/* ==========================================================================
   EXPINO - Premium Website Styles
   ========================================================================== */

/* Variables */
:root {
    --clr-accent: #B1CCB9;
    --clr-accent-rgb: 177, 204, 185;
    --clr-dark: #31443a;
    --clr-dark-secondary: #466055;
    --clr-light: #f7faf8;
    --clr-ink: #1f2b24;
    --clr-surface: #ffffff;
    --clr-surface-soft: #eef4f0;
    
    --font-heading: 'Avenir Next', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    --font-body: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(20px);
}

/* Global resets & Typography */
body {
    font-family: var(--font-body);
    background-color: var(--clr-surface-soft);
    color: var(--clr-ink);
    overflow-x: hidden;
}

.font-heading { font-family: var(--font-heading); }
.font-body { font-family: var(--font-body); }
.fw-black { font-weight: 900; }
.tracking-wider { letter-spacing: 0.05em; }
.tracking-widest { letter-spacing: 0.2em; }
.lh-1 { line-height: 1.1 !important; }

/* Custom Colors & Utilities */
.text-accent { color: var(--clr-accent) !important; }
.bg-accent { background-color: var(--clr-accent) !important; }
.bg-dark { background-color: var(--clr-dark) !important; }
.bg-dark-secondary { background-color: var(--clr-dark-secondary) !important; }
.border-accent { border-color: var(--clr-accent) !important; }

.text-gradient {
    background: linear-gradient(135deg, #b1ccb9 0%, #6f8f7a 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-glow {
    text-shadow: 0 0 40px rgba(var(--clr-accent-rgb), 0.3);
}

.text-stroke {
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.5);
    color: transparent;
}

.mw-800 { max-width: 800px; }

/* Spacing */
.py-10 { padding-top: 8rem; padding-bottom: 8rem; }
.py-8 { padding-top: 5rem; padding-bottom: 5rem; }

/* Glassmorphism */
.bg-glass {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.bg-dark-glass {
    background: rgba(49, 68, 58, 0.78);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
}
.shadow-glass {
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}
.glass-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

/* Navbar */
.expino-navbar {
    padding-top: 1rem;
    padding-bottom: 1rem;
    background: rgba(255, 255, 255, 0.94);
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    border-bottom: 1px solid rgba(49, 68, 58, 0.08);
}
.expino-navbar.scrolled {
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    box-shadow: 0 10px 30px rgba(49, 68, 58, 0.12);
    border-bottom: 1px solid rgba(49, 68, 58, 0.08);
}
.navbar-brand {
    font-size: 1.5rem;
    letter-spacing: 1px;
    color: var(--clr-ink) !important;
}
.navbar-logo {
    height: 86px;
    width: auto;
    display: block;
}
.nav-link {
    color: rgba(31, 43, 36, 0.82) !important;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}
.nav-link:hover, .nav-link.active {
    color: var(--clr-accent) !important;
}

/* Buttons */
.btn-accent {
    background: var(--clr-accent);
    color: var(--clr-ink);
    border: none;
    transition: all 0.3s ease;
}
.btn-accent:hover {
    background: #d4e3d8;
    color: var(--clr-ink);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(var(--clr-accent-rgb), 0.35);
}
.shadow-accent {
    box-shadow: 0 10px 30px rgba(var(--clr-accent-rgb), 0.2);
}
.shadow-accent-subtle {
    box-shadow: 0 0 40px rgba(var(--clr-accent-rgb), 0.05);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(10px);
    color: white;
}
.btn-glass:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-color: white;
    transform: translateY(-2px);
}

.glow-hover {
    position: relative;
    overflow: hidden;
}
.glow-hover::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 ease, height 0.6s ease;
}
.glow-hover:hover::after {
    width: 300px;
    height: 300px;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
}
.hero-bg {
    background: url('https://images.pexels.com/photos/159397/solar-panel-array-power-sun-electricity-159397.jpeg?auto=compress&cs=tinysrgb&w=1920&q=80') center/cover no-repeat;
    filter: brightness(0.68) grayscale(12%);
    transform: scale(1.05);
    animation: slowZoom 20s infinite alternate linear;
}
@keyframes slowZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}
.hero-overlay {
    background: linear-gradient(90deg, rgba(49, 68, 58, 0.92) 0%, rgba(49, 68, 58, 0.7) 52%, rgba(177, 204, 185, 0.12) 100%);
}

.pulse-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    box-shadow: 0 0 0 0 rgba(var(--clr-accent-rgb), 0.7);
    animation: pulse 1.5s infinite;
}
@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(var(--clr-accent-rgb), 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(var(--clr-accent-rgb), 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(var(--clr-accent-rgb), 0); }
}

.bounce {
    animation: bounce 2s infinite;
}
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-15px); }
    60% { transform: translateY(-7px); }
}


/* Abstract Lines & Orbs */
.electrical-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(177,204,185,0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(177,204,185,0.08) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 0;
}
.grid-overlay {
    background-image: radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 30px 30px;
}
.orb-glow {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(var(--clr-accent-rgb), 0.15) 0%, transparent 70%);
}

/* Specialization Cards */
.transition-hover {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid transparent;
}
.transition-hover:hover, .transition-hover.active-glow {
    background: rgba(177, 204, 185, 0.1);
    border-color: rgba(var(--clr-accent-rgb), 0.3);
    transform: translateX(10px);
    box-shadow: -10px 10px 30px rgba(49, 68, 58, 0.2);
}
.transition-hover:hover h4 i {
    transform: rotate(15deg) scale(1.1);
    transition: 0.3s;
}

/* Services Cards */
.service-card {
    transition: all 0.5s ease;
    cursor: pointer;
}
.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 255, 255, 0.2) !important;
}
.service-card:hover .service-bg {
    opacity: 0.4;
    transform: scale(1.05);
}
.service-card:hover .service-overlay {
    background: linear-gradient(to top, rgba(49, 68, 58, 0.88) 20%, transparent 100%);
}
.service-card:hover .icon-wrapper {
    transform: scale(1.1) translateY(-5px);
    text-shadow: 0 0 20px rgba(var(--clr-accent-rgb), 0.5);
}
.icon-wrapper {
    transition: all 0.4s ease;
}
.link-arrow {
    transition: all 0.3s ease;
}
.service-card:hover .link-arrow {
    letter-spacing: 1px;
}
.service-card:hover .link-arrow i {
    transform: translateX(5px);
}

/* Marquee / Auto-Scroll Text */
.marquee-section {
    background: var(--clr-accent);
}
.marquee-content {
    white-space: nowrap;
    animation: marquee 20s linear infinite;
    width: max-content;
}
.marquee-content .text-stroke {
    -webkit-text-stroke: 1px rgba(0, 0, 0, 0.8);
    color: transparent;
}
.marquee-content span {
    color: #000;
}
@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Testimonials */
.testimonial-card {
    transition: transform 0.4s ease;
}
.testimonial-card:hover {
    transform: translateY(-10px);
    border-color: rgba(var(--clr-accent-rgb), 0.3) !important;
}

.cta-section {
    background: var(--clr-accent) !important;
}

.main-footer {
    background: var(--clr-surface);
    color: var(--clr-ink);
}

.main-footer .text-white,
.main-footer h6,
.main-footer .navbar-brand {
    color: var(--clr-ink) !important;
}

.main-footer .text-light {
    color: rgba(31, 43, 36, 0.72) !important;
}

.main-footer hr {
    border-color: rgba(49, 68, 58, 0.14) !important;
}

.social-icon {
    width: 48px;
    height: 48px;
    background: var(--clr-surface-soft);
    border: 1px solid rgba(49, 68, 58, 0.08);
    color: var(--clr-ink) !important;
}

.social-icon:hover {
    background: var(--clr-accent);
    color: var(--clr-ink) !important;
    transform: translateY(-2px);
}

.footer-logo {
    height: 64px;
    width: auto;
    display: inline-block;
}

/* Utilities */
.filter-contrast { filter: contrast(1.1); }
.transition-all { transition: all 0.3s ease; }
.transition-hover-accent:hover { color: var(--clr-accent) !important; opacity: 1 !important; }

/* Responsive adjustments */
@media (max-width: 991px) {
    .display-1 { font-size: 3.5rem; }
    .display-3 { font-size: 2.5rem; }
    .display-4 { font-size: 2.2rem; }
    .hero-bg { filter: brightness(0.4); }
    .hero-overlay { background: linear-gradient(to top, var(--clr-dark) 0%, transparent 100%); }
    .expino-navbar { background: rgba(255, 255, 255, 0.98); backdrop-filter: none; padding-bottom: 1rem; }
    .navbar-collapse {
        background: rgba(255, 255, 255, 0.98);
        padding: 1rem;
        border-radius: 1rem;
        margin-top: 1rem;
        border: 1px solid rgba(49, 68, 58, 0.08);
        box-shadow: 0 16px 32px rgba(49, 68, 58, 0.12);
    }
}
@media (max-width: 576px) {
    .display-1 { font-size: 2.5rem; }
    .py-10 { padding-top: 5rem; padding-bottom: 5rem; }
}