/* ============================================
   Velijo CMS - Main Stylesheet
   Modern, minimal, professional design
   ============================================ */

/* ============================================
   CSS CUSTOM PROPERTIES
   ============================================ */
:root {
    --v-primary: #6366f1;
    --v-secondary: #0ea5e9;
    --v-accent: #f59e0b;
    --v-font: 'Inter', system-ui, -apple-system, sans-serif;

    /* Derived colors */
    --v-primary-rgb: 99, 102, 241;
    --v-secondary-rgb: 14, 165, 233;
    --v-gradient: linear-gradient(135deg, var(--v-primary), var(--v-secondary));
    --v-gradient-hover: linear-gradient(135deg, var(--v-secondary), var(--v-primary));

    /* Neutrals */
    --v-dark: #0f172a;
    --v-dark-2: #1e293b;
    --v-dark-3: #334155;
    --v-gray: #64748b;
    --v-gray-light: #94a3b8;
    --v-light: #f8fafc;
    --v-light-2: #f1f5f9;
    --v-light-3: #e2e8f0;
    --v-white: #ffffff;

    /* Spacing */
    --v-section-py: 7rem;

    /* Shadows */
    --v-shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --v-shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --v-shadow-md: 0 10px 25px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
    --v-shadow-lg: 0 20px 50px -12px rgba(0,0,0,0.15);
    --v-shadow-xl: 0 25px 60px -15px rgba(0,0,0,0.2);

    /* Radius */
    --v-radius: 12px;
    --v-radius-lg: 20px;
    --v-radius-xl: 28px;

    /* Transition */
    --v-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--v-font);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--v-dark);
    background: var(--v-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: rgba(var(--v-primary-rgb), 0.15);
    color: var(--v-primary);
}

.py-6 {
    padding-top: var(--v-section-py);
    padding-bottom: var(--v-section-py);
}

img {
    max-width: 100%;
    height: auto;
}

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

/* ============================================
   BUTTONS
   ============================================ */
.btn-primary-gradient {
    background: var(--v-gradient);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: var(--v-transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary-gradient::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--v-gradient-hover);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
    border-radius: inherit;
}

.btn-primary-gradient:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(var(--v-primary-rgb), 0.35);
}

.btn-primary-gradient:hover::before {
    opacity: 1;
}

.btn-outline-light {
    border-radius: 50px;
    font-weight: 600;
    border-width: 2px;
}

.btn-outline-light:hover {
    transform: translateY(-2px);
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    padding: 1rem 0;
    transition: var(--v-transition);
    background: transparent;
    z-index: 1050;
}

.navbar.scrolled {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 1px 20px rgba(0,0,0,0.06);
    padding: 0.6rem 0;
}

.nav-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--v-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
}

.brand-text {
    font-weight: 700;
    font-size: 1.2rem;
    color: #fff;
    transition: var(--v-transition);
}

.navbar.scrolled .brand-text {
    color: var(--v-dark);
}

.navbar .nav-link {
    color: rgba(255,255,255,0.85);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    position: relative;
    letter-spacing: 0.01em;
}

.navbar .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--v-gradient);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.navbar .nav-link:hover::after,
.navbar .nav-link.active::after {
    width: 60%;
}

.navbar .nav-link:hover {
    color: #fff;
}

.navbar.scrolled .nav-link {
    color: var(--v-dark-3);
}

.navbar.scrolled .nav-link:hover {
    color: var(--v-primary);
}

.navbar-toggler {
    color: #fff;
}

.navbar.scrolled .navbar-toggler {
    color: var(--v-dark);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--v-dark) 0%, #1a1547 40%, #0f2027 100%);
    position: relative;
}

.hero-bg-image {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    z-index: 1;
}

.hero-bg-shapes .shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.12;
}

.hero-bg-shapes .shape-1 {
    width: 600px;
    height: 600px;
    background: var(--v-primary);
    top: -200px;
    right: -100px;
    animation: float-slow 20s ease-in-out infinite;
}

.hero-bg-shapes .shape-2 {
    width: 400px;
    height: 400px;
    background: var(--v-secondary);
    bottom: -100px;
    left: -100px;
    animation: float-slow 25s ease-in-out infinite reverse;
}

.hero-bg-shapes .shape-3 {
    width: 300px;
    height: 300px;
    background: var(--v-accent);
    top: 50%;
    left: 50%;
    animation: float-slow 18s ease-in-out infinite;
}

.hero-bg-shapes .shape-4 {
    width: 200px;
    height: 200px;
    background: #a78bfa;
    bottom: 20%;
    right: 20%;
    animation: float-slow 22s ease-in-out infinite reverse;
}

@keyframes float-slow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -40px) scale(1.05); }
    50% { transform: translate(-20px, 30px) scale(0.95); }
    75% { transform: translate(40px, 20px) scale(1.02); }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(var(--v-primary-rgb), 0.15);
    border: 1px solid rgba(var(--v-primary-rgb), 0.25);
    color: #a5b4fc;
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.hero-badge i {
    color: var(--v-accent);
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
    margin-bottom: 1.2rem;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: rgba(255,255,255,0.65);
    max-width: 550px;
    line-height: 1.8;
}

.hero-stats {
    border-top: 1px solid rgba(255,255,255,0.1);
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--v-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

/* Hero Illustration */
.hero-illustration {
    position: relative;
    width: 100%;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-circle-main {
    width: 180px;
    height: 180px;
    background: var(--v-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: #fff;
    box-shadow: 0 0 80px rgba(var(--v-primary-rgb), 0.4);
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 60px rgba(var(--v-primary-rgb), 0.3); }
    50% { box-shadow: 0 0 100px rgba(var(--v-primary-rgb), 0.5); }
}

.floating-card {
    position: absolute;
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--v-radius);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
    animation: float 6s ease-in-out infinite;
}

.floating-card i {
    font-size: 1.3rem;
}

.floating-card.card-1 {
    top: 15%;
    left: 5%;
    animation-delay: 0s;
}

.floating-card.card-1 i { color: #34d399; }

.floating-card.card-2 {
    top: 10%;
    right: 10%;
    animation-delay: 2s;
}

.floating-card.card-2 i { color: var(--v-accent); }

.floating-card.card-3 {
    bottom: 20%;
    left: 0;
    animation-delay: 4s;
}

.floating-card.card-3 i { color: var(--v-secondary); }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-badge {
    display: inline-block;
    background: rgba(var(--v-primary-rgb), 0.08);
    color: var(--v-primary);
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    color: var(--v-dark);
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--v-gray);
    max-width: 600px;
    line-height: 1.7;
}

/* ============================================
   SYSTEMS CARDS
   ============================================ */
.systems-section {
    background: var(--v-light);
}

.system-card {
    background: var(--v-white);
    border-radius: var(--v-radius-lg);
    border: 1px solid var(--v-light-3);
    overflow: hidden;
    transition: var(--v-transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.system-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--v-shadow-lg);
    border-color: rgba(var(--v-primary-rgb), 0.15);
}

.system-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--v-primary);
    color: #fff;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 2;
}

.system-image {
    height: 200px;
    overflow: hidden;
    background: var(--v-light-2);
}

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

.system-card:hover .system-image img {
    transform: scale(1.05);
}

.system-icon-wrap {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--v-light) 0%, rgba(var(--v-primary-rgb), 0.04) 100%);
}

.system-icon-wrap i {
    font-size: 4rem;
    background: var(--v-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: transform 0.4s ease;
}

.system-card:hover .system-icon-wrap i {
    transform: scale(1.1) rotate(-5deg);
}

.system-content {
    padding: 1.5rem;
    flex: 1;
}

.system-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--v-dark);
    margin-bottom: 0.5rem;
}

.system-desc {
    font-size: 0.9rem;
    color: var(--v-gray);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.system-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--v-light-3);
}

.system-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--v-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.system-link:hover {
    gap: 12px;
    color: var(--v-secondary);
}

.system-link i {
    transition: transform 0.3s ease;
}

.system-link:hover i {
    transform: translateX(4px);
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-section {
    background: var(--v-white);
}

.about-visual {
    position: relative;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

.about-grid-item {
    background: var(--v-light);
    border: 1px solid var(--v-light-3);
    border-radius: var(--v-radius-lg);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: var(--v-transition);
}

.about-grid-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--v-shadow-md);
    border-color: rgba(var(--v-primary-rgb), 0.15);
}

.about-grid-item i {
    font-size: 2.5rem;
    margin-bottom: 0.8rem;
    display: block;
}

.about-grid-item.item-1 i { color: var(--v-accent); }
.about-grid-item.item-2 i { color: var(--v-primary); }
.about-grid-item.item-3 i { color: var(--v-secondary); }
.about-grid-item.item-4 i { color: #34d399; }

.about-grid-item span {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--v-dark);
}

.about-content {
    font-size: 0.95rem;
    color: var(--v-dark-3);
    line-height: 1.8;
}

.about-content h4 {
    color: var(--v-dark);
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.about-content ul {
    padding-left: 0;
    list-style: none;
}

.about-content ul li {
    padding: 0.3rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.about-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.85rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--v-gradient);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-section {
    background: var(--v-light);
}

.contact-info-card {
    background: var(--v-dark);
    border-radius: var(--v-radius-xl);
    padding: 2.5rem;
    color: #fff;
}

.contact-info-card h4 {
    font-weight: 700;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-icon {
    width: 44px;
    height: 44px;
    background: rgba(var(--v-primary-rgb), 0.15);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #a5b4fc;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--v-gray-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    margin-bottom: 2px;
}

.contact-item a,
.contact-item span {
    color: rgba(255,255,255,0.85);
    font-size: 0.95rem;
}

.contact-item a:hover {
    color: #fff;
}

.social-links {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.social-link {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.7);
    font-size: 1.1rem;
    transition: var(--v-transition);
}

.social-link:hover {
    background: var(--v-gradient);
    color: #fff;
    transform: translateY(-2px);
    border-color: transparent;
}

.contact-form-card {
    background: var(--v-white);
    border-radius: var(--v-radius-xl);
    padding: 2.5rem;
    box-shadow: var(--v-shadow);
    border: 1px solid var(--v-light-3);
}

.contact-form-card h4 {
    font-weight: 700;
    color: var(--v-dark);
}

.contact-form-card .form-control {
    border-radius: var(--v-radius);
    border: 1.5px solid var(--v-light-3);
    font-size: 0.95rem;
    transition: var(--v-transition);
}

.contact-form-card .form-control:focus {
    border-color: var(--v-primary);
    box-shadow: 0 0 0 3px rgba(var(--v-primary-rgb), 0.1);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background: var(--v-dark);
    color: rgba(255,255,255,0.7);
}

.footer-logo {
    height: 36px;
    width: auto;
}

.footer-heading {
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: #fff;
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.btn-back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--v-gradient);
    color: #fff;
    border: none;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--v-transition);
    box-shadow: var(--v-shadow-md);
    z-index: 1000;
    cursor: pointer;
}

.btn-back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.btn-back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--v-shadow-lg);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 991.98px) {
    :root {
        --v-section-py: 5rem;
    }

    .navbar-collapse {
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(20px);
        border-radius: var(--v-radius);
        margin-top: 0.5rem;
        padding: 1rem;
        box-shadow: var(--v-shadow-lg);
    }

    .navbar-collapse .nav-link {
        color: var(--v-dark) !important;
        padding: 0.8rem 1rem;
        border-radius: 8px;
    }

    .navbar-collapse .nav-link:hover {
        background: var(--v-light);
    }

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

    .hero-stats .col-6 {
        text-align: center;
    }

    .stat-value {
        font-size: 1.4rem;
    }
}

@media (max-width: 767.98px) {
    :root {
        --v-section-py: 4rem;
    }

    .hero-section {
        min-height: auto;
        padding-top: 120px;
        padding-bottom: 60px;
    }

    .hero-section .min-vh-100 {
        min-height: auto !important;
    }

    .contact-info-card,
    .contact-form-card {
        padding: 1.5rem;
    }

    .about-grid {
        gap: 0.8rem;
    }

    .about-grid-item {
        padding: 1.2rem 1rem;
    }

    .about-grid-item i {
        font-size: 2rem;
    }
}

/* ============================================
   LOADING ANIMATION
   ============================================ */
.page-loader {
    position: fixed;
    inset: 0;
    background: var(--v-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.loaded {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(var(--v-primary-rgb), 0.2);
    border-top-color: var(--v-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}