/* =============================================
   Eren Koca Creative Studio - Premium CSS
   Theme: Apple / Awwwards / Modern SaaS / Creative Agency
   Color Palette: Black, Dark Grays, White, and subtle Gradients
   ============================================= */

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

/* Variables */
:root {
    --black: #000000;
    --dark-1: #111111;
    --dark-2: #1A1A1A;
    --white: #FFFFFF;
    --gray-light: #D9D9D9;
    --gray-mid: #888888;
    --accent: #FFFFFF; 
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--black);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.text-gradient {
    background: linear-gradient(135deg, #FFFFFF 0%, #888888 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-smooth);
    cursor: pointer;
    border: none;
    gap: 10px;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.15);
}

.btn-outline {
    background-color: transparent;
    color: var(--white);
    border: 1px solid var(--white);
}

.btn-outline:hover {
    background-color: var(--white);
    color: var(--black);
    transform: translateY(-3px);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 24px 0;
    transition: all var(--transition-smooth);
    background: transparent;
}

.header.scrolled {
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 16px 0;
    border-bottom: 1px solid var(--glass-border);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--white);
    color: var(--black);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 0.8rem;
    font-weight: 900;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--gray-light);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--white);
    transition: width var(--transition-smooth);
}

.nav-links a:hover {
    color: var(--white);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--white);
    cursor: pointer;
}

/* Glass Card */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 40px;
    transition: all var(--transition-smooth);
}

.glass-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Footer */
.footer {
    background-color: var(--dark-1);
    padding: 80px 0 40px;
    border-top: 1px solid var(--dark-2);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--gray-mid);
    margin-bottom: 24px;
}

.footer-socials {
    display: flex;
    gap: 16px;
}

.footer-socials a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--dark-2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.footer-socials a:hover {
    background: var(--white);
    color: var(--black);
}

.footer-links h4 {
    margin-bottom: 24px;
    font-size: 1.1rem;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    color: var(--gray-mid);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--dark-2);
    color: var(--gray-mid);
    font-size: 0.9rem;
}

/* Forms */
.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--gray-light);
}

.form-control {
    width: 100%;
    padding: 16px 20px;
    background: var(--dark-2);
    border: 1px solid var(--dark-2);
    color: var(--white);
    border-radius: var(--radius-sm);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--gray-mid);
    background: var(--dark-1);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
    .nav-links {
        display: none;
    }
    .nav-toggle {
        display: block;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    .section {
        padding: 40px 0;
    }
    .glass-card {
        padding: 25px;
    }
    .btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }
    .footer {
        padding: 50px 0 30px;
    }
    .footer-brand h3 {
        font-size: 1.2rem;
    }
}

/* Form Validations UI */
.alert {
    padding: 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-weight: 500;
}
.alert-danger {
    background: rgba(220, 53, 69, 0.1);
    color: #ff6b6b;
    border: 1px solid rgba(220, 53, 69, 0.2);
}
.alert-success {
    background: rgba(40, 167, 69, 0.1);
    color: #51cf66;
    border: 1px solid rgba(40, 167, 69, 0.2);
}

/* Admin Specific Overrides */
body.admin-body {
    background: #f8f9fa;
    color: #333;
}