/* AntTel - Ultra Modern Premium Design */

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

:root {
    --black: #000000;
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f4f4f5;
    --gray-200: #e4e4e7;
    --gray-300: #d4d4d8;
    --gray-400: #a1a1aa;
    --gray-500: #71717a;
    --gray-600: #52525b;
    --gray-700: #3f3f46;
    --gray-800: #27272a;
    --gray-900: #18181b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;
    background: var(--white);
    color: var(--black);
    line-height: 1.5;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 3rem;
}

/* Header - Ultra Clean */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.75rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.logo-icon {
    width: 52px;
    height: 52px;
    background: var(--black);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.cart-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--black);
    color: var(--white);
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all 0.3s;
    position: relative;
}

.cart-link:hover {
    background: var(--gray-800);
    transform: translateY(-2px);
}

.cart-count {
    background: #dc2626;
    color: var(--white);
    padding: 0.25rem 0.625rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
}
    font-size: 1.75rem;
    transition: transform 0.3s ease;
}

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

.logo-text h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--black);
    letter-spacing: -0.03em;
}

.logo-text small {
    font-size: 0.875rem;
    color: var(--gray-500);
    font-weight: 500;
    letter-spacing: 0.02em;
}

.slogan {
    background: var(--black);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* Hero - Maximum Impact */
.hero {
    padding: 8rem 0 6rem;
    text-align: center;
    background: linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
}

.hero h2 {
    font-size: 4.5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.05;
    margin-bottom: 2rem;
    color: var(--black);
}

.hero h2 span {
    display: block;
    background: linear-gradient(135deg, var(--black) 0%, var(--gray-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.375rem;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.7;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 3rem;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--black);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
    font-weight: 500;
    margin-top: 0.25rem;
}

/* Main Content */
.main-content {
    padding: 5rem 0 8rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* Cards Grid - Premium Layout */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    margin-bottom: 6rem;
}

.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 32px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.card:hover {
    border-color: var(--black);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.12);
    transform: translateY(-8px);
}

.card-header {
    background: var(--black);
    color: var(--white);
    padding: 3rem 2.5rem 2.5rem;
    position: relative;
    overflow: hidden;
}

.card-header::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.card-header h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.card-header p {
    font-size: 1.0625rem;
    opacity: 0.85;
    font-weight: 400;
}

.card-body {
    padding: 3rem 2.5rem;
}

/* Forms - Ultra Clean */
.form-group {
    margin-bottom: 1.75rem;
}

.form-group label {
    display: block;
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.625rem;
    color: var(--gray-900);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1.125rem 1.25rem;
    border: 1.5px solid var(--gray-300);
    border-radius: 16px;
    font-size: 1.0625rem;
    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);
    box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.05);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
}

/* Buttons - Maximum Impact */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1.125rem 2rem;
    font-size: 1.0625rem;
    font-weight: 600;
    border: none;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    letter-spacing: -0.01em;
}

.btn-primary {
    background: var(--black);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
    background: var(--gray-800);
    transform: translateY(-3px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
}

.btn-primary:active {
    transform: translateY(-1px);
}

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

.btn-success:hover {
    background: var(--gray-600);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.mt-2 {
    margin-top: 1.25rem;
}

/* Alerts */
.alert {
    padding: 1.125rem 1.5rem;
    border-radius: 16px;
    margin-bottom: 1.75rem;
    font-size: 1rem;
    border: 1.5px solid;
    font-weight: 500;
}

.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: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 10px;
}

.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: 2.5rem;
    padding: 2rem;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: 20px;
    display: none;
}

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

.status-info {
    display: grid;
    gap: 1rem;
    margin-top: 1.5rem;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.125rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    transition: all 0.2s;
}

.status-item:hover {
    border-color: var(--gray-300);
    transform: translateX(4px);
}

.status-item strong {
    font-weight: 600;
    color: var(--gray-900);
}

/* Timeline */
.timeline {
    position: relative;
    padding: 1.5rem 0;
    margin: 2rem 0;
}

.timeline-item {
    position: relative;
    padding-left: 3rem;
    padding-bottom: 2rem;
}

.timeline-item:before {
    content: '';
    position: absolute;
    left: 9px;
    top: 10px;
    bottom: -10px;
    width: 2px;
    background: var(--gray-300);
}

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

.timeline-marker {
    position: absolute;
    left: 0;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--white);
    border: 2px solid var(--gray-300);
    transition: all 0.3s;
}

.timeline-marker.active {
    background: var(--black);
    border-color: var(--black);
    box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.1);
}

.timeline-content {
    background: var(--white);
    padding: 1.25rem;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
}

/* Features Grid - Premium */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
    margin-top: 5rem;
}

.feature-card {
    text-align: center;
    padding: 3rem 2.5rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 28px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
    border-color: var(--black);
    transform: translateY(-6px);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1.75rem;
    display: inline-block;
    transition: transform 0.3s;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--black);
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.7;
    font-size: 1.0625rem;
}

/* Footer */
footer {
    background: var(--black);
    color: var(--white);
    padding: 4rem 0;
    margin-top: 8rem;
    text-align: center;
}

footer p {
    opacity: 0.85;
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

/* Admin Link - Floating */
.admin-link {
    position: fixed;
    bottom: 2.5rem;
    right: 2.5rem;
    background: var(--black);
    color: var(--white);
    padding: 1.125rem 1.75rem;
    border-radius: 100px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
}

.admin-link:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.3);
}

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

/* Responsive */
@media (max-width: 1200px) {
    .container {
        padding: 0 2rem;
    }
}

@media (max-width: 1024px) {
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-stats {
        gap: 2.5rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1.25rem;
        padding: 1.5rem 0;
    }
    
    .hero {
        padding: 5rem 0 4rem;
    }
    
    .hero h2 {
        font-size: 2.75rem;
    }
    
    .hero p {
        font-size: 1.125rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }
    
    .section-header h3 {
        font-size: 2rem;
    }
    
    .admin-link {
        bottom: 2rem;
        right: 2rem;
        padding: 1rem 1.5rem;
        font-size: 0.9375rem;
    }
}

/* Tabs System */
.tabs-container {
    background: #ffffff;
    border: 1px solid var(--gray-200);
    border-radius: 28px;
    overflow: hidden;
    margin-bottom: 5rem;
}

.tabs-header {
    display: flex;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.tab-button {
    flex: 1;
    padding: 1.5rem 2rem;
    background: none;
    border: none;
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
}

.tab-button:hover {
    background: var(--white);
    color: var(--black);
}

.tab-button.active {
    background: var(--white);
    color: var(--black);
    border-bottom-color: var(--black);
}

.tabs-content {
    padding: 3rem 2.5rem;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.tab-card h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.tab-desc {
    font-size: 1.0625rem;
    color: var(--gray-600);
    margin-bottom: 2.5rem;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.75rem;
    margin-top: 2rem;
}

.product-card {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: 20px;
    padding: 2rem 1.75rem;
    text-align: center;
    transition: all 0.3s;
}

.product-card:hover {
    border-color: var(--black);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}

.product-icon {
    font-size: 3rem;
    margin-bottom: 1.25rem;
}

.product-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 0.5rem;
}

.product-code {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 1.25rem;
}

.product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--white);
    border-radius: 12px;
}

.product-price {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--black);
}

.product-stock {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 600;
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--gray-500);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Mobile Responsive for Tabs */
@media (max-width: 768px) {
    .tabs-header {
        flex-direction: column;
    }
    
    .tab-button {
        border-bottom: 1px solid var(--gray-200);
        border-right: none !important;
    }
    
    .tab-button.active {
        border-left: 4px solid var(--black);
        border-bottom-color: var(--gray-200);
    }
    
    .tabs-content {
        padding: 2rem 1.5rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
}

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