/* ============================================
   SANDWICH DELIVERY SYSTEMS - MAIN STYLESHEET
   Logistics Dashboard Theme
   ============================================ */

/* CSS Variables */
:root {
    --bg-primary: #f5f6fa;
    --bg-secondary: #ffffff;
    --accent-blue: #1e3a5f;
    --accent-blue-light: #2c5282;
    --accent-orange: #ed8936;
    --accent-orange-dark: #dd6b20;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-light: #718096;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s ease;
}

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

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--accent-blue);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent-orange);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    background-color: var(--bg-secondary);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-blue);
}

.logo-text span {
    color: var(--accent-orange);
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    background-color: var(--bg-primary);
    color: var(--accent-blue);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--accent-blue);
    margin: 5px 0;
    transition: var(--transition);
    border-radius: 2px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-blue-light) 100%);
    color: white;
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.hero::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");
}

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

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-text h1 {
    color: white;
    font-size: 2.75rem;
    margin-bottom: 1.5rem;
}

.hero-text p {
    color: rgba(255,255,255,0.9);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-illustration {
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(10px);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--accent-orange-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid rgba(255,255,255,0.5);
}

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

/* Main Content */
.main {
    flex: 1;
    padding: 3rem 0;
}

/* Content Cards */
.card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

/* Section Styles */
.section {
    margin-bottom: 4rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--accent-orange);
    border-radius: 2px;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--bg-primary), #e8eef5);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--accent-blue);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

/* Info Cards */
.info-card {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    border-left: 4px solid var(--accent-orange);
}

.info-card-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent-blue);
}

/* Process Steps */
.process-steps {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
}

.process-step {
    flex: 1;
    text-align: center;
    position: relative;
}

.process-step::after {
    content: '→';
    position: absolute;
    right: -0.75rem;
    top: 30%;
    color: var(--accent-orange);
    font-size: 1.5rem;
    font-weight: bold;
}

.process-step:last-child::after {
    display: none;
}

.step-number {
    width: 40px;
    height: 40px;
    background-color: var(--accent-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-weight: 700;
}

/* Stats Section */
.stats-section {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-light));
    padding: 3rem 0;
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item h3 {
    color: var(--accent-orange);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: rgba(255,255,255,0.9);
    margin: 0;
}

/* Transportation Icons */
.transport-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.transport-item {
    text-align: center;
    padding: 2rem;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.transport-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--accent-orange), var(--accent-orange-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2.5rem;
    color: white;
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-blue);
    transition: var(--transition);
}

.faq-question:hover {
    background-color: var(--bg-primary);
}

.faq-answer {
    padding: 0 1.5rem 1.25rem;
    color: var(--text-secondary);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--accent-orange);
    transition: var(--transition);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

/* Contact Form */
.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-form {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Contact Info */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-info-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.contact-info-icon {
    width: 50px;
    height: 50px;
    background-color: var(--accent-blue);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-info-content h4 {
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.contact-info-content p {
    margin: 0;
    color: var(--text-secondary);
}

/* Disclaimer Box */
.disclaimer-box {
    background-color: #fffbeb;
    border: 1px solid #fcd34d;
    border-left: 4px solid var(--accent-orange);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 2rem 0;
}

.disclaimer-box h4 {
    color: var(--accent-orange-dark);
    margin-bottom: 0.5rem;
}

.disclaimer-box p {
    margin: 0;
    font-size: 0.95rem;
}

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

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand p {
    color: rgba(255,255,255,0.8);
    margin-top: 1rem;
}

.footer h4 {
    color: white;
    margin-bottom: 1.25rem;
    font-size: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255,255,255,0.8);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-orange);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.2);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-disclaimer {
    background-color: rgba(0,0,0,0.2);
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.9);
}

.footer-copyright {
    color: rgba(255,255,255,0.7);
    font-size: 0.875rem;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-light));
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.page-header h1 {
    color: white;
    margin-bottom: 0.5rem;
}

.page-header p {
    color: rgba(255,255,255,0.9);
    font-size: 1.125rem;
    margin: 0;
}

/* Breadcrumbs */
.breadcrumbs {
    padding: 1rem 0;
    font-size: 0.875rem;
}

.breadcrumbs a {
    color: var(--text-light);
}

.breadcrumbs span {
    color: var(--text-light);
    margin: 0 0.5rem;
}

/* Content Page Layout */
.content-page {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
}

.content-page h2 {
    margin-top: 2rem;
}

.content-page h2:first-child {
    margin-top: 0;
}

/* Diagram Styles */
.diagram-container {
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 2rem;
    margin: 2rem 0;
    text-align: center;
}

.diagram-title {
    font-weight: 600;
    color: var(--accent-blue);
    margin-top: 1rem;
}

/* Icon List */
.icon-list {
    list-style: none;
    padding: 0;
}

.icon-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
}

.icon-list-icon {
    width: 40px;
    height: 40px;
    background-color: var(--accent-blue);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .header .container {
        flex-wrap: wrap;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav {
        width: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav.active {
        max-height: 500px;
    }
    
    .nav-list {
        flex-direction: column;
        width: 100%;
        padding: 1rem 0;
    }
    
    .nav-link {
        display: block;
        width: 100%;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .transport-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-section {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
    }
    
    .process-step::after {
        content: '↓';
        right: auto;
        top: auto;
        bottom: -1.5rem;
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .content-page {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .section {
        margin-bottom: 2rem;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.py-2 { padding-top: 1rem; padding-bottom: 1rem; }
.py-3 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.hidden { display: none; }

/* Print Styles */
@media print {
    .header,
    .footer,
    .btn,
    .contact-form {
        display: none;
    }
    
    body {
        background: white;
    }
    
    .card,
    .content-page {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}