/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-dark: #1e293b;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-900: #0f172a;
    --color-white: #ffffff;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s ease;
}

/* ========================================
   Base Styles
   ======================================== */

/* Normalize Bootstrap utility to match body color */
.text-muted {
    color: var(--color-gray-700) !important;
}

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

body {
    font-family: var(--font-family);
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--color-gray-700);
    line-height: 1.7;
    overflow-x: hidden;
    background: var(--color-white);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-gray-900);
    font-weight: 600;
    line-height: 1.3;
}

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

a:hover {
    color: var(--color-primary-dark);
}

.py-6 {
    padding-top: 5rem;
    padding-bottom: 5rem;
}

/* ========================================
   Buttons
   ======================================== */
.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    border-radius: var(--radius-sm);
    font-weight: 500;
    padding: 0.75rem 2rem;
    transition: all var(--transition);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline-primary {
    border-radius: var(--radius-sm);
    font-weight: 500;
    padding: 0.75rem 2rem;
    transition: all var(--transition);
}

.btn-outline-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline-light {
    border-radius: var(--radius-sm);
    font-weight: 500;
    padding: 0.75rem 2rem;
    transition: all var(--transition);
}

.btn-outline-light:hover {
    transform: translateY(-1px);
}

.btn-light {
    border-radius: var(--radius-sm);
    font-weight: 500;
    padding: 0.75rem 2rem;
    color: var(--color-primary);
    transition: all var(--transition);
}

.btn-light:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    color: var(--color-primary-dark);
}

/* ========================================
   Navigation
   ======================================== */
.page-header {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    transition: all 0.35s ease;
}

.page-header .nav-link {
    color: var(--color-gray-700);
    font-size: 1.25rem;
    font-weight: 300;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.page-header .nav-link:hover,
.page-header .nav-link.active {
    color: var(--color-primary);
    background-color: rgba(37, 99, 235, 0.08);
}

.page-header.is-sticky {
    position: fixed;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    animation: slideDown 0.35s ease-out;
}

.page-header.is-sticky .nav-link {
    color: var(--color-gray-700);
}

.page-header.is-sticky .nav-link:hover,
.page-header.is-sticky .nav-link.active {
    color: var(--color-primary);
    background-color: rgba(37, 99, 235, 0.08);
}

.page-header.is-sticky #normal-logo {
    display: none;
}

.page-header.is-sticky #small-logo {
    display: block !important;
}

.page-header-solid {
    position: relative;
    background-color: var(--color-gray-50);
    border-bottom: 1px solid var(--color-gray-200);
}

.page-header-solid .nav-link {
    color: var(--color-gray-600);
}

.page-header-solid .nav-link:hover,
.page-header-solid .nav-link.active {
    color: var(--color-primary);
    background-color: rgba(37, 99, 235, 0.08);
}

@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

/* ========================================
   Hero Section — Light theme with neural network canvas
   ======================================== */
.hero-section {
    position: relative;
    background: linear-gradient(160deg, var(--color-white) 0%, #eef2ff 40%, #e0e7ff 70%, #dbeafe 100%);
    min-height: 100svh;
    display: flex;
    align-items: center;
    overflow: clip;
    padding-top: 5rem;
}

#neural-network {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.hero-section .container {
    z-index: 1;
}

.min-vh-75 {
    min-height: 75vh;
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 1.5rem;
    line-height: 1.15;
    text-shadow: 0 0 30px rgba(255,255,255,0.9), 0 0 60px rgba(255,255,255,0.5);
}

.hero-highlight {
    display: block;
    background: linear-gradient(90deg, var(--color-primary), #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(255,255,255,0.7));
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
    text-shadow: 0 0 20px rgba(255,255,255,0.85), 0 0 40px rgba(255,255,255,0.4);
}

/* Pill links to capabilities */
.hero-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 4rem;
    max-width: 490px;
    margin-left: auto;
    margin-right: auto;
}

.hero-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.82rem;
    font-weight: 500;
    padding: 0.35rem 0.9rem;
    border-radius: 100px;
    background: rgba(37, 99, 235, 0.07);
    color: var(--color-primary);
    border: 1px solid rgba(37, 99, 235, 0.12);
    transition: all var(--transition);
    text-decoration: none;
}

.hero-pill ion-icon {
    font-size: 0.95rem;
}

.hero-pill:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-gray-300);
    font-size: 2rem;
    animation: bounce 2s infinite;
    z-index: 1;
}

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

/* ========================================
   Section Styles
   ======================================== */
.section-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: 1rem;
}

/* ========================================
   Service Cards
   ======================================== */
.service-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius);
    padding: 2.5rem;
    transition: all var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
    color: var(--color-white);
}

.service-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
}

.service-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.service-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-gray-700);
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 1.3rem;
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
}

/* ========================================
   Capability Cards
   ======================================== */

.capability-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius);
    padding: 2rem;
    height: 100%;
    transition: all var(--transition);
}

.capability-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.capability-icon {
    width: 50px;
    height: 50px;
    background: rgba(37, 99, 235, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    font-size: 1.5rem;
    color: var(--color-primary);
}

.capability-card h4 {
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
}

.capability-card p {
    color: var(--color-gray-700);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.capability-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    background: var(--color-gray-100);
    color: var(--color-gray-500);
    border-radius: 100px;
}

/* ========================================
   Security Section — Light variant
   ======================================== */
.section-security {
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
}

.security-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0 0 0;
}

.security-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0;
    color: var(--color-gray-700);
}

.security-list li ion-icon {
    font-size: 1.4rem;
    color: var(--color-primary);
    flex-shrink: 0;
}

.security-visual {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 2rem auto;
}

.security-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(37, 99, 235, 0.1);
    animation: pulse-ring 3s ease-in-out infinite;
}

.ring-1 {
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    animation-delay: 0s;
}

.ring-2 {
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
    border-color: rgba(37, 99, 235, 0.18);
    animation-delay: 0.5s;
}

.ring-3 {
    width: 40%;
    height: 40%;
    top: 30%;
    left: 30%;
    border-color: rgba(37, 99, 235, 0.28);
    animation-delay: 1s;
}

.security-center-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 4rem;
    color: var(--color-primary);
}

@keyframes pulse-ring {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.7; }
}

/* ========================================
   Contact Page
   ======================================== */
.contact-header {
    background: linear-gradient(160deg, var(--color-gray-50) 0%, #eef2ff 50%, #dbeafe 100%);
    display: flex;
    align-items: center;
    min-height: 12rem;
    padding: 3rem 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.contact-header h1 {
    color: var(--color-gray-900);
}

.contact-header .breadcrumb-item + .breadcrumb-item::before {
    color: var(--color-gray-300);
}

.contact-header .breadcrumb-item a {
    color: var(--color-gray-700);
}

.contact-header .breadcrumb-item.active {
    color: var(--color-gray-700);
}

.contact-info-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--color-gray-50);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.contact-info-card:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
}

.contact-info-icon {
    width: 48px;
    height: 48px;
    background: rgba(37, 99, 235, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-info-card h6 {
    font-weight: 600;
    color: var(--color-gray-900);
}

.form-control,
.form-select {
    border-radius: var(--radius-sm);
    border-color: var(--color-gray-200);
    padding: 0.75rem 1rem;
    font-size: inherit;
    font-weight: inherit;
    color: var(--color-gray-700);
    transition: all var(--transition);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-label {
    color: var(--color-gray-700);
}

/* ========================================
   Scroll Animations
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-delay-1 {
    transition-delay: 0.15s;
}

.fade-in-delay-2 {
    transition-delay: 0.3s;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-up-delay {
    transition-delay: 0.15s;
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.slide-in-left.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.slide-in-right.is-visible {
    opacity: 1;
    transform: translateX(0);
}

/* Staggered animation for capability cards */
.fade-in-up[style*="--delay"] {
    transition-delay: var(--delay);
}

/* ========================================
   CTA Section
   ======================================== */
#cta {
    background: linear-gradient(160deg, #eef2ff 0%, #e0e7ff 50%, #dbeafe 100%);
    color: var(--color-gray-900);
}

#cta h2 {
    color: var(--color-gray-900);
}

#cta .lead {
    color: var(--color-gray-600);
    opacity: 1;
}

/* ========================================
   Footer
   ======================================== */
footer {
    font-size: 0.9rem;
    background: var(--color-gray-50);
    color: var(--color-gray-500);
    border-top: 1px solid var(--color-gray-200);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 991.98px) {
    .py-6 {
        padding-top: 3.5rem;
        padding-bottom: 3.5rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .security-visual {
        width: 220px;
        height: 220px;
    }
}

@media (max-width: 767.98px) {
    .page-header .nav {
        gap: 0;
    }

    .page-header .nav-link {
        padding: 0.4rem 0.6rem;
    }

    .hero-section {
        min-height: auto;
        padding: 7rem 0 4rem;
    }

    .hero-pills {
        gap: 0.4rem;
    }

    .hero-pill {
        font-size: 0.75rem;
        padding: 0.3rem 0.7rem;
    }

    .btn-lg {
        padding: 0.6rem 1.5rem;
        font-size: 0.95rem;
    }

    .service-card,
    .capability-card {
        padding: 1.5rem;
    }

    .contact-header {
        min-height: 8rem;
        padding: 2rem 0;
    }
}

/* Short viewports (landscape phones, small laptop screens) */
@media (max-height: 650px) {
    .hero-section {
        min-height: auto;
        padding: 7rem 0 2rem;
        justify-content: center;
    }

    .min-vh-75 {
        min-height: auto;
    }

    .hero-title {
        margin-bottom: 1rem;
    }

    .hero-subtitle {
        margin-bottom: 1.25rem;
    }

    .hero-pills {
        margin-top: 1.25rem;
    }

    .hero-scroll-indicator {
        display: none;
    }
}