/* =====================================================
   Suknesh Techcenter LLP - Premium Corporate Style
===================================================== */

:root {
    --primary-blue: #00778B;
    --engineering-green: #168A4A;
    --gold-accent: #F2B705;
    --dark: #102027;
    --text: #4b5563;
    --light: #f7fafc;
    --white: #ffffff;
    --shadow-soft: 0 15px 45px rgba(16, 32, 39, 0.10);
    --shadow-hover: 0 24px 60px rgba(0, 119, 139, 0.18);
    --radius-lg: 24px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Poppins", Arial, sans-serif;
    color: var(--text);
    background: var(--white);
    line-height: 1.7;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--dark);
    line-height: 1.25;
}

.text-white h1, .text-white h2, .text-white h3, .text-white h4, .text-white h5, .text-white h6 {
    color: inherit;
}

a {
    color: var(--primary-blue);
}

.navbar {
    padding: 14px 0;
}

@keyframes spin3D {
    from { transform: rotateY(0deg); }
    to { transform: rotateY(360deg); }
}

.navbar-brand img {
    max-height: 70px;
    object-fit: contain;
}

.logo-spinner {
    position: relative;
    width: 70px;
    height: 70px;
    transform-style: preserve-3d;
    animation: spin3D 6s linear infinite;
}

.logo-spinner img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    backface-visibility: hidden;
}

.logo-spinner .logo-back {
    transform: rotateY(180deg);
}

.nav-link {
    font-weight: 600;
    color: var(--dark) !important;
    margin: 0 4px;
}

.nav-link:hover,
.nav-link.active {
    color: #f26522 !important;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), #00596b);
    border: none;
    box-shadow: 0 10px 25px rgba(0,119,139,0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-success {
    background: linear-gradient(135deg, var(--engineering-green), #0c6f38);
    border: none;
}

.btn-warning {
    background: var(--gold-accent);
    border: none;
    color: #111 !important;
}

section {
    position: relative;
}

.hero-section {
    background:
        radial-gradient(circle at top right, rgba(22,138,74,.16), transparent 35%),
        radial-gradient(circle at bottom left, rgba(0,119,139,.16), transparent 35%),
        linear-gradient(135deg, #ffffff 0%, #eef8fa 100%);
}

.hero-logo {
    max-width: 520px;
    filter: drop-shadow(0 30px 50px rgba(0,0,0,.12));
}

.badge {
    font-weight: 600;
    letter-spacing: .3px;
}

.card {
    border-radius: var(--radius-lg);
    transition: all .28s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: "";
    position: absolute;
    top: 0;
    left: -150%;
    width: 50%;
    height: 100%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.4) 50%, rgba(255,255,255,0) 100%);
    transform: skewX(-25deg);
    transition: all 0.75s ease;
    z-index: 1;
    pointer-events: none;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover) !important;
}

.card:hover::before {
    animation: glimmer 0.8s ease-in-out forwards;
}

@keyframes glimmer {
    0% { left: -100%; }
    100% { left: 200%; }
}

.shadow,
.shadow-sm,
.shadow-lg {
    box-shadow: var(--shadow-soft) !important;
}

.bg-primary {
    background: var(--primary-blue) !important;
}

.bg-success {
    background: var(--engineering-green) !important;
}

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

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

.text-warning {
    color: var(--gold-accent) !important;
}

#loader {
    position: fixed;
    inset: 0;
    background: #ffffff;
    z-index: 9999;
    display: grid;
    place-items: center;
    transition: opacity .4s ease, visibility .4s ease;
}

#loader.hide {
    opacity: 0;
    visibility: hidden;
}

.loader-content img {
    animation: pulseLogo 1.8s infinite ease-in-out;
}

.ratio video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.footer-section h4,
.footer-section h5 {
    color: #ffffff;
}

.footer-section {
    background:
        linear-gradient(135deg, #071b22, #0a3d46 55%, #062027) !important;
}

.footer-section a:hover {
    color: var(--gold-accent) !important;
}

#backToTop {
    position: fixed;
    right: 22px;
    bottom: 22px;
    width: 46px;
    height: 46px;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 900;
}

#backToTop.show {
    display: inline-flex;
}

input.form-control {
    border-radius: 999px 0 0 999px;
}

.input-group .btn {
    border-radius: 0 999px 999px 0;
}

/* Mixed Video Crossfade Effect */
.video-crossfade {
    position: relative;
    width: 100%;
    height: 100%;
    background: #000;
}
.video-crossfade img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    animation: fadeAnimation 12s infinite ease-in-out;
}
.video-crossfade img:nth-child(1) { animation-delay: 0s; }
.video-crossfade img:nth-child(2) { animation-delay: 4s; }
.video-crossfade img:nth-child(3) { animation-delay: 8s; }

@keyframes fadeAnimation {
    0%   { opacity: 0; transform: scale(1.05); }
    10%  { opacity: 1; transform: scale(1); }
    33%  { opacity: 1; transform: scale(1); }
    43%  { opacity: 0; transform: scale(1.05); }
    100% { opacity: 0; transform: scale(1.05); }
}

/* Navbar Interaction Effects */
.navbar-brand {
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), text-shadow 0.2s ease;
    display: inline-block;
}
.navbar-brand:active {
    transform: scale(0.9) rotate(-2deg);
    text-shadow: 0 0 15px rgba(25, 135, 84, 0.6);
}

.nav-link {
    position: relative;
    transition: color 0.3s ease, transform 0.1s ease;
}
.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0px;
    left: 50%;
    background-color: #f26522;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}
.nav-link:hover::after,
.nav-link.active::after {
    width: calc(100% - 1rem);
}
.nav-link:active {
    transform: scale(0.92);
}

/* 3D Hover Animations for Vision/Mission/Core Values */
.card-3d-hover {
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.5s ease !important;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.card-3d-hover:hover {
    transform: rotateX(8deg) rotateY(-8deg) scale3d(1.05, 1.05, 1.05) !important;
    box-shadow: 20px 20px 40px rgba(0,0,0,0.15) !important;
    z-index: 10;
}

.card-3d-hover i {
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.card-3d-hover:hover i {
    transform: translateZ(50px) scale(1.2);
}

/* 3D and 2D Animations for Popup Modals */
.modal.modal-3d.fade .modal-dialog {
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.6s ease;
    transform: perspective(1200px) rotateX(-30deg) rotateY(20deg) scale(0.7) translateZ(-100px);
    opacity: 0;
}

.modal.modal-3d.show .modal-dialog {
    transform: perspective(1200px) rotateX(0deg) rotateY(0deg) scale(1) translateZ(0);
    opacity: 1;
}

/* Beautiful new style for the modal content */
.modal.modal-3d .modal-content {
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.2), 0 0 40px rgba(0, 0, 0, 0.05) !important;
    overflow: hidden;
    background: linear-gradient(145deg, #ffffff, #f3f4f6);
}

.modal.modal-3d .modal-header {
    background: linear-gradient(90deg, #f8f9fa, #ffffff);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.modal.modal-3d .modal-body img {
    transition: transform 0.5s ease;
}

.modal.modal-3d.show .modal-body img {
    animation: popImage 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes popImage {
    0% { transform: scale(0.8) translateY(20px); opacity: 0; }
    100% { transform: scale(1) translateY(0); opacity: 1; }
}

/* Force Modal Size Reduction */
.modal.modal-3d .modal-dialog {
    max-width: 550px !important;
}

/* Prevent Background Scrolling when Modal is Open */
body.modal-open {
    overflow: hidden !important;
    height: 100vh !important;
    touch-action: none;
}