/* 
 * Poly Solar Car Team Website
 * A modern, responsive website for the Polytechnic School Solar Car Team
 */

/* ===== Variables ===== */
:root {
    /* Colors */
    --primary-color: #0c3c60; /* Navy blue from logo */
    --secondary-color: #e68a30; /* Orange from logo */
    --accent-color: #e68a30;   /* Orange from logo */
    --text-dark: #333333;
    --text-light: #ffffff;
    --text-muted: #777777;
    --bg-white: #ffffff;
    --bg-light: #f5f8fa;
    --bg-dark: #0c3c60; /* Navy blue from logo */
    
    /* Gradients */
    --bg-gradient: linear-gradient(135deg, #0c3c60, #e68a30); /* Navy to orange gradient */
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    /* Sizes */
    --container-max: 1200px;
    --header-height: 80px;
    
    /* Border Radius */
    --border-radius: 8px;
    --border-radius-lg: 16px;
    
    /* Shadows */
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition: all 0.3s ease;
    
    /* Typography */
    --font-family: 'Roboto', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

ul {
    list-style: none;
}

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

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
    line-height: 1.3;
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
}

/* ===== Layout ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-padding {
    padding: var(--spacing-lg) 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.bg-dark {
    background-color: var(--bg-dark);
    color: var(--text-light);
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    background-color: var(--primary-color);
    color: var(--text-light);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

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

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

.btn-outline:hover {
    background-color: var(--text-light);
    color: var(--primary-color);
}

.hero-btns {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

@media (max-width: 576px) {
    .hero-btns {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .btn {
        width: 100%;
    }
}

/* ===== Header ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow);
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 1px;
}

.logo img {
    height: 60px;
    width: auto;
    max-width: none;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--text-dark);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

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

@media (max-width: 992px) {
    .mobile-nav-toggle {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: var(--header-height);
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: calc(100vh - var(--header-height));
        background-color: var(--bg-white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-links.active {
        right: 0;
    }
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    background: var(--bg-gradient);
    position: relative;
    color: var(--text-light);
}

.hero-content {
    max-width: 600px;
    padding: var(--spacing-lg) 0;
}

.hero-content h1 {
    margin-bottom: var(--spacing-md);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-light);
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-20px) translateX(-50%);
    }
    60% {
        transform: translateY(-10px) translateX(-50%);
    }
}

/* ===== Page Hero Section ===== */
.page-hero {
    padding: calc(var(--header-height) + var(--spacing-lg)) 0 var(--spacing-lg);
    background: var(--bg-gradient);
    color: var(--text-light);
    text-align: center;
}

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

.page-hero-content h1 {
    margin-bottom: var(--spacing-sm);
}

.page-hero-content p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* ===== Section Headers ===== */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
}

.underline {
    height: 4px;
    width: 60px;
    background: var(--primary-color);
    margin: var(--spacing-sm) auto var(--spacing-md);
}

/* ===== Features ===== */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.feature-card {
    background-color: var(--bg-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-img {
    height: 220px;
    overflow: hidden;
}

.feature-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.feature-card:hover .feature-img img {
    transform: scale(1.05);
}

.feature-content {
    padding: var(--spacing-md);
}

.feature-content h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

/* ===== About Content ===== */
.about-content {
    margin-top: var(--spacing-lg);
}

.car-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    align-items: center;
}

.car-image {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.spec-item {
    margin-bottom: var(--spacing-md);
}

.spec-item h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.spec-item i {
    font-size: 1.2rem;
}

@media (max-width: 992px) {
    .car-features {
        grid-template-columns: 1fr;
    }
    
    .car-image {
        margin-bottom: var(--spacing-md);
    }
}

/* ===== Timeline ===== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: var(--spacing-lg) auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background-color: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-md);
    padding-left: 50%;
}

.timeline-item:nth-child(even) {
    padding-left: 0;
    padding-right: 50%;
}

.timeline-content {
    position: relative;
    background-color: var(--bg-white);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow);
    margin-left: var(--spacing-md);
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 0;
    margin-right: var(--spacing-md);
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 20px;
    left: -10px;
    width: 20px;
    height: 20px;
    background-color: var(--bg-white);
    transform: rotate(45deg);
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: auto;
    right: -10px;
}

.timeline-item::after {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background-color: var(--accent-color);
    border: 4px solid var(--primary-color);
    border-radius: 50%;
}

.timeline-date {
    display: inline-block;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item, .timeline-item:nth-child(even) {
        padding-left: 60px;
        padding-right: 0;
    }
    
    .timeline-content, .timeline-item:nth-child(even) .timeline-content {
        margin-left: 0;
        margin-right: 0;
    }
    
    .timeline-content::before {
        left: -10px;
    }
    
    .timeline-item:nth-child(even) .timeline-content::before {
        left: -10px;
        right: auto;
    }
    
    .timeline-item::after {
        left: 20px;
    }
}

/* ===== Team Grid ===== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.team-member {
    background-color: var(--bg-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.member-img {
    height: 250px;
    overflow: hidden;
}

.member-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.team-member:hover .member-img img {
    transform: scale(1.05);
}

.member-info {
    padding: var(--spacing-md);
    text-align: center;
}

.member-info h3 {
    margin-bottom: 5px;
    color: var(--primary-color);
}

.member-info p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.member-social {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: var(--spacing-sm);
}

.member-social a {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-light);
    color: var(--primary-color);
    border-radius: 50%;
    transition: var(--transition);
}

.member-social a:hover {
    background-color: var(--primary-color);
    color: var(--text-light);
}

/* ===== Sponsors ===== */
.sponsors {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.sponsor-item {
    background-color: var(--bg-white);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.sponsor-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.sponsor-logo {
    width: 150px;
    height: 150px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sponsor-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.sponsor-item h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

/* ===== Contact Container ===== */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--text-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.contact-text h3 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.contact-form {
    background-color: var(--bg-white);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow);
}

.contact-form h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

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

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: var(--transition);
}

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

@media (max-width: 992px) {
    .contact-container {
        grid-template-columns: 1fr;
    }
}

/* ===== Footer ===== */
footer {
    background-color: var(--bg-dark);
    color: var(--text-light);
    padding: var(--spacing-lg) 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-column h3 {
    position: relative;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a, .footer-links li {
    color: var(--text-light);
    opacity: 0.8;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-links i {
    margin-right: 10px;
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: var(--spacing-sm);
}

.social-links a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    border-radius: 50%;
    transition: var(--transition);
}

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

.footer-bottom {
    padding: var(--spacing-md) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    opacity: 0.7;
    font-size: 0.9rem;
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s ease, transform 1s ease;
}

.fade-in.active {
    opacity: 1;
    transform: translateY(0);
}

/* CTA Section */
.cta {
    color: var(--text-light);
}

.cta .btn-outline:hover {
    color: var(--bg-dark);
}