/* CSS Variables */
:root {
    --color-navy: #193763;
    --color-teal: #b2d8da;
    --color-blue: #527a9a;
    --color-light: #f8f9fa;
    --color-white: #ffffff;
    --color-text: #333333;
    --color-text-light: #666666;
    --font-family: 'Lato', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--color-blue);
}

.btn-secondary {
    background: var(--color-teal);
    color: var(--color-navy);
}

.btn-secondary:hover {
    background: #9bc9cb;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-navy);
    color: var(--color-navy);
}

.btn-outline:hover {
    background: var(--color-navy);
    color: var(--color-white);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.1rem;
}

.btn-login {
    background: var(--color-blue);
    color: var(--color-white);
    padding: 8px 20px;
}

/* Header & Navigation */
.header {
    background: var(--color-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-navy);
}

.logo-tagline {
    font-size: 0.9rem;
    color: var(--color-blue);
    font-weight: 400;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    color: var(--color-text);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--color-blue);
}

.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-white);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

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

.dropdown-menu li a {
    display: block;
    padding: 12px 20px;
}

.dropdown-menu li a:hover {
    background: var(--color-light);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-navy);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-blue) 100%);
    color: var(--color-white);
    padding: 100px 20px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 900;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

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

/* Features Section */
.features {
    padding: 80px 20px;
    background: var(--color-light);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--color-navy);
    margin-bottom: 50px;
}

.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    color: var(--color-navy);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--color-text-light);
    margin-bottom: 25px;
}

/* CTA Section */
.cta {
    background: var(--color-teal);
    padding: 80px 20px;
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    color: var(--color-navy);
    margin-bottom: 20px;
}

.cta p {
    font-size: 1.1rem;
    color: var(--color-text);
    max-width: 600px;
    margin: 0 auto 30px;
}

/* About Preview */
.about-preview {
    padding: 80px 20px;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.about-text h2 {
    font-size: 2.5rem;
    color: var(--color-navy);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--color-text-light);
    margin-bottom: 15px;
}

.about-text .btn {
    margin-top: 15px;
}

.placeholder-image {
    background: var(--color-teal);
    height: 400px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-navy);
    font-weight: 600;
}

/* Footer */
.footer {
    background: var(--color-navy);
    color: var(--color-white);
    padding: 60px 20px 20px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.8;
}

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

.footer-section ul li a {
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-section ul li a:hover {
    opacity: 1;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.social-links a {
    background: rgba(255, 255, 255, 0.1);
    padding: 10px 15px;
    border-radius: 5px;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: rgba(255, 255, 255, 0.2);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    margin-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

/* Scroll to Top */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--color-navy);
    color: var(--color-white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    font-size: 1.5rem;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--color-blue);
}

/* Flash Messages */
.flash-messages {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px;
}

.flash {
    padding: 15px 20px;
    border-radius: 5px;
    margin-bottom: 10px;
}

.flash-success {
    background: #d4edda;
    color: #155724;
}

.flash-info {
    background: #cce5ff;
    color: #004085;
}

.flash-error {
    background: #f8d7da;
    color: #721c24;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-blue) 100%);
    color: var(--color-white);
    padding: 60px 20px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
}

/* Content Sections */
.content-section {
    padding: 60px 20px;
}

.content-section:nth-child(even) {
    background: var(--color-light);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--color-navy);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

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

/* Responsive */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

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

    .dropdown-menu {
        position: static;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        padding-left: 20px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2rem;
    }
}