/* Custom Styles for Transvale Energy SA */

:root {
    --primary-green: #1E5631;
    --primary-blue: #003366;
    --accent-orange: #E67E22;
    --accent-yellow: #F1C40F;
    --light-gray: #f8f9fa;
    --dark-gray: #343a40;
    --text-muted: #6c757d;
}

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

body {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
}

/* Navigation - Professional & Clean */
.navbar {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 1.2rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.03);
}

.navbar-brand {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    color: var(--primary-green) !important;
    transition: all 0.3s ease;
}

.brand-icon {
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.brand-name {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: -0.3px;
}

.brand-subtitle {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.3px;
}

.navbar-nav .nav-link {
    color: var(--dark-gray) !important;
    font-weight: 500;
    font-size: 0.85rem;
    margin: 0 0.5rem;
    padding: 0.4rem 0;
    position: relative;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-orange);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover {
    color: var(--primary-green) !important;
}

.navbar-nav .nav-link:hover::after {
    width: 100%;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    padding: 0.8rem 0;
}

/* Hero Section */
.hero-section {
    height: 100vh;
    background: linear-gradient(rgba(0, 51, 102, 0.7), rgba(30, 86, 49, 0.7)), 
                url('https://images.unsplash.com/photo-1508514177221-188b1cf16e9d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    position: relative;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(30, 86, 49, 0.8), rgba(0, 51, 102, 0.8));
}

.hero-section h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-section .lead {
    font-size: 1.3rem;
    margin-bottom: 2rem;
}

.btn-primary {
    background: var(--accent-orange);
    border-color: var(--accent-orange);
    font-weight: 600;
    padding: 0.8rem 2rem;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: #d35400;
    border-color: #d35400;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Section Titles */
.section-title {
    color: var(--primary-green);
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--accent-orange);
}

.text-center .section-title::after {
    left: 50%;
    transform: translateX(-50%);
}

/* Activity Cards */
.activity-card {
    background: white;
    border-radius: 15px;
    padding: 2.5rem 1.5rem;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(30, 86, 49, 0.1);
}

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

.activity-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.activity-card h4 {
    color: var(--primary-green);
    margin-bottom: 1rem;
}

/* Stats */
.stat-item h3 {
    color: var(--primary-blue);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: var(--text-muted);
    margin-bottom: 0;
}

/* Sustainability */
.sustainability-item {
    text-align: center;
    margin-bottom: 2rem;
}

.sustainability-item i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.sustainability-item h5 {
    color: var(--primary-green);
    margin-bottom: 0.5rem;
}

/* Timeline */
.vision-timeline {
    position: relative;
    padding-left: 2rem;
}

.vision-timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-green);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 0.5rem;
    width: 15px;
    height: 15px;
    background: var(--accent-orange);
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: 0 0 0 3px var(--primary-green);
}

.timeline-content h4 {
    color: var(--primary-green);
    margin-bottom: 0.5rem;
}

/* Social Impact Section */
.social-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(30, 86, 49, 0.1);
    position: relative;
    overflow: hidden;
}

.social-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-green), var(--accent-orange));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

.social-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.social-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
    transition: all 0.3s ease;
}

.social-card:hover .social-icon {
    transform: scale(1.1) rotate(5deg);
}

.impact-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-green);
    margin: 1rem 0 0.5rem;
    font-family: 'Montserrat', sans-serif;
}

.social-impact-list {
    margin-top: 2rem;
}

.impact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(30, 86, 49, 0.05);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.impact-item:hover {
    background: rgba(30, 86, 49, 0.08);
    transform: translateX(5px);
}

.impact-icon {
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1.5rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

/* Investor Cards */
.investor-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.investor-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-orange));
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.investor-card:hover::after {
    transform: translateX(0);
}

.investor-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.investor-card i {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.investor-card:hover i {
    transform: scale(1.1);
    color: var(--primary-green);
}

/* Career Cards */
.career-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.career-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* Contact Form */
.contact-form .form-control {
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 0.8rem 1rem;
    transition: all 0.3s ease;
}

.contact-form .form-control:focus {
    border-color: var(--primary-green);
    box-shadow: 0 0 0 0.2rem rgba(30, 86, 49, 0.25);
}

/* Footer */
footer {
    background: var(--primary-blue) !important;
}

.social-links a {
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--accent-yellow) !important;
}

/* Advanced Animations */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.animate-fade-up.animate-delay-1 {
    animation-delay: 0.2s;
}

.animate-fade-up.animate-delay-2 {
    animation-delay: 0.4s;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

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

/* Floating Animation */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.float-animation {
    animation: float 3s ease-in-out infinite;
}

/* Pulse Animation */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.pulse-animation {
    animation: pulse 2s ease-in-out infinite;
}

/* Gradient Animation */
@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.gradient-animation {
    background: linear-gradient(-45deg, var(--primary-green), var(--primary-blue), var(--accent-orange));
    background-size: 200% 200%;
    animation: gradient 3s ease infinite;
}

/* Slide In Animation */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-left {
    animation: slideInLeft 0.8s ease forwards;
}

.slide-in-right {
    animation: slideInRight 0.8s ease forwards;
}

/* Glow Effect */
.glow-effect {
    box-shadow: 0 0 20px rgba(30, 86, 49, 0.3);
    transition: all 0.3s ease;
}

.glow-effect:hover {
    box-shadow: 0 0 30px rgba(30, 86, 49, 0.5);
}

/* Text Gradient Animation */
@keyframes textGradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.text-gradient {
    background: linear-gradient(45deg, var(--primary-green), var(--primary-blue));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: textGradient 3s ease infinite;
}

/* Rotating Border Effect */
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.rotating-border {
    position: relative;
    overflow: hidden;
}

.rotating-border::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary-green), var(--primary-blue), var(--accent-orange), var(--primary-green));
    border-radius: 20px;
    z-index: -1;
    animation: rotate 4s linear infinite;
}

/* Bounce Animation */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

.bounce-animation {
    animation: bounce 2s ease-in-out infinite;
}

/* Scale Animation */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.scale-in {
    animation: scaleIn 0.6s ease forwards;
}

/* Stagger Animation */
.stagger-item {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.stagger-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Hover 3D Effect */
.hover-3d {
    transition: all 0.3s ease;
    transform-style: preserve-3d;
}

.hover-3d:hover {
    transform: rotateY(5deg) rotateX(5deg) translateZ(10px);
}

/* Active Nav Link */
.navbar-nav .nav-link.active {
    color: var(--primary-green) !important;
    font-weight: 600;
}

.navbar-nav .nav-link.active::after {
    width: 100%;
}

/* Animation Classes */
.animate-on-scroll {
    animation: fadeUp 0.8s ease forwards;
}

/* Enhanced Back to Top Button */
.back-to-top {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue)) !important;
    border: none !important;
    transition: all 0.3s ease !important;
}

.back-to-top:hover {
    transform: scale(1.1) !important;
    box-shadow: 0 6px 25px rgba(30, 86, 49, 0.4) !important;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .hero-section .lead {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .activity-card {
        margin-bottom: 2rem;
    }
    
    .vision-timeline {
        padding-left: 1.5rem;
    }
    
    .timeline-marker {
        left: -1.5rem;
    }
}

@media (max-width: 576px) {
    .hero-section {
        height: 80vh;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .btn-primary {
        padding: 0.7rem 1.5rem;
        font-size: 1rem;
    }
}

/* Performance Optimizations */
img {
    max-width: 100%;
    height: auto;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus Styles */
.btn:focus,
.form-control:focus,
.navbar-toggler:focus {
    outline: 2px solid var(--accent-yellow);
    outline-offset: 2px;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}