/* 
 * Main CSS file for Transport & Logistics System
 */

:root {
    --primary-color: #4CAF50;
    --secondary-color: #333;
    --light-color: #f5f5f5;
    --border-color: #ddd;
    --text-color: #333;
    --text-light: #666;
    --success-color: #4CAF50;
    --warning-color: #FFC107;
    --danger-color: #F44336;
    --info-color: #2196F3;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 15px;
    font-weight: 700;
    line-height: 1.2;
}

p {
    margin-bottom: 15px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s;
}

a:hover {
    color: var(--secondary-color);
}

/* Header */
header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

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

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo h1 {
    font-size: 1.5rem;
    margin: 0;
    color: var(--primary-color);
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: var(--text-color);
    font-weight: 500;
    padding: 5px 0;
    position: relative;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--primary-color);
}

nav ul li a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 15px;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 12px 20px;
    font-size: 1.1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: #3d8b40;
    color: #fff;
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: #fff;
}

.btn-secondary:hover {
    background-color: #222;
    color: #fff;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: #fff;
}

/* Hero Section */
.hero {
    background-color: var(--primary-color);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

/* Section Styles */
.section {
    padding: 60px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 2rem;
    color: var(--primary-color);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-footer {
    text-align: center;
    margin-top: 40px;
}

/* Tracking Section */
.tracking-section {
    background-color: #fff;
}

.tracking-form {
    max-width: 600px;
    margin: 0 auto;
}

.tracking-form .form-group {
    display: flex;
}

.tracking-form input {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px 0 0 4px;
    font-size: 1rem;
}

.tracking-form button {
    border-radius: 0 4px 4px 0;
    padding: 12px 20px;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: #fff;
    border-radius: 5px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.service-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.service-card h3 {
    margin-bottom: 15px;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: #fff;
    border-radius: 5px;
    padding: 25px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-card h3 {
    margin-bottom: 10px;
}

/* Call to Action Section */
.cta-section {
    background-color: var(--secondary-color);
    color: #fff;
    text-align: center;
    padding: 60px 0;
}

.cta-content h2 {
    font-size: 2rem;
    margin-bottom: 15px;
}

.cta-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: #fff;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #ccc;
}

.footer-section ul li a:hover {
    color: #fff;
}

.social-links {
    display: flex;
    gap: 10px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-radius: 50%;
    transition: all 0.3s;
}

.social-links a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    margin-left: -10px;
    margin-right: -10px;
}

.form-row .form-group {
    padding-left: 10px;
    padding-right: 10px;
    flex: 1;
}

.col-md-4 {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
}

.col-md-6 {
    flex: 0 0 50%;
    max-width: 50%;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="date"],
textarea,
select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    transition: all 0.3s;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
textarea:focus,
select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    margin-right: 8px;
}

.form-help {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 5px;
}

.form-links {
    margin-top: 20px;
    text-align: center;
}

.form-links a {
    margin: 0 5px;
}

/* Cards */
.card {
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.card-title {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    margin: 0;
    font-size: 1.2rem;
}

.card-content {
    padding: 20px;
}

/* Alerts */
.alert {
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-success {
    background-color: rgba(76, 175, 80, 0.1);
    border: 1px solid rgba(76, 175, 80, 0.5);
    color: var(--success-color);
}

.alert-error {
    background-color: rgba(244, 67, 54, 0.1);
    border: 1px solid rgba(244, 67, 54, 0.5);
    color: var(--danger-color);
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.5);
    color: var(--warning-color);
}

.alert-info {
    background-color: rgba(33, 150, 243, 0.1);
    border: 1px solid rgba(33, 150, 243, 0.5);
    color: var(--info-color);
}

/* Responsive Styles */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    nav ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: #fff;
        box-shadow: 0 5px 5px rgba(0,0,0,0.1);
        padding: 20px;
    }
    
    nav ul.show {
        display: flex;
    }
    
    nav ul li {
        margin: 10px 0;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .tracking-form .form-group {
        flex-direction: column;
    }
    
    .tracking-form input {
        border-radius: 4px;
        margin-bottom: 10px;
    }
    
    .tracking-form button {
        border-radius: 4px;
        width: 100%;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .col-md-4,
    .col-md-6 {
        max-width: 100%;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
}
