/* ==========================================================================
       1. CSS Variables & 8px Scale
       ========================================================================== */
:root {
    /* Colors: Light Theme (Default) */
    --bg-color: #F8F9FA; /* Off-white */
    --text-main: #1A1F24;
    --text-muted: #5A6A7A;
    --accent-color: #26619C; /* Lapis Blue */
    --accent-secondary: #228B22; /* Green for growth */
    --accent-hover: #1b4b7a;
    --hero-bg: linear-gradient(135deg, #184169, #091726); /* Deep sophisticated blue */
    --card-bg: #FFFFFF;
    --header-bg: rgba(248, 249, 250, 0.85);
    --border-color: #E2E8F0;
    --error-color: #DC2626;

    /* Spacing (8px Scale) */
    --sp-1: 8px;
    --sp-2: 16px;
    --sp-3: 24px;
    --sp-4: 32px;
    --sp-5: 40px;
    --sp-6: 48px;
    --sp-8: 64px;
    --sp-12: 80px; /* Reduced to save vertical space */

    /* Transitions */
    --trans-main: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --trans-theme: 0.5s ease;
}

/* Colors: Dark Theme */
[data-theme="dark"] {
    --bg-color: #0A192F; /* Deep Navy */
    --text-main: #F8F9FA;
    --text-muted: #A0AEC0;
    --card-bg: #112240;
    --header-bg: rgba(10, 25, 47, 0.85);
    --border-color: #233554;
    --hero-bg: linear-gradient(135deg, #0A192F, #03080e);
}

/* ==========================================================================
   2. Global Styles & Reset
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    transition: background-color var(--trans-theme), color var(--trans-theme);
    overflow-x: hidden;
}

/* Theme transition overlay effect */
body::after {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--bg-color);
    opacity: 0;
    pointer-events: none;
    z-index: -1;
    transition: opacity var(--trans-theme);
}

h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--sp-2);
}

h1 { font-size: clamp(32px, 5vw, 48px); }
h2 { font-size: clamp(24px, 4vw, 32px); }
h3 { font-size: 20px; }

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--sp-3);
    position: relative;
}

/* ==========================================================================
   3. UI Components
   ========================================================================== */
.btn {
    display: inline-block;
    padding: var(--sp-2) var(--sp-4);
    background-color: var(--accent-color);
    color: #FFF;
    border: none;
}
.btn-outline:hover {
    background-color: var(--accent-color);
    color: #FFF;
}

.btn-hero-outline {
    background-color: transparent;
    color: #FFF;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-hero-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: #FFF;
    transform: translateY(-2px);
}

.section-padding {
    padding: var(--sp-12) 0;
}

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

/* ==========================================================================
   4. Header & Navigation
   ========================================================================== */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--header-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--trans-theme), border-color var(--trans-theme);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo img {
    max-height: 64px; /* Increased from 48px to make the logo bigger */
    width: auto;
    object-fit: contain;
}

nav.desktop-nav {
    display: flex;
    align-items: center;
    flex: 1;
}

.nav-links {
    display: flex;
    justify-content: center;
    flex: 1;
    gap: clamp(24px, 4vw, 64px);
    list-style: none;
    padding: 0 var(--sp-4);
}

.nav-links a {
    color: var(--text-main);
    font-weight: 700;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    position: relative;
    white-space: nowrap;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--accent-color);
    transition: width var(--trans-main);
}

.nav-links a:hover::after {
    width: 100%;
}

.controls {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
}

.lang-switch {
    display: flex;
    gap: var(--sp-1);
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 14px;
    cursor: pointer;
    padding: 4px;
    transition: color var(--trans-main);
    position: relative;
}

.lang-btn.active {
    color: var(--accent-color);
    font-weight: 700;
}

.lang-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--accent-color);
}

.theme-toggle, .mobile-toggle {
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    padding: var(--sp-1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--trans-main);
}

.theme-toggle:hover {
    transform: rotate(15deg);
}

.mobile-toggle {
    display: none;
}

.mobile-menu {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100vh;
    background-color: var(--bg-color);
    z-index: 999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--trans-main);
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu .nav-links {
    flex-direction: column;
    align-items: center;
    gap: var(--sp-4);
}

.mobile-menu .nav-links a {
    font-size: 24px;
}

/* ==========================================================================
   5. App Content & Layouts
   ========================================================================== */
#app-content {
    margin-top: 80px;
    transition: opacity var(--trans-main);
}

/* Hero Section */
.hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: calc(100vh - 80px);
    padding-top: var(--sp-8);
    padding-bottom: var(--sp-8);
    background: var(--hero-bg);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: radial-gradient(rgba(255,255,255,0.08) 2px, transparent 2px);
    background-size: 32px 32px;
    z-index: 1;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-8);
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-graphic {
    position: relative;
    height: 400px;
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
}

@keyframes float {
    0% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
    100% { transform: translateY(0px) rotate(0deg); }
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.8;
    backdrop-filter: blur(10px);
    animation: float 6s ease-in-out infinite;
}

.shape-1 { width: 300px; height: 300px; background: linear-gradient(135deg, var(--accent-color), transparent); top: 10%; right: 10%; }
.shape-2 { width: 180px; height: 180px; background: linear-gradient(135deg, var(--accent-secondary), transparent); bottom: 10%; left: 10%; animation-delay: -2s; }
.shape-3 { width: 100px; height: 100px; border: 2px solid rgba(255,255,255,0.2); top: 50%; left: 40%; animation-delay: -4s; background: transparent;}

.hero h1 {
    color: #FFFFFF;
    margin-bottom: var(--sp-3);
}

.hero p {
    font-size: 20px;
    color: #E2E8F0;
    margin-bottom: var(--sp-4);
    max-width: 600px;
}

/* Asymmetrical About Layout */
.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-8);
    align-items: start;
}

.identity-block {
    margin-top: var(--sp-4);
    padding-left: var(--sp-3);
    border-left: 4px solid var(--accent-secondary);
}

/* Clientele Section Layout */
.clientele-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4);
    margin-top: var(--sp-4);
}

.clientele-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--sp-3);
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    transition: transform var(--trans-main), box-shadow var(--trans-main);
}

.clientele-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.06);
    border-color: var(--accent-color);
}

.clientele-banner {
    background: linear-gradient(to right, rgba(38,97,156,0.05), rgba(34,139,34,0.05));
    border-radius: 8px;
    padding: var(--sp-4);
    margin-top: var(--sp-4);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-color);
}

/* Card Styles */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-top: 4px solid var(--accent-color);
    border-radius: 8px;
    padding: var(--sp-4);
    position: relative;
    overflow: hidden;
    transition: transform var(--trans-main), box-shadow var(--trans-main), background-color var(--trans-theme), border-color var(--trans-theme);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card::after {
    content: '';
    position: absolute;
    top: 0; right: 0; width: 150px; height: 150px;
    background: radial-gradient(circle at top right, rgba(38, 97, 156, 0.08), transparent 70%);
    opacity: 0;
    transition: opacity var(--trans-main);
    pointer-events: none;
    border-radius: 0 8px 0 100%;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 32px rgba(0,0,0,0.08);
    border-top-color: var(--accent-secondary);
}

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

.icon-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background-color: rgba(38, 97, 156, 0.1);
    color: var(--accent-color);
    border-radius: 12px;
    margin-bottom: var(--sp-3);
    transition: transform var(--trans-main), background-color var(--trans-main), color var(--trans-main);
}

.card:hover .icon-wrapper {
    transform: scale(1.1) rotate(-5deg);
    background-color: var(--accent-secondary);
    color: #FFFFFF;
}

.card h3 {
    color: var(--accent-color);
    margin-bottom: var(--sp-2);
}

.card p {
    color: var(--text-muted);
    font-size: 15px;
    flex-grow: 1;
}

.target-age {
    display: inline-block;
    margin-top: var(--sp-2);
    padding: 4px 12px;
    background-color: rgba(34, 139, 34, 0.1);
    color: var(--accent-secondary);
    font-size: 13px;
    font-weight: 700;
    border-radius: 20px;
    align-self: flex-start;
}

/* Horizontal Scroll Features */
.scroll-wrapper {
    position: relative;
    margin-top: var(--sp-6);
}

.scroll-track {
    display: flex;
    gap: var(--sp-4);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    padding: var(--sp-2) 4px var(--sp-4) 4px; /* padding for box-shadow */
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none;  /* IE and Edge */
    align-items: stretch; /* Forces all cards in track to match the tallest sibling's height */
}

.scroll-track::-webkit-scrollbar { display: none; } /* Chrome, Safari */

.scroll-item {
    flex: 0 0 calc(33.333% - (var(--sp-4) * 2 / 3));
    min-width: 320px;
    scroll-snap-align: start;
    height: auto !important; /* Lets flex stretch dictate the uniform height, overriding .card height: 100% */
}

.scroll-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: all var(--trans-main);
}

.scroll-btn:hover {
    background: var(--accent-color);
    color: #FFF;
}

.scroll-btn.left { left: -24px; }
.scroll-btn.right { right: -24px; }

.scroll-btn.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-50%) scale(0.8);
}

/* Products Dark Break */
.dark-section {
    background: var(--hero-bg);
    color: #FFF;
    position: relative;
    border-top: none;
}

.dark-section h2 { color: #FFF; }
.dark-section .card {
    background: rgba(255,255,255,0.03);
    border-color: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
}
.dark-section .card h3 { color: #FFF; }
.dark-section .card p { color: #A0AEC0; }
.dark-section .scroll-btn { background: #112240; border-color: rgba(255,255,255,0.1); }
.dark-section .scroll-btn:hover { background: var(--accent-secondary); }

/* Product Accent Colors */
.prod-1 { --p-color: #F59E0B; --p-bg: rgba(245, 158, 11, 0.15); } /* Gold */
.prod-2 { --p-color: #06B6D4; --p-bg: rgba(6, 182, 212, 0.15); } /* Cyan */
.prod-3 { --p-color: #8B5CF6; --p-bg: rgba(139, 92, 246, 0.15); } /* Purple */
.prod-4 { --p-color: #EC4899; --p-bg: rgba(236, 72, 153, 0.15); } /* Pink */
.prod-5 { --p-color: #EF4444; --p-bg: rgba(239, 68, 68, 0.15); } /* Red */
.prod-6 { --p-color: #10B981; --p-bg: rgba(16, 185, 129, 0.15); } /* Emerald */

.dark-section .card { border-top-color: rgba(255,255,255,0.1); }
.dark-section .card:hover { border-top-color: var(--p-color); }
.dark-section .card .icon-wrapper { color: var(--p-color); background: rgba(255,255,255,0.05); }
.dark-section .card:hover .icon-wrapper { background-color: var(--p-color); color: #FFF; }
.dark-section .card .target-age { color: var(--p-color); background-color: var(--p-bg); }

/* Contact Section */
#contact.section-padding {
    padding: var(--sp-8) 0; /* Override generic padding for a more compact footprint */
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-6); /* Reduced from sp-8 */
    margin-top: var(--sp-4); /* Reduced from sp-6 */
    align-items: start;
}

.contact-info p {
    margin-bottom: var(--sp-2);
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    font-size: 15px; /* Slightly smaller to match compactness */
}

/* Form Styling */
.form-group { margin-bottom: var(--sp-2); } /* Reduced from sp-3 */
.form-group label {
    display: block;
    margin-bottom: 4px; /* Reduced from sp-1 */
    font-weight: 700;
    font-size: 13px; /* Reduced for compactness */
}

.form-control {
    width: 100%;
    padding: 10px 14px; /* Reduced padding */
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 15px; /* Reduced font size */
    transition: border-color var(--trans-main), box-shadow var(--trans-main), background-color var(--trans-theme);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(38, 97, 156, 0.2);
}

textarea.form-control { resize: vertical; min-height: 90px; } /* Reduced from 120px */

.form-error {
    color: var(--error-color);
    font-size: 13px;
    margin-top: 4px;
    display: none;
}

/* Preloader */
#preloader {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: var(--bg-color);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
}

.spinner {
    width: 40px; height: 40px;
    border: 3px solid rgba(38, 97, 156, 0.2);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin { 100% { transform: rotate(360deg); } }

/* Footer */
footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: var(--sp-6) 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--sp-2);
    margin-bottom: var(--sp-3);
}

.footer-links a {
    color: var(--text-muted);
    font-weight: 700;
}

.footer-links a:hover {
    color: var(--accent-color);
}

.ia-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-muted);
    background: var(--bg-color);
    padding: 6px 16px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    margin-top: var(--sp-3);
}

/* Responsive */
@media (max-width: 1024px) {
    .scroll-btn { display: none; } /* Rely on touch/swipe for tablets/mobile */
}

@media (max-width: 940px) {
    nav.desktop-nav { display: none; }
    .mobile-toggle { display: block; }
    .contact-grid, .about-layout, .hero-inner, .clientele-grid { grid-template-columns: 1fr; }
    .hero-graphic { display: none; }
    .scroll-item { flex: 0 0 85%; min-width: 280px; } /* Show hint of next card on mobile */
    h1 { font-size: 32px; }
    .section-padding { padding: var(--sp-8) 0; }
}