/* General Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
}

/* Hero Section */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    color: white;
    margin-top: -1.5rem;
    overflow: hidden;
    perspective: 1000px;
}

.hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out, transform 0.5s ease-out;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transform-style: preserve-3d;
}

.hero-slide.active {
    opacity: 1;
    transform: translateZ(0);
}

.hero-slide:not(.active) {
    transform: translateZ(-100px);
}

.hero-slide:nth-child(1) {
    background-image: url('../images/ai/hero-1.jpg');
}

.hero-slide:nth-child(2) {
    background-image: url('../images/ai/hero-2.jpg');
}

.hero-slide:nth-child(3) {
    background-image: url('../images/ai/hero-3.jpg');
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.7) 100%);
    z-index: 1;
}

.hero-slide::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 10%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 10%),
        linear-gradient(45deg, transparent 48%, rgba(255, 255, 255, 0.05) 50%, transparent 52%);
    background-size: 100% 100%, 100% 100%, 30px 30px;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding-top: 150px;
    transition: transform 0.2s ease-out;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease-out forwards;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-title .char {
    display: inline-block;
    opacity: 0;
    transform: translateY(30px);
    animation: charAnimation 0.5s forwards;
}

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

.hero-description {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease-out 0.3s forwards;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
}

.hero-cta {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease-out 0.6s forwards;
}

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

.slider-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: 10px;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.slider-dot.active {
    background: #fff;
    transform: scale(1.2);
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    color: white;
    text-align: center;
    animation: bounce 2s infinite;
}

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

/* Service Cards */
.service-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.service-icon {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.service-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.service-card:hover .service-icon img {
    transform: scale(1.1);
}

.service-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.service-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.service-content p {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    flex-grow: 1;
}

/* 3D Model Viewer */
.model-viewer {
    width: 100%;
    height: 400px;
    background: #f8f9fa;
    border-radius: 10px;
    margin: 20px 0;
}

/* AI Generated Content */
.ai-image {
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.ai-image:hover {
    transform: scale(1.05);
}

/* Tender Cards */
.tender-card {
    border: none;
    border-radius: 10px;
    transition: all 0.3s ease;
    margin-bottom: 20px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
}

.tender-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    border: none;
    padding: 12px 30px;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 86, 179, 0.3);
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: white;
    padding: 50px 0 20px;
    margin-top: auto;
}

footer a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #007bff;
    text-decoration: none;
}

/* Animations */
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.float-animation {
    animation: float 6s ease-in-out infinite;
}

.fade-in {
    animation: fadeIn 1s ease-out forwards;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 60, 114, 0.1), rgba(42, 82, 152, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.service-card:hover::before {
    opacity: 1;
}

/* Statistics Animation */
.stat-number {
    display: inline-block;
    opacity: 0;
    transform: translateY(20px);
}

.stat-number.visible {
    animation: fadeIn 1s ease-out forwards;
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        padding: 100px 0;
    }
    
    .hero-section h1 {
        font-size: 2.5rem;
    }

    .hero-section .ai-animation {
        width: 200px;
        height: 200px;
        right: 20px;
    }
}

/* Loading Animations */
.loading-animation {
    width: 100%;
    height: 200px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 10px;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #475569;
    --accent-color: #3b82f6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
}

.text-primary {
    color: var(--primary-color) !important;
}

.text-success {
    color: var(--success-color) !important;
}

.text-info {
    color: var(--info-color) !important;
}

.service-card i {
    color: var(--primary-color);
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background-color: var(--primary-color);
    z-index: 1000;
    transition: width 0.2s ease-out;
}

/* Button Hover Effects */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::after {
    width: 300%;
    height: 300%;
}

/* Animated background elements */
.hero-slide .animated-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.hero-slide .animated-bg span {
    position: absolute;
    display: block;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.1);
    animation: float 15s linear infinite;
    border-radius: 50%;
}

.hero-slide .animated-bg span:nth-child(1) {
    left: 10%;
    width: 80px;
    height: 80px;
    animation-delay: 0s;
}

.hero-slide .animated-bg span:nth-child(2) {
    left: 70%;
    width: 20px;
    height: 20px;
    animation-delay: 2s;
    animation-duration: 12s;
}

.hero-slide .animated-bg span:nth-child(3) {
    left: 40%;
    width: 40px;
    height: 40px;
    animation-delay: 4s;
}

.hero-slide .animated-bg span:nth-child(4) {
    left: 65%;
    width: 30px;
    height: 30px;
    animation-delay: 0s;
    animation-duration: 18s;
}

.hero-slide .animated-bg span:nth-child(5) {
    left: 75%;
    width: 50px;
    height: 50px;
    animation-delay: 0s;
}

.hero-slide .animated-bg span:nth-child(6) {
    left: 35%;
    width: 25px;
    height: 25px;
    animation-delay: 3s;
}

.hero-slide .animated-bg span:nth-child(7) {
    left: 50%;
    width: 80px;
    height: 80px;
    animation-delay: 7s;
}

.hero-slide .animated-bg span:nth-child(8) {
    left: 20%;
    width: 15px;
    height: 15px;
    animation-delay: 15s;
    animation-duration: 45s;
}

.hero-slide .animated-bg span:nth-child(9) {
    left: 85%;
    width: 50px;
    height: 50px;
    animation-delay: 2s;
    animation-duration: 35s;
}

.hero-slide .animated-bg span:nth-child(10) {
    left: 50%;
    width: 30px;
    height: 30px;
    animation-delay: 0s;
    animation-duration: 11s;
}

@keyframes float {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
        border-radius: 0;
    }
    100% {
        transform: translateY(-1000px) rotate(720deg);
        opacity: 0;
        border-radius: 50%;
    }
}