/* Modern Professional CSS for Karsilas.com */

/* CSS Variables for Consistent Theming */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #FF6B6B;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --dark: #2d3436;
    --light: #f8f9fa;
    --gray: #6c757d;
    --white: #ffffff;
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-secondary: 'Georgia', 'Times New Roman', serif;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --shadow-xl: 0 12px 48px rgba(0,0,0,0.2);
    --border-radius: 10px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--dark);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

/* Container & Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 60px 0;
}

/* Modern Navigation Bar */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-size: 1.75rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: var(--transition);
}

.nav-link:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

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

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

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

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

.btn-warning {
    background: var(--warning-color);
    color: var(--dark);
}

/* Cards */
.card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.card-header {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--light);
}

.card-title {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.card-subtitle {
    color: var(--gray);
    font-size: 0.95rem;
}

.card-body {
    margin-bottom: 1.5rem;
}

.card-footer {
    padding-top: 1rem;
    border-top: 1px solid var(--light);
}

/* Grid System */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Feature Box */
.feature-box {
    text-align: center;
    padding: 2rem;
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.feature-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.feature-description {
    color: var(--gray);
    line-height: 1.8;
}

/* Coupon/Deal Cards */
.deal-card {
    background: var(--white);
    border: 2px dashed var(--success-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.deal-card:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.deal-badge {
    position: absolute;
    top: 20px;
    right: -30px;
    background: var(--danger-color);
    color: var(--white);
    padding: 5px 40px;
    transform: rotate(45deg);
    font-weight: bold;
    font-size: 0.85rem;
    box-shadow: var(--shadow-md);
}

.deal-code {
    background: var(--light);
    border: 2px solid var(--warning-color);
    padding: 15px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 1.25rem;
    text-align: center;
    margin: 1rem 0;
    cursor: pointer;
    transition: var(--transition);
}

.deal-code:hover {
    background: var(--warning-color);
    color: var(--white);
    transform: scale(1.05);
}

/* Tables */
.table {
    width: 100%;
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.table thead {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
}

.table tbody tr {
    border-bottom: 1px solid var(--light);
    transition: var(--transition);
}

.table tbody tr:hover {
    background: var(--light);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--light);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
}

.alert-success {
    background: rgba(40, 167, 69, 0.1);
    border-left: 4px solid var(--success-color);
    color: var(--success-color);
}

.alert-warning {
    background: rgba(255, 193, 7, 0.1);
    border-left: 4px solid var(--warning-color);
    color: #856404;
}

.alert-danger {
    background: rgba(220, 53, 69, 0.1);
    border-left: 4px solid var(--danger-color);
    color: var(--danger-color);
}

.alert-info {
    background: rgba(23, 162, 184, 0.1);
    border-left: 4px solid var(--info-color);
    color: var(--info-color);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 20px;
}

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

.badge-success {
    background: var(--success-color);
    color: var(--white);
}

.badge-warning {
    background: var(--warning-color);
    color: var(--dark);
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 3rem 0 1.5rem;
    margin-top: 5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--white);
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

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

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

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(102, 126, 234, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

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

    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }

    .navbar-container {
        flex-direction: column;
        padding: 1rem;
    }

    .deal-badge {
        right: -35px;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-primary {
    color: var(--primary-color);
}

.text-success {
    color: var(--success-color);
}

.text-danger {
    color: var(--danger-color);
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }
.p-5 { padding: 3rem; }

/* Loading Spinner */
.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}