/* ===================================
   AlphaNexus™ by SSSL - Main Stylesheet
   =================================== */

/* Root Variables */
:root {
    /* Typography */
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Roboto Mono', 'Courier New', monospace;

    /* Type Scale - Desktop */
    --text-display: 56px;
    --text-h1: 42px;
    --text-h2: 32px;
    --text-h3: 24px;
    --text-h4: 20px;
    --text-body-lg: 18px;
    --text-body: 16px;
    --text-body-sm: 14px;
    --text-caption: 12px;

    /* Line Heights */
    --line-height-tight: 1.1;
    --line-height-heading: 1.3;
    --line-height-body: 1.6;

    /* Font Weights */
    --weight-regular: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;

    /* Primary - Ocean Blue */
    --primary-950: #042f49;
    --primary-900: #0a4165;
    --primary-800: #125282;
    --primary-700: #1a64a0;
    --primary-600: #2276be;
    --primary-500: #2a88dc;
    --primary-400: #4e9de4;
    --primary-300: #72b2eb;
    --primary-200: #a3cef3;
    --primary-100: #d1e7f9;
    --primary-50: #ebf5fc;

    /* Secondary - Maritime Teal */
    --teal-900: #134e4a;
    --teal-700: #1e6b65;
    --teal-500: #2a8a82;
    --teal-300: #5ab3a9;
    --teal-100: #b2ddd7;

    /* Neutral - Professional Gray */
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;

    /* Functional Colors */
    --success-600: #059669;
    --success-500: #10b981;
    --success-100: #d1fae5;
    --warning-600: #d97706;
    --warning-500: #f59e0b;
    --warning-100: #fef3c7;
    --error-600: #dc2626;
    --error-500: #ef4444;
    --error-100: #fee2e2;

    /* Tracking Status Colors */
    --status-active: #10b981;
    --status-transit: #3b82f6;
    --status-delayed: #f59e0b;
    --status-delivered: #059669;
    --status-pending: #6b7280;

    /* Spacing Scale */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 80px;
    --space-5xl: 96px;

    /* Animation Variables */
    --duration-fast: 150ms;
    --duration-base: 250ms;
    --duration-slow: 350ms;
    --easing-default: cubic-bezier(0.4, 0, 0.2, 1);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

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

body {
    font-family: var(--font-body);
    font-size: var(--text-body);
    line-height: var(--line-height-body);
    color: var(--gray-900);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: var(--weight-semibold);
    line-height: var(--line-height-heading);
    margin-bottom: var(--space-md);
    color: var(--gray-900);
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); }
h4 { font-size: var(--text-h4); }

p {
    margin-bottom: var(--space-md);
}

a {
    color: var(--primary-600);
    text-decoration: none;
    transition: color var(--duration-fast) var(--easing-default);
}

a:hover {
    color: var(--primary-700);
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: 72px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: all var(--duration-base) var(--easing-default);
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 12px;
}

.alphanexus-logo {
    height: 40px;
    width: auto;
}

.sssl-text {
    font-size: 12px;
    color: var(--gray-600);
    border-left: 1px solid var(--gray-300);
    padding-left: 12px;
    margin-left: 4px;
}

.navbar-menu {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-xl);
}

.nav-link {
    font-weight: var(--weight-medium);
    color: var(--gray-700);
    padding: var(--space-sm) 0;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-600);
}

/* Dropdown Menu */
.nav-item {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--duration-base) var(--easing-default);
    margin-top: 8px;
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    color: var(--gray-700);
    transition: background-color var(--duration-fast);
}

.dropdown-menu a:hover {
    background-color: var(--gray-50);
}

.dropdown-divider {
    height: 1px;
    background: var(--gray-200);
    margin: var(--space-sm) 0;
}

/* Navbar Actions */
.navbar-actions {
    display: flex;
    gap: var(--space-md);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--gray-700);
    transition: all var(--duration-base) var(--easing-default);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: white;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-base) var(--easing-default);
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-menu-content {
    padding: var(--space-lg);
}

.mobile-nav-links {
    list-style: none;
    margin-bottom: var(--space-lg);
}

.mobile-nav-links li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--gray-100);
}

.mobile-nav-links a {
    color: var(--gray-700);
    font-weight: var(--weight-medium);
}

.mobile-menu-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* Hero Section */
.hero-tracking {
    background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-700) 100%);
    color: white;
    padding: calc(var(--space-5xl) + 72px) 0 var(--space-5xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-tracking::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    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");
    pointer-events: none;
}

.hero-content {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.brand-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 24px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: var(--space-lg);
    backdrop-filter: blur(10px);
}

.hero-content h1 {
    font-size: var(--text-display);
    font-weight: var(--weight-bold);
    margin-bottom: var(--space-lg);
    color: white;
}

.hero-content p {
    font-size: var(--text-body-lg);
    margin-bottom: var(--space-2xl);
    opacity: 0.9;
}

/* Hero Search */
.hero-search {
    display: flex;
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
    background: white;
    border-radius: 8px;
    padding: 8px;
    box-shadow: var(--shadow-xl);
}

.hero-search input {
    flex: 1;
    padding: 16px 20px;
    border: none;
    font-size: var(--text-body);
    color: var(--gray-900);
    outline: none;
}

.hero-search button {
    padding: 16px 32px;
}

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    max-width: 500px;
    margin: 0 auto;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--text-h2);
    font-weight: var(--weight-bold);
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: var(--text-body-sm);
    opacity: 0.8;
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-ghost,
.btn-primary-small,
.btn-secondary-small {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-weight: var(--weight-medium);
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: all var(--duration-fast) var(--easing-default);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--primary-600);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    color: white;
}

.btn-secondary {
    background-color: white;
    color: var(--primary-600);
    border: 2px solid var(--primary-600);
}

.btn-secondary:hover {
    background-color: var(--primary-50);
    color: var(--primary-700);
}

.btn-ghost {
    background-color: transparent;
    color: var(--gray-700);
}

.btn-ghost:hover {
    background-color: var(--gray-100);
}

.btn-primary-small,
.btn-secondary-small {
    padding: 8px 16px;
    font-size: var(--text-body-sm);
}

.btn-primary-large,
.btn-secondary-large {
    padding: 16px 32px;
    font-size: var(--text-body-lg);
}

.full-width {
    width: 100%;
}

/* Services Section */
.services-grid {
    padding: var(--space-5xl) 0;
    background: white;
}

.services-grid h2 {
    text-align: center;
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    text-align: center;
    color: var(--gray-600);
    font-size: var(--text-body-lg);
    margin-bottom: var(--space-3xl);
}

.services-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
}

/* Service Card */
.service-card {
    background: white;
    border-radius: 12px;
    padding: var(--space-xl);
    border: 1px solid var(--gray-200);
    transition: all var(--duration-base) var(--easing-default);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-500);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--duration-base) var(--easing-default);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-200);
}

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

.service-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-100);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    color: var(--primary-600);
}

.service-card h3 {
    margin-bottom: var(--space-sm);
}

.service-card p {
    color: var(--gray-600);
    margin-bottom: var(--space-lg);
}

.service-features {
    list-style: none;
    margin-bottom: var(--space-lg);
}

.service-features li {
    padding-left: 24px;
    position: relative;
    margin-bottom: var(--space-sm);
    color: var(--gray-600);
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-500);
    font-weight: bold;
}

/* Integration Notice */
.integration-notice {
    background: var(--primary-50);
    border: 1px solid var(--primary-200);
    border-radius: 8px;
    padding: var(--space-lg);
    text-align: center;
}

.integration-notice p {
    margin: 0;
    color: var(--primary-800);
    font-weight: var(--weight-medium);
}

/* Global Coverage Section */
.global-coverage {
    padding: var(--space-5xl) 0;
    background: var(--gray-50);
}

.global-coverage h2 {
    text-align: center;
    margin-bottom: var(--space-sm);
}

.interactive-map {
    margin-top: var(--space-2xl);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

#shipping-routes-map {
    height: 500px;
    background: var(--gray-100);
}

/* Features Section */
.features-section {
    padding: var(--space-5xl) 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.feature-card {
    text-align: center;
    padding: var(--space-xl);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    color: var(--primary-600);
}

.feature-card h3 {
    margin-bottom: var(--space-sm);
    font-size: var(--text-h4);
}

.feature-card p {
    color: var(--gray-600);
}

/* CTA Section */
.cta-section {
    padding: var(--space-5xl) 0;
    background: linear-gradient(135deg, var(--teal-700) 0%, var(--teal-500) 100%);
    color: white;
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    color: white;
    margin-bottom: var(--space-lg);
}

.cta-content p {
    font-size: var(--text-body-lg);
    opacity: 0.9;
    margin-bottom: var(--space-2xl);
}

.cta-buttons {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
}

.btn-primary-large,
.btn-secondary-large {
    background: white;
    color: var(--teal-700);
}

.btn-secondary-large {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary-large:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Footer */
.global-footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.footer-brand img {
    height: 32px;
    filter: brightness(0) invert(1);
}

.footer-brand .by-sssl {
    color: var(--gray-500);
}

.footer-description {
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.footer-section h4 {
    color: white;
    margin-bottom: var(--space-lg);
    font-size: var(--text-body);
}

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

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--gray-300);
    transition: color var(--duration-fast);
}

.footer-links a:hover {
    color: white;
}

.contact-info p {
    margin-bottom: var(--space-sm);
}

.contact-info .btn-secondary-small {
    margin-top: var(--space-md);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-300);
    transition: all var(--duration-fast);
}

.social-links a:hover {
    background: var(--primary-600);
    color: white;
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.copyright p {
    margin-bottom: var(--space-xs);
    font-size: var(--text-body-sm);
}

.footer-links-bottom {
    display: flex;
    gap: var(--space-lg);
}

.footer-links-bottom a {
    color: var(--gray-400);
    font-size: var(--text-body-sm);
}

.footer-links-bottom a:hover {
    color: var(--gray-300);
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.status-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    animation: pulse 2s infinite;
}

.status-active {
    background: var(--success-100);
    color: var(--success-600);
}

.status-transit {
    background: var(--primary-100);
    color: var(--primary-700);
}

.status-delayed {
    background: var(--warning-100);
    color: var(--warning-600);
}

/* Animations */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes countUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Utility Classes */
.text-center { text-align: center; }
.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.pt-1 { padding-top: var(--space-xs); }
.pt-2 { padding-top: var(--space-sm); }
.pt-3 { padding-top: var(--space-md); }
.pt-4 { padding-top: var(--space-lg); }
.pt-5 { padding-top: var(--space-xl); }

.pb-1 { padding-bottom: var(--space-xs); }
.pb-2 { padding-bottom: var(--space-sm); }
.pb-3 { padding-bottom: var(--space-md); }
.pb-4 { padding-bottom: var(--space-lg); }
.pb-5 { padding-bottom: var(--space-xl); }