/**
 * ============================================================================
 * SIDDHIVINAYAK ENGINEERING - Main Stylesheet v2.0
 * ============================================================================
 * Modern, animated, elegant UI — pure CSS, no frameworks.
 * Color scheme: Deep Navy (#1a2332) + Electric Blue (#0066cc) + Gold accent
 */

/* ============================================================================
   CSS VARIABLES & ROOT
   ============================================================================ */

:root {
    /* Primary Colors */
    --color-primary: #0f1c2e;
    --color-primary-light: #1a2d45;
    --color-accent: #0070f3;
    --color-accent-dark: #0056c7;
    --color-accent-glow: rgba(0, 112, 243, 0.35);
    --color-gold: #f59e0b;
    --color-gold-light: #fcd34d;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-light-grey: #f4f6fb;
    --color-medium-grey: #dde1ea;
    --color-dark-grey: #64748b;
    --color-darker-grey: #1e293b;

    /* Status Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Poppins', sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    --font-size-xxxl: 48px;

    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-xxxl: 64px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
    --shadow-xl: 0 24px 48px rgba(0,0,0,0.15);
    --shadow-glow: 0 0 30px var(--color-accent-glow);
    --shadow-card: 0 2px 8px rgba(15,28,46,0.06), 0 8px 24px rgba(15,28,46,0.08);

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4,0,0.2,1);
    --transition-base: 250ms cubic-bezier(0.4,0,0.2,1);
    --transition-slow: 400ms cubic-bezier(0.4,0,0.2,1);
    --transition-bounce: 500ms cubic-bezier(0.34,1.56,0.64,1);

    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-modal: 1000;
    --z-notification: 2000;
    --z-preloader: 9999;
}

/* ============================================================================
   KEYFRAME ANIMATIONS
   ============================================================================ */

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(32px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-40px); }
    to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(40px); }
    to   { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.88); }
    to   { opacity: 1; transform: scale(1); }
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 var(--color-accent-glow); }
    50%       { box-shadow: 0 0 24px 8px var(--color-accent-glow); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-10px); }
}

@keyframes shimmer {
    0%   { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

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

@keyframes countUp {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes borderPulse {
    0%, 100% { border-color: rgba(0,112,243,0.3); }
    50%       { border-color: rgba(0,112,243,0.8); }
}

@keyframes gradientShift {
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Page Loader */
#page-loader {
    position: fixed;
    inset: 0;
    background: var(--color-primary);
    z-index: var(--z-preloader);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 20px;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#page-loader.loaded {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader-ring {
    width: 56px;
    height: 56px;
    border: 4px solid rgba(255,255,255,0.1);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

.loader-text {
    color: rgba(255,255,255,0.65);
    font-family: var(--font-display);
    font-size: 13px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

/* Scroll reveal base state */
.reveal-on-scroll,
.card,
.section-title,
.hero-stat,
.staggered-item,
.contact-panel,
.pill {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.65s cubic-bezier(0.22,1,0.36,1),
                transform 0.65s cubic-bezier(0.22,1,0.36,1);
}

.reveal-on-scroll.revealed,
.card.revealed,
.section-title.revealed,
.hero-stat.revealed,
.staggered-item.revealed,
.contact-panel.revealed,
.pill.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children delay */
.card:nth-child(1) { transition-delay: 0ms; }
.card:nth-child(2) { transition-delay: 80ms; }
.card:nth-child(3) { transition-delay: 160ms; }
.card:nth-child(4) { transition-delay: 240ms; }
.card:nth-child(5) { transition-delay: 320ms; }
.card:nth-child(6) { transition-delay: 400ms; }

.hero-stat:nth-child(1) { transition-delay: 100ms; }
.hero-stat:nth-child(2) { transition-delay: 200ms; }
.hero-stat:nth-child(3) { transition-delay: 300ms; }

.staggered-item:nth-child(odd)  { transition-delay: 60ms; }
.staggered-item:nth-child(even) { transition-delay: 140ms; }

/* ============================================================================
   RESET & NORMALIZE
   ============================================================================ */

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

*::before,
*::after {
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-darker-grey);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: var(--line-height-tight);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-xxxl); }
h2 { font-size: var(--font-size-xxl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5, h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--color-accent-dark);
    text-decoration: underline;
}

/* ============================================================================
   CONTAINER & LAYOUT
   ============================================================================ */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

main {
    min-height: calc(100vh - 300px);
}

/* ============================================================================
   HEADER & NAVIGATION
   ============================================================================ */

.header {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    border-bottom: 1px solid rgba(221, 225, 234, 0.6);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 20px rgba(15,28,46,0.06);
    transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
    background: rgba(255,255,255,0.97);
    box-shadow: 0 4px 30px rgba(15,28,46,0.10);
}

.navbar {
    padding: var(--spacing-md) 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.nav-logo img {
    max-width: 150px;
    height: auto;
    display: block;
    transition: transform var(--transition-bounce);
}

.nav-logo:hover img {
    transform: scale(1.04);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    flex-grow: 1;
    margin: 0 var(--spacing-lg);
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--color-darker-grey);
    font-weight: 500;
    padding: var(--spacing-xs) 2px;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -2px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
    border-radius: 2px;
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
    text-decoration: none;
}

.nav-cta {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: var(--color-white) !important;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    border-bottom: none;
    position: relative;
    overflow: hidden;
}

.nav-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.nav-cta:hover::before { opacity: 1; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); text-decoration: none; }
.nav-cta::after { display: none; }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger {
    width: 24px;
    height: 20px;
    position: relative;
    display: block;
}

.hamburger::before,
.hamburger::after,
.hamburger {
    background-color: var(--color-primary);
    display: block;
    height: 2px;
    border-radius: 2px;
    position: absolute;
    width: 100%;
    transition: all var(--transition-base);
}

.hamburger::before { content: ''; top: -8px; }
.hamburger::after  { content: ''; bottom: -8px; }

.nav-whatsapp-desktop {
    display: flex;
    align-items: center;
}

.nav-dropdown { position: relative; }

.nav-submenu {
    position: absolute;
    top: calc(100% + 16px);
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 250px;
    list-style: none;
    padding: 10px;
    margin: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(221,225,234,0.8);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
}

.nav-submenu::before {
    content: '';
    position: absolute;
    top: -7px; left: 50%;
    transform: translateX(-50%);
    width: 14px; height: 14px;
    background: white;
    border-left: 1px solid rgba(221,225,234,0.8);
    border-top: 1px solid rgba(221,225,234,0.8);
    transform: translateX(-50%) rotate(45deg);
}

.nav-dropdown:hover .nav-submenu,
.nav-dropdown:focus-within .nav-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.nav-submenu li a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 14px;
    transition: all var(--transition-fast);
}

.nav-submenu li a::before {
    content: '›';
    color: var(--color-accent);
    font-size: 18px;
    line-height: 1;
    opacity: 0;
    transform: translateX(-6px);
    transition: all var(--transition-fast);
}

.nav-submenu li a:hover {
    background: linear-gradient(135deg, rgba(0,112,243,0.06), rgba(0,112,243,0.02));
    color: var(--color-accent);
    text-decoration: none;
    padding-left: 18px;
}

.nav-submenu li a:hover::before {
    opacity: 1;
    transform: translateX(0);
}

.navbar {
    padding: var(--spacing-md) 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.nav-logo img {
    max-width: 150px;
    height: auto;
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    flex-grow: 1;
    margin: 0 var(--spacing-lg);
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--color-darker-grey);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.nav-cta {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-white) !important;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    border-bottom: none;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger {
    width: 24px;
    height: 20px;
    position: relative;
    display: block;
}

.hamburger::before,
.hamburger::after,
.hamburger {
    background-color: var(--color-primary);
    display: block;
    height: 2px;
    border-radius: 2px;
    position: absolute;
    width: 100%;
    transition: background 0.5s ease-in-out;
}

.hamburger::before {
    content: '';
    top: -8px;
}

.hamburger::after {
    content: '';
    bottom: -8px;
}

.nav-whatsapp-desktop {
    display: flex;
    align-items: center;
}

.nav-dropdown {
    position: relative;
}

.nav-submenu {
    position: absolute;
    top: calc(100% + 14px);
    left: 0;
    min-width: 240px;
    list-style: none;
    padding: var(--spacing-sm);
    margin: 0;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--color-medium-grey);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
}

.nav-dropdown:hover .nav-submenu,
.nav-dropdown:focus-within .nav-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-submenu li a {
    display: block;
    padding: 10px 14px;
    border-radius: 10px;
    color: var(--color-primary);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.nav-submenu li a:hover {
    background: var(--color-light-grey);
    color: var(--color-accent);
    text-decoration: none;
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    text-align: center;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.01em;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.15);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::after { opacity: 1; }

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, #0054c8 100%);
    color: var(--color-white);
    box-shadow: 0 4px 16px rgba(0,112,243,0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(0,112,243,0.45);
    text-decoration: none;
    color: var(--color-white);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: rgba(255,255,255,0.12);
    color: var(--color-white);
    border: 1px solid rgba(255,255,255,0.25);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background-color: rgba(255,255,255,0.2);
    border-color: rgba(255,255,255,0.4);
    transform: translateY(-2px);
    text-decoration: none;
    color: var(--color-white);
}

.btn-outline {
    border: 2px solid var(--color-accent);
    color: var(--color-accent);
    background-color: transparent;
}

.btn-outline:hover {
    background: linear-gradient(135deg, var(--color-accent), #0054c8);
    color: var(--color-white);
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,112,243,0.3);
    text-decoration: none;
}

.btn-whatsapp-nav {
    background: linear-gradient(135deg, #25d366, #1da851);
    color: var(--color-white) !important;
    padding: 10px var(--spacing-md);
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 4px 14px rgba(37,211,102,0.3);
    transition: all var(--transition-base);
}

.btn-whatsapp-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37,211,102,0.45);
    text-decoration: none;
}

/* ============================================================================
   HERO SECTION
   ============================================================================ */

.hero {
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0,112,243,0.22) 0%, transparent 55%),
        radial-gradient(ellipse at 80% 20%, rgba(245,158,11,0.12) 0%, transparent 45%),
        linear-gradient(135deg, #060d1a 0%, #0f1c2e 55%, #1a2d45 100%);
    color: var(--color-white);
    padding: 110px 0 96px;
    text-align: center;
    display: grid;
    place-items: center;
    position: relative;
    overflow: hidden;
    min-height: 540px;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.3), transparent 70%);
    pointer-events: none;
}

.hero-content {
    max-width: 840px;
    position: relative;
    z-index: 1;
    animation: fadeUp 0.9s cubic-bezier(0.22,1,0.36,1) both;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-full);
    background: rgba(0,112,243,0.18);
    color: rgba(255,255,255,0.95);
    border: 1px solid rgba(0,112,243,0.35);
    backdrop-filter: blur(12px);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.05em;
    animation: fadeIn 1s 0.3s both;
}

.hero-badge-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--color-gold);
    animation: pulseGlow 2s ease-in-out infinite;
    box-shadow: 0 0 0 0 rgba(245,158,11,0.5);
}

.hero h1 {
    color: var(--color-white);
    font-size: clamp(36px, 5vw, 64px);
    margin-bottom: var(--spacing-lg);
    line-height: 1.15;
    font-family: var(--font-display);
    animation: fadeUp 0.9s 0.15s cubic-bezier(0.22,1,0.36,1) both;
}

.hero h1 .hero-accent {
    background: linear-gradient(135deg, var(--color-accent), var(--color-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: var(--font-size-lg);
    color: rgba(255,255,255,0.72);
    margin-bottom: var(--spacing-xl);
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeUp 0.9s 0.25s cubic-bezier(0.22,1,0.36,1) both;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeUp 0.9s 0.35s cubic-bezier(0.22,1,0.36,1) both;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xxl);
    animation: fadeUp 0.9s 0.5s cubic-bezier(0.22,1,0.36,1) both;
}

.hero-stat {
    padding: 20px 18px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(12px);
    transition: all var(--transition-base);
}

.hero-stat:hover {
    background: rgba(0,112,243,0.15);
    border-color: rgba(0,112,243,0.4);
    transform: translateY(-4px);
}

.hero-stat strong {
    display: block;
    font-size: 30px;
    font-family: var(--font-display);
    color: var(--color-white);
    margin-bottom: 4px;
    font-weight: 700;
}

.hero-stat span {
    color: rgba(255,255,255,0.68);
    font-size: 13px;
    font-weight: 500;
}

/* ============================================================================
   SECTION STYLES
   ============================================================================ */

section {
    padding: var(--spacing-xxxl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xxxl);
}

.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 16px;
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, rgba(0,112,243,0.10), rgba(0,112,243,0.04));
    color: var(--color-accent);
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    font-size: 11px;
    border: 1px solid rgba(0,112,243,0.15);
}

.section-title h2 {
    font-size: clamp(28px, 4vw, 44px);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-display);
    font-weight: 700;
}

.section-title p {
    font-size: var(--font-size-lg);
    color: var(--color-dark-grey);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================================================
   CARD LAYOUTS
   ============================================================================ */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(221,225,234,0.6);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-slow);
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 48px rgba(15,28,46,0.14);
    border-color: rgba(0,112,243,0.18);
}

.card-image {
    width: 100%;
    height: 240px;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.22,1,0.36,1);
}

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

.card-content {
    padding: var(--spacing-lg);
}

.card-title {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    font-family: var(--font-display);
}

.card-description {
    color: var(--color-dark-grey);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-relaxed);
}

.card-footer {
    display: flex;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(221,225,234,0.6);
}

.section-surface {
    position: relative;
    overflow: hidden;
}

.section-surface::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at top right, rgba(0,112,243,0.07), transparent 45%),
                radial-gradient(ellipse at bottom left, rgba(245,158,11,0.05), transparent 45%);
    pointer-events: none;
}

.section-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-xl);
}

.section-grid-2 > * {
    position: relative;
    z-index: 1;
}

.pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.pill {
    display: inline-flex;
    align-items: center;
    padding: 9px 16px;
    border-radius: var(--radius-full);
    background: var(--color-light-grey);
    color: var(--color-primary);
    font-weight: 600;
    border: 1px solid rgba(221,225,234,0.8);
    font-size: 14px;
    transition: all var(--transition-base);
}

.pill:hover {
    background: rgba(0,112,243,0.08);
    border-color: rgba(0,112,243,0.3);
    color: var(--color-accent);
    transform: translateY(-2px);
}

.product-showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.product-detail-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.9fr);
    gap: var(--spacing-xl);
    align-items: start;
}

.product-spec-list {
    list-style: none;
    display: grid;
    gap: 12px;
}

.product-spec-list li {
    padding: 12px 14px;
    border-radius: var(--radius-md);
    background: #f7fafc;
    border: 1px solid var(--color-medium-grey);
}

.staggered-grid {
    column-count: 3;
    column-gap: var(--spacing-lg);
}

.staggered-item {
    break-inside: avoid;
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-white);
    border: 1px solid var(--color-medium-grey);
    box-shadow: var(--shadow-md);
}

.staggered-item img {
    width: 100%;
    display: block;
}

.staggered-item-caption {
    padding: var(--spacing-md);
}

.product-category-panel {
    background: #fff;
    border: 1px solid var(--color-medium-grey);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.product-category-menu {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.product-category-menu a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border-radius: var(--radius-md);
    background: var(--color-light-grey);
    color: var(--color-primary);
    font-weight: 600;
}

.product-category-menu a.active,
.product-category-menu a:hover {
    background: var(--color-accent);
    color: var(--color-white);
    text-decoration: none;
}

.gallery-metadata {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.gallery-tag {
    display: inline-flex;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(0, 102, 204, 0.08);
    color: var(--color-accent);
    font-size: 12px;
    font-weight: 700;
}

.contact-panel {
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    border: 1px solid var(--color-medium-grey);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
}

/* ============================================================================
   FORMS
   ============================================================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

label {
    display: block;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-medium-grey);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

textarea {
    resize: vertical;
    min-height: 150px;
}

/* ============================================================================
   TABLE STYLES
   ============================================================================ */

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-xl);
}

thead {
    background-color: var(--color-light-grey);
}

th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 700;
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-medium-grey);
}

td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-medium-grey);
}

tbody tr:hover {
    background-color: var(--color-light-grey);
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.footer {
    background: linear-gradient(180deg, #060d1a 0%, var(--color-primary) 100%);
    color: var(--color-white);
    margin-top: auto;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,112,243,0.5), rgba(245,158,11,0.4), transparent);
}

.footer-content {
    padding: var(--spacing-xxxl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-column {}

.footer-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    font-size: 15px;
    font-weight: 700;
    font-family: var(--font-display);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    position: relative;
    padding-bottom: 10px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 28px; height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
    border-radius: 2px;
}

.footer-description {
    color: rgba(255,255,255,0.55);
    line-height: var(--line-height-relaxed);
    font-size: 14px;
}

.footer-links,
.footer-contact {
    list-style: none;
}

.footer-links li,
.footer-contact li {
    margin-bottom: 10px;
}

.footer-links a,
.footer-contact a {
    color: rgba(255,255,255,0.55);
    font-size: 14px;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.footer-links a::before {
    content: '›';
    color: var(--color-accent);
    font-size: 16px;
    opacity: 0;
    transform: translateX(-4px);
    transition: all var(--transition-fast);
}

.footer-links a:hover::before {
    opacity: 1;
    transform: translateX(0);
}

.footer-links a:hover,
.footer-contact a:hover {
    color: var(--color-white);
    text-decoration: none;
    padding-left: 4px;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-link {
    display: inline-flex;
    width: 38px;
    height: 38px;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 50%;
    transition: all var(--transition-base);
    font-size: 16px;
}

.social-link:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0,112,243,0.4);
    text-decoration: none;
}

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

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.copyright {
    color: rgba(255,255,255,0.4);
    font-size: 13px;
}

.footer-legal {
    list-style: none;
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal a {
    color: rgba(255,255,255,0.4);
    font-size: 13px;
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: var(--color-white);
    text-decoration: none;
}

/* ============================================================================
   WHATSAPP FLOATING BUTTON
   ============================================================================ */

.whatsapp-floating-mobile {
    display: none;
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: var(--z-notification);
}

.whatsapp-float-icon {
    width: 58px;
    height: 58px;
    background: linear-gradient(135deg, #25d366, #1da851);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 6px 24px rgba(37,211,102,0.45);
    transition: all var(--transition-bounce);
    animation: pulseGlow 3s ease-in-out infinite;
}

.whatsapp-float-icon:hover {
    transform: scale(1.12) translateY(-3px);
    box-shadow: 0 12px 32px rgba(37,211,102,0.55);
    text-decoration: none;
}

/* ============================================================================
   NOTIFICATION SYSTEM
   ============================================================================ */

.notification-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: var(--z-notification);
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: none;
}

.notification {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px 20px;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(221,225,234,0.8);
    box-shadow: var(--shadow-xl);
    min-width: 300px;
    max-width: 400px;
    pointer-events: auto;
    transform: translateX(120%);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.22,1,0.36,1);
}

.notification.show {
    transform: translateX(0);
    opacity: 1;
}

.notification.hide {
    transform: translateX(120%);
    opacity: 0;
}

.notification-success { border-left: 4px solid var(--color-success); }
.notification-error   { border-left: 4px solid var(--color-error); }
.notification-warning { border-left: 4px solid var(--color-warning); }
.notification-info    { border-left: 4px solid var(--color-info); }

.notification-icon {
    font-size: 20px;
    flex-shrink: 0;
    margin-top: 1px;
}

.notification-body { flex: 1; }

.notification-title {
    font-weight: 700;
    font-size: 14px;
    color: var(--color-primary);
    margin-bottom: 2px;
}

.notification-message {
    font-size: 13px;
    color: var(--color-dark-grey);
    line-height: 1.5;
}

.notification-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-dark-grey);
    font-size: 18px;
    line-height: 1;
    padding: 0;
    flex-shrink: 0;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.notification-close:hover { opacity: 1; }

/* ============================================================================
   UTILITY CLASSES
   ============================================================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

.hidden { display: none; }
.visible { display: block; }

.skip-to-main {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 100;
}

.skip-to-main:focus { top: 0; }

/* ============================================================================
   PAGE HERO (interior pages)
   ============================================================================ */

.page-hero {
    background:
        radial-gradient(ellipse at 30% 60%, rgba(0,112,243,0.18) 0%, transparent 50%),
        linear-gradient(135deg, #060d1a 0%, #0f1c2e 60%, #1a2d45 100%);
    color: var(--color-white);
    padding: 80px 0 72px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 36px 36px;
    pointer-events: none;
}

.page-hero-content { position: relative; z-index: 1; }

.page-hero h1 {
    font-size: clamp(30px, 4vw, 52px);
    color: var(--color-white);
    font-family: var(--font-display);
    margin-bottom: var(--spacing-md);
    animation: fadeUp 0.8s cubic-bezier(0.22,1,0.36,1) both;
}

.page-hero p {
    color: rgba(255,255,255,0.65);
    font-size: var(--font-size-lg);
    max-width: 560px;
    margin: 0 auto;
    animation: fadeUp 0.8s 0.1s cubic-bezier(0.22,1,0.36,1) both;
}