/* ====================================
   UEST - Uzina Energie Solară Timișoara
   CSS Principal - Design Modern Responsive
   
   Creat de: Cristian Tundrea
   © 2026 Uzina Energie Solară Timișoara
   ==================================== */

/* === VARIABILE CSS === */
:root {
    --primary-color: #00cc66;
    --secondary-color: #0066cc;
    --accent-color: #ff6600;
    --dark-color: #1a1a1a;
    --light-color: #f8f9fa;
    --text-color: #333;
    --white: #ffffff;
    --shadow: 0 2px 15px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

/* === RESET & BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

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

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

/* === HEADER === */
header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

header.scrolled {
    padding: 0.5rem 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.logo img {
    height: 50px;
    max-width: 105%;
}

/* === NAVIGATION === */
nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 0.8rem;
    border-radius: 5px;
    transition: var(--transition);
    white-space: nowrap;
    font-size: 0.95rem;
}

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

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

/* === HERO SECTION === */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 6rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

/* === BUTTONS === */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: transparent;
    border-color: var(--white);
    color: var(--white);
}

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

/* === SECTIONS === */
section {
    padding: 4rem 2rem;
}

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

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

.section-title h2 {
    font-size: 2.5rem;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.section-title p {
    color: #666;
    font-size: 1.1rem;
}

/* === CARDS === */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: var(--white);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

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

.card-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.card p {
    color: #666;
    line-height: 1.8;
}

/* === STATS === */
.stats {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* === MAP SECTION === */
.map-container {
    width: 100%;
    height: 600px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

#map {
    width: 100%;
    height: 100%;
}

/* === STATIONS LIST === */
.stations-list {
    margin-top: 3rem;
}

.station-item {
    background: var(--white);
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: var(--transition);
}

.station-item:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.station-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    min-width: 60px;
    text-align: center;
}

.station-info h3 {
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.station-info p {
    color: #666;
    font-size: 0.95rem;
}

.station-status {
    margin-left: auto;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.status-available {
    background: #d4edda;
    color: #155724;
}

.status-occupied {
    background: #fff3cd;
    color: #856404;
}

/* === TIMELINE === */
.timeline {
    position: relative;
    padding: 2rem 0;
}

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

.timeline-item {
    display: flex;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-content {
    width: 45%;
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 30px;
    background: var(--primary-color);
    border: 4px solid var(--white);
    border-radius: 50%;
    box-shadow: var(--shadow);
}

/* === FOOTER === */
footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 3rem 2rem 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.6);
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease;
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        box-shadow: var(--shadow);
    }
    
    nav.active {
        display: block;
    }
    
    nav ul {
        flex-direction: column;
        gap: 0;
        padding: 1rem;
    }
    
    nav a {
        display: block;
        padding: 1rem;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        flex-direction: column !important;
    }
    
    .timeline-content {
        width: 100%;
        margin-left: 60px;
    }
    
    .timeline-marker {
        left: 30px;
    }
    
    .station-item {
        flex-direction: column;
        text-align: center;
    }
    
    .station-status {
        margin-left: 0;
        margin-top: 1rem;
    }
}

/* === UTILITY CLASSES === */
.text-center { text-align: center; }
.text-primary { color: var(--primary-color); }
.bg-light { background: var(--light-color); }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }