/* Cephane - Premium Black & White Design */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --black: #0a0a0a;
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--white);
    color: var(--black);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.8);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: var(--black);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--black);
    letter-spacing: -0.02em;
}

.logo-text small {
    font-size: 0.875rem;
    color: var(--gray-500);
    font-weight: 500;
}

.slogan {
    background: var(--gray-100);
    padding: 0.625rem 1.25rem;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    white-space: nowrap;
}

/* Hero */
.hero {
    padding: 5rem 0 4rem;
    text-align: center;
}

.hero h2 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--black);
}

.hero p {
    font-size: 1.25rem;
    color: var(--gray-600);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Main */
.main-content {
    padding: 3rem 0 6rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--black);
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 5rem;
}

.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 24px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    border-color: var(--gray-400);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.card-header {
    background: var(--black);
    color: var(--white);
    padding: 2.5rem 2rem 2rem;
}

.card-header h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.card-header p {
    font-size: 1rem;
    opacity: 0.85;
    font-weight: 400;
}

.card-body {
    padding: 2.5rem 2rem;
}

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

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--gray-700);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1.5px solid var(--gray-300);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s;
    background: var(--white);
    color: var(--black);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--black);
    background: var(--gray-50);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--gray-800);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

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

.btn-success {
    background: var(--gray-700);
    color: var(--white);
}

.btn-success:hover {
    background: var(--gray-600);
}

.btn-block {
    width: 100%;
}

.mt-2 {
    margin-top: 1rem;
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-size: 0.9375rem;
    border: 1.5px solid;
}

.alert-success {
    background: #f0fdf4;
    border-color: #86efac;
    color: #166534;
}

.alert-error {
    background: #fef2f2;
    border-color: #fca5a5;
    color: #991b1b;
}

.alert-info {
    background: #eff6ff;
    border-color: #93c5fd;
    color: #1e40af;
}

.alert-warning {
    background: #fffbeb;
    border-color: #fcd34d;
    color: #92400e;
}

/* Badge */
.badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: 8px;
}

.badge-primary { background: var(--black); color: var(--white); }
.badge-success { background: #16a34a; color: var(--white); }
.badge-warning { background: #ea580c; color: var(--white); }
.badge-danger { background: #dc2626; color: var(--white); }
.badge-info { background: #0284c7; color: var(--white); }
.badge-secondary { background: var(--gray-500); color: var(--white); }
.badge-dark { background: var(--gray-800); color: var(--white); }
.badge-light { background: var(--gray-200); color: var(--gray-700); }

/* Status Result */
.status-result {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: 16px;
    display: none;
}

.status-result.active {
    display: block;
}

.status-info {
    display: grid;
    gap: 0.75rem;
    margin-top: 1rem;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 10px;
}

.status-item strong {
    font-weight: 600;
    color: var(--gray-700);
}

/* Timeline */
.timeline {
    position: relative;
    padding: 1rem 0;
    margin: 1.5rem 0;
}

.timeline-item {
    position: relative;
    padding-left: 2.5rem;
    padding-bottom: 1.5rem;
}

.timeline-item:before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: -8px;
    width: 2px;
    background: var(--gray-300);
}

.timeline-item:last-child:before {
    display: none;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 0;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--white);
    border: 2px solid var(--gray-300);
}

.timeline-marker.active {
    background: var(--black);
    border-color: var(--black);
}

.timeline-content {
    background: var(--white);
    padding: 1rem;
    border: 1px solid var(--gray-200);
    border-radius: 10px;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.feature-card {
    text-align: center;
    padding: 2.5rem 2rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 20px;
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--gray-400);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--black);
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.6;
    font-size: 0.9375rem;
}

/* Footer */
footer {
    background: var(--black);
    color: var(--white);
    padding: 3rem 0;
    margin-top: 6rem;
    text-align: center;
}

footer p {
    opacity: 0.8;
    font-size: 0.9375rem;
}

/* Admin Link */
.admin-link {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--black);
    color: var(--white);
    padding: 1rem 1.5rem;
    border-radius: 100px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    transition: all 0.3s;
    z-index: 99;
}

.admin-link:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

/* Utility */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 1024px) {
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
        padding: 1.25rem 0;
    }
    
    .slogan {
        font-size: 0.8125rem;
    }
    
    .hero {
        padding: 3rem 0 2rem;
    }
    
    .hero h2 {
        font-size: 2.25rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .admin-link {
        bottom: 1.5rem;
        right: 1.5rem;
        padding: 0.875rem 1.25rem;
        font-size: 0.875rem;
    }
}