient palette */
    --primary: #ff6b6b;
    --primary-dark: #ee5a52;
    --primary-light: #ff8787;
    --secondary: #4ecdc4;
    --accent: #ffd93d;
    --success: #6BCF7F;
    --warning: #FFB84C;
    --danger: #F05454;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
    --gradient-secondary: linear-gradient(135deg, #4ECDC4 0%, #44A08D 100%);
    --gradient-accent: linear-gradient(135deg, #FFD93D 0%, #F6C90E 100%);
    --gradient-dark: linear-gradient(135deg, #2C3E50 0%, #34495E 100%);
    --gradient-hero: linear-gradient(135deg, #FF6B6B 0%, #4ECDC4 50%, #FFD93D 100%);

    /* Neutrals */
    --white: #ffffff;
    --black: #000000;
    --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;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;

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

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

    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.4);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

/* ===== Reset & Base ===== */
* {
    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-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
    transition: var(--transition-base);
}

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

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-900);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.btn:hover::before {
    opacity: 1;
}

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

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

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

.btn-accent {
    background: var(--gradient-accent);
    color: var(--white);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-lg {
    padding: 1.125rem 2.25rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
}

/* ===== Header ===== */
.header {
    position: sticky;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    font-weight: 500;
    color: var(--gray-700);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

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

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

.header-cta {
    display: flex;
    gap: var(--spacing-sm);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: var(--transition-base);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 10;
    color: var(--white);
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.hero-title {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

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

/* Animated Background Elements */
.hero-bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.2);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: rgba(129, 140, 248, 0.3);
    bottom: 10%;
    right: 10%;
    animation-delay: 5s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(20px, -20px) scale(1.1); }
    50% { transform: translate(-15px, 15px) scale(0.9); }
    75% { transform: translate(15px, -10px) scale(1.05); }
}

/* ===== Pricing Cards ===== */
.pricing-section {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(to bottom, var(--white) 0%, var(--gray-50) 100%);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-subtitle {
    text-align: center;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.pricing-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 2px solid var(--gray-100);
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transition: height var(--transition-base);
}

.pricing-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.03) 0%, transparent 70%);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.pricing-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.15);
    border-color: rgba(102, 126, 234, 0.2);
}

.pricing-card:hover::before {
    height: 6px;
}

.pricing-card:hover::after {
    opacity: 1;
}

.pricing-card.featured {
    border: 3px solid transparent;
    background: linear-gradient(var(--white), var(--white)) padding-box,
                var(--gradient-primary) border-box;
    transform: scale(1.05);
    box-shadow: 0 20px 50px rgba(102, 126, 234, 0.25);
}

.pricing-card.featured::before {
    height: 6px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
}

.pricing-card.featured:hover {
    transform: scale(1.08) translateY(-10px);
    box-shadow: 0 25px 60px rgba(102, 126, 234, 0.3);
}

.pricing-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 0.8rem;
    font-weight: 700;
    border-radius: 50px;
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3); }
    50% { box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5); }
}

.pricing-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.pricing-price {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.pricing-period {
    color: var(--gray-500);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.pricing-feature {
    padding: 0.625rem 0;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--gray-700);
}

.pricing-feature::before {
    content: '✓';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* ===== Footer ===== */
.footer {
    background: var(--gradient-dark);
    color: var(--white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-title {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-link {
    display: block;
    padding: 0.375rem 0;
    color: var(--gray-300);
    transition: var(--transition-base);
}

.footer-link:hover {
    color: var(--white);
    padding-left: 4px;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--gray-400);
    font-size: 0.875rem;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transition: left var(--transition-base);
    }

    .nav-menu.active {
        left: 0;
    }

    .menu-toggle {
        display: flex;
    }

    .header-cta {
        display: none;
    }

    .hero-cta {
        flex-direction: column;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }