/* =====================================================
   COOLSIGNREKLAM - PREMIUM CORPORATE DESIGN
   Profesyonel, Modern, Şık Kurumsal Reklam Firması
   ===================================================== */

/* ==================== 
   ROOT VARIABLES - MARKA KİMLİĞİ 
   ==================== */
:root {
    /* Ana Renk Paleti - CoolSign Premium */
    --coolsign-primary: #0066CC;        /* Premium Mavi */
    --coolsign-primary-dark: #004C99;   /* Koyu Mavi */
    --coolsign-primary-light: #3385D6;  /* Açık Mavi */
    
    --coolsign-secondary: #FF6B35;      /* Enerji Turuncu */
    --coolsign-accent: #00C896;         /* Modern Yeşil */
    
    /* Nötr Renkler */
    --coolsign-dark: #1A2332;           /* Koyu Lacivert */
    --coolsign-darker: #0F1419;         /* Daha Koyu */
    --coolsign-gray: #64748B;           /* Orta Gri */
    --coolsign-light-gray: #F1F5F9;     /* Açık Gri Arka Plan */
    --coolsign-white: #FFFFFF;
    
    /* Gradyan Tanımları */
    --coolsign-gradient-primary: linear-gradient(135deg, #0066CC 0%, #004C99 100%);
    --coolsign-gradient-hero: linear-gradient(135deg, rgba(0, 102, 204, 0.95) 0%, rgba(0, 76, 153, 0.95) 100%);
    --coolsign-gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(0, 102, 204, 0.05) 100%);
    
    /* Gölgeler - Premium */
    --shadow-sm: 0 2px 8px rgba(0, 102, 204, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 102, 204, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 102, 204, 0.16);
    --shadow-xl: 0 12px 48px rgba(0, 102, 204, 0.20);
    
    /* Tipografi */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Animasyonlar */
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Boşluklar */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* ==================== 
   GLOBAL STYLES 
   ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    color: var(--coolsign-dark);
    background-color: var(--coolsign-white);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Başlık Stilleri */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    color: var(--coolsign-darker);
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }

/* Link Stilleri */
a {
    color: var(--coolsign-primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--coolsign-primary-dark);
}

/* ==================== 
   HERO SECTION - PREMIUM 
   ==================== */
.coolsign-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--coolsign-gradient-hero);
    overflow: hidden;
}

/* Hero Video Background */
.coolsign-hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    opacity: 0.15;
}

/* Hero Overlay Pattern */
.coolsign-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 200, 150, 0.1) 0%, transparent 50%);
    z-index: 1;
}

/* Hero Content */
.coolsign-hero-content {
    position: relative;
    z-index: 2;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

/* Hero Badge */
.coolsign-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    color: var(--coolsign-white);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: fadeInDown 0.8s ease-out;
}

/* Hero Title */
.coolsign-hero-title {
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 800;
    color: var(--coolsign-white);
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
    animation: fadeInUp 1s ease-out;
}

.coolsign-hero-title .highlight {
    background: linear-gradient(135deg, #FFD700 0%, #FF6B35 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

/* Hero Subtitle */
.coolsign-hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: rgba(255, 255, 255, 0.9);
    max-width: 800px;
    margin: 0 auto 3rem;
    line-height: 1.6;
    animation: fadeInUp 1.2s ease-out;
}

/* Hero CTA Buttons */
.coolsign-hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 4rem;
    animation: fadeInUp 1.4s ease-out;
}

.coolsign-hero-btn {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    text-transform: none;
    letter-spacing: 0.01em;
    box-shadow: var(--shadow-lg);
}

.coolsign-hero-btn-primary {
    background: var(--coolsign-white);
    color: var(--coolsign-primary);
    border: 2px solid var(--coolsign-white);
}

.coolsign-hero-btn-primary:hover {
    background: var(--coolsign-secondary);
    color: var(--coolsign-white);
    border-color: var(--coolsign-secondary);
    transform: translateY(-3px);
    box-shadow: 0 12px 48px rgba(255, 107, 53, 0.3);
}

.coolsign-hero-btn-secondary {
    background: transparent;
    color: var(--coolsign-white);
    border: 2px solid var(--coolsign-white);
}

.coolsign-hero-btn-secondary:hover {
    background: var(--coolsign-white);
    color: var(--coolsign-primary);
    transform: translateY(-3px);
}

/* Hero Stats */
.coolsign-hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
    justify-content: center;
    animation: fadeInUp 1.6s ease-out;
}

.coolsign-hero-stat {
    text-align: center;
    color: var(--coolsign-white);
}

.coolsign-hero-stat-number {
    display: block;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    background: linear-gradient(135deg, #FFD700 0%, #FF6B35 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.coolsign-hero-stat-label {
    display: block;
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 500;
}

/* ==================== 
   SECTION CONTAINERS 
   ==================== */
.coolsign-section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.coolsign-section-light {
    background: var(--coolsign-light-gray);
}

.coolsign-section-dark {
    background: var(--coolsign-darker);
    color: var(--coolsign-white);
}

.coolsign-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Section Headers */
.coolsign-section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.coolsign-section-subtitle {
    display: inline-block;
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--coolsign-primary);
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.coolsign-section-subtitle::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--coolsign-gradient-primary);
    border-radius: 2px;
}

.coolsign-section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--coolsign-darker);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.coolsign-section-dark .coolsign-section-title {
    color: var(--coolsign-white);
}

.coolsign-section-description {
    font-size: 1.15rem;
    color: var(--coolsign-gray);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto;
}

.coolsign-section-dark .coolsign-section-description {
    color: rgba(255, 255, 255, 0.8);
}

/* ==================== 
   PREMIUM CARDS 
   ==================== */
.coolsign-card {
    background: var(--coolsign-white);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    height: 100%;
}

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

.coolsign-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

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

/* Card Icon */
.coolsign-card-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--coolsign-gradient-primary);
    border-radius: var(--radius-md);
    font-size: 2.5rem;
    color: var(--coolsign-white);
    margin-bottom: 1.5rem;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.coolsign-card-icon::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: var(--transition-smooth);
}

.coolsign-card:hover .coolsign-card-icon::before {
    left: 100%;
}

.coolsign-card:hover .coolsign-card-icon {
    transform: scale(1.1) rotate(5deg);
}

/* Card Content */
.coolsign-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--coolsign-darker);
    margin-bottom: 1rem;
}

.coolsign-card-text {
    font-size: 1rem;
    color: var(--coolsign-gray);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* ==================== 
   PROJECT CARDS 
   ==================== */
.coolsign-project-card {
    background: var(--coolsign-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.coolsign-project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.coolsign-project-image {
    position: relative;
    overflow: hidden;
    height: 320px;
}

.coolsign-project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.coolsign-project-card:hover .coolsign-project-image img {
    transform: scale(1.1);
}

/* Project Category Badge */
.coolsign-project-category {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    padding: 0.5rem 1rem;
    background: var(--coolsign-gradient-primary);
    color: var(--coolsign-white);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 2;
}

/* Project Content */
.coolsign-project-content {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.coolsign-project-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--coolsign-darker);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.coolsign-project-description {
    font-size: 1rem;
    color: var(--coolsign-gray);
    line-height: 1.7;
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

/* ==================== 
   BUTTONS - PREMIUM 
   ==================== */
.coolsign-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-primary);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.coolsign-btn::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;
}

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

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

.coolsign-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    color: var(--coolsign-white);
}

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

.coolsign-btn-secondary:hover {
    background: var(--coolsign-primary);
    color: var(--coolsign-white);
    transform: translateY(-3px);
}

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

.coolsign-btn-outline:hover {
    background: var(--coolsign-darker);
    color: var(--coolsign-white);
    border-color: var(--coolsign-darker);
}

/* ==================== 
   STATISTICS SECTION 
   ==================== */
.coolsign-stats {
    background: var(--coolsign-gradient-primary);
    color: var(--coolsign-white);
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.coolsign-stats::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.coolsign-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    position: relative;
    z-index: 1;
}

.coolsign-stat-item {
    text-align: center;
}

.coolsign-stat-number {
    display: block;
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 900;
    line-height: 1;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #FFD700 0%, #FFFFFF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.coolsign-stat-label {
    font-size: 1.2rem;
    font-weight: 500;
    opacity: 0.95;
}

/* ==================== 
   ANIMATIONS 
   ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* ==================== 
   RESPONSIVE DESIGN 
   ==================== */
@media (max-width: 1024px) {
    :root {
        --spacing-xl: 3rem;
        --spacing-lg: 2rem;
    }
    
    .coolsign-hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .coolsign-hero-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-lg: 1.5rem;
    }
    
    .coolsign-hero {
        min-height: 90vh;
    }
    
    .coolsign-hero-content {
        padding: 0 1.5rem;
    }
    
    .coolsign-hero-stats {
        gap: 2rem;
    }
    
    .coolsign-card {
        padding: 2rem;
    }
    
    .coolsign-section-header {
        margin-bottom: 3rem;
    }
    
    .coolsign-project-image {
        height: 250px;
    }
}

@media (max-width: 480px) {
    .coolsign-hero-badge {
        font-size: 0.8rem;
        padding: 0.6rem 1.2rem;
    }
    
    .coolsign-hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .coolsign-card-icon {
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }
}

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

/* Focus Styles */
a:focus,
button:focus,
.coolsign-btn:focus {
    outline: 3px solid var(--coolsign-primary);
    outline-offset: 3px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --coolsign-primary: #0055AA;
        --coolsign-secondary: #DD5522;
    }
}