/* 
    3DCONSOLUTIONS LLP - Premium Dark Theme 
*/

:root {
    /* Color Palette */
    --bg-dark: #07090f;
    --bg-surface: rgba(20, 25, 35, 0.6);
    --bg-surface-hover: rgba(30, 38, 52, 0.8);
    --text-main: #d1d5db;
    --text-heading: #ffffff;
    --accent-orange: #ff6b00;
    --accent-orange-glow: rgba(255, 107, 0, 0.3);
    --accent-blue: #00d2ff;
    --accent-blue-glow: rgba(0, 210, 255, 0.3);
    --border-color: rgba(255, 255, 255, 0.08);

    /* Typography */
    --font-sans: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;

    /* Effects */
    --glass-blur: blur(12px);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
}

body {
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-heading);
    line-height: 1.2;
}

p {
    margin-bottom: 1rem;
}

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

ul {
    list-style: none;
}

/* Utility Classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
    position: relative;
    z-index: 1;
}

.dark-section {
    background: linear-gradient(180deg, rgba(7,9,15,1) 0%, rgba(13,17,26,1) 50%, rgba(7,9,15,1) 100%);
}

.glass-card {
    background: var(--bg-surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    transition: var(--transition);
}

.glass-card:hover {
    transform: translateY(-5px);
    background: var(--bg-surface-hover);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 10px 30px -10px rgba(0,0,0,0.5);
}

.highlight {
    background: linear-gradient(90deg, var(--accent-orange), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-orange), #d95a00);
    color: white;
    box-shadow: 0 4px 15px var(--accent-orange-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-orange-glow);
    background: linear-gradient(135deg, #ff7a1a, #e66000);
}

.btn-secondary {
    background: transparent;
    color: var(--text-heading);
    border: 1px solid var(--border-color);
    backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--text-heading);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1.2rem 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(7, 9, 15, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    padding: 0.8rem 0;
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--text-heading);
}

.logo-3d { color: var(--accent-orange); }
.logo-con { color: #e6b800; /* Dark Yellow */ }

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a:not(.btn-primary) {
    font-weight: 500;
    font-size: 0.95rem;
}

.nav-links a:not(.btn-primary):hover {
    color: var(--accent-blue);
}

.mobile-menu-btn {
    display: none;
    cursor: pointer;
    color: var(--text-heading);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('assets/hero_3d_concrete.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(7,9,15,0.7) 0%, rgba(7,9,15,0.95) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    padding: 0 2rem;
}

.hero h1 {
    font-size: clamp(3rem, 5vw, 4.5rem);
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-main);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    z-index: 1;
    opacity: 0.7;
    animation: bounce 2s infinite;
}

.scroll-indicator p {
    font-size: 0.8rem;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.mouse {
    width: 24px;
    height: 36px;
    border: 2px solid var(--text-main);
    border-radius: 12px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 6px;
    background: var(--text-main);
    border-radius: 2px;
    animation: scroll-wheel 1.5s infinite;
}

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

@keyframes scroll-wheel {
    0% { top: 6px; opacity: 1; }
    100% { top: 18px; opacity: 0; }
}

/* Section Header */
.section-header {
    margin-bottom: 4rem;
    text-align: center;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.accent-line {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-orange), var(--accent-blue));
    margin: 0 auto;
    border-radius: 2px;
}

.subtitle {
    margin-top: 1rem;
    font-size: 1.1rem;
    color: var(--text-main);
}

/* About Section */
.about-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.about-lead {
    text-align: center;
    border-bottom: 2px solid var(--accent-blue);
    position: relative;
}

.about-lead::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 30%;
    height: 2px;
    background: var(--accent-orange);
    box-shadow: 0 0 10px var(--accent-orange-glow);
}

.highlight-text {
    font-size: 1.4rem;
    color: var(--text-heading);
    font-weight: 500;
    max-width: 900px;
    margin: 0 auto;
}

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

.about-item {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.about-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.about-icon i {
    color: var(--accent-orange);
    width: 28px;
    height: 28px;
}

.about-item h3 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.about-item p {
    font-size: 0.95rem;
    color: var(--text-main);
}

/* Vision & Mission */
.vision-banner {
    text-align: center;
    padding: 4rem 2rem;
    margin-bottom: 6rem;
    position: relative;
    overflow: hidden;
}

.vision-banner::before {
    content: '';
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 300px;
    background: var(--accent-blue-glow);
    filter: blur(80px);
    border-radius: 50%;
    z-index: 0;
}

.vision-banner .vm-icon {
    margin: 0 auto 1.5rem auto;
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.1);
}

.vision-banner h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.vision-text {
    font-size: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    color: var(--text-heading);
    font-weight: 300;
    line-height: 1.6;
}

.mission-section {
    position: relative;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.mission-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem;
    gap: 1rem;
    border-top: 3px solid transparent;
    transition: var(--transition);
}

.mission-card:hover {
    border-top-color: var(--accent-orange);
    transform: translateY(-5px);
}

.mission-card:nth-child(even):hover {
    border-top-color: var(--accent-blue);
}

.mission-card i {
    color: var(--accent-blue);
    width: 32px;
    height: 32px;
}

.mission-card:nth-child(odd) i {
    color: var(--accent-orange);
}

.mission-card p {
    margin: 0;
    font-size: 1.05rem;
    color: var(--text-heading);
    font-weight: 500;
}

/* Objectives Section */
.objectives-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.obj-card {
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.obj-card:hover .obj-number {
    color: rgba(255, 255, 255, 0.1);
    transform: scale(1.1);
}

.obj-number {
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 4rem;
    font-family: var(--font-heading);
    font-weight: 800;
    color: rgba(255, 255, 255, 0.03);
    line-height: 1;
    transition: var(--transition);
    z-index: 0;
}

.obj-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
    color: var(--accent-blue);
}

.obj-card p {
    font-size: 0.95rem;
    margin: 0;
    position: relative;
    z-index: 1;
}

/* Footer */
.footer {
    background: #040508;
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand p {
    margin-top: 1rem;
    font-size: 0.9rem;
    max-width: 300px;
}

.footer h3 {
    color: var(--text-heading);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.footer-links ul, .footer-contact ul {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-links a:hover {
    color: var(--accent-orange);
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 0.95rem;
}

.footer-contact i {
    width: 18px;
    height: 18px;
    color: var(--accent-blue);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.85rem;
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* Responsive Design */
@media (max-width: 992px) {
    .objectives-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero h1 {
        font-size: clamp(2.5rem, 6vw, 4rem);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.25rem;
    }

    .section {
        padding: 4rem 0;
    }

    .glass-card {
        padding: 1.5rem;
    }

    .hero {
        min-height: 0;
        padding-top: 140px;
        padding-bottom: 80px;
    }

    .hero h1 {
        font-size: clamp(2rem, 8vw, 2.5rem);
        margin-bottom: 1rem;
    }

    .hero p {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
        gap: 1rem;
    }

    .scroll-indicator {
        display: none;
    }

    .section-header {
        margin-bottom: 2.5rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .highlight-text {
        font-size: 1.1rem;
    }

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

    .vision-banner {
        padding: 2.5rem 1.5rem;
        margin-bottom: 4rem;
    }

    .vision-text {
        font-size: 1.1rem;
    }

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

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(7, 9, 15, 0.98);
        backdrop-filter: blur(16px);
        padding: 1.5rem 0;
        flex-direction: column;
        text-align: center;
        border-bottom: 1px solid var(--border-color);
        gap: 1.5rem;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}