/* ===== VARIABLES ===== */
:root {
    /* Indigo Profond Palette */
    --primary: #4F46E5;
    --primary-light: #818CF8;
    --primary-dark: #3730A3;
    --dark-base: #0F172A;
    --dark-surface: #1E293B;
    --dark-elevated: #334155;
    
    /* Light theme */
    --bg-light: #F8FAFC;
    --surface-light: #FFFFFF;
    --text-light: #0F172A;
    --text-muted-light: #64748B;
    
    /* Current theme (default dark) */
    --bg: var(--dark-base);
    --surface: var(--dark-surface);
    --elevated: var(--dark-elevated);
    --text: #F8FAFC;
    --text-muted: #94A3B8;
    
    /* Glass effect */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --container-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 3rem;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light theme variables */
body.light-theme {
    --bg: var(--bg-light);
    --surface: var(--surface-light);
    --elevated: #F1F5F9;
    --text: var(--text-light);
    --text-muted: var(--text-muted-light);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(79, 70, 229, 0.1);
    --glass-shadow: rgba(79, 70, 229, 0.05);
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: var(--transition);
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(79, 70, 229, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(129, 140, 248, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Floating orbs background */
body::after {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 15% 25%, rgba(79, 70, 229, 0.08) 0%, transparent 25%),
        radial-gradient(circle at 85% 15%, rgba(129, 140, 248, 0.06) 0%, transparent 25%),
        radial-gradient(circle at 50% 80%, rgba(79, 70, 229, 0.05) 0%, transparent 30%);
    animation: float-orbs 30s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes float-orbs {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(3%, -3%) rotate(120deg); }
    66% { transform: translate(-3%, 3%) rotate(240deg); }
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }

/* ===== CONTAINER ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== GLASS EFFECTS ===== */
.glass-nav,
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px 0 var(--glass-shadow);
}

.glass-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-top: none;
}

.glass-card {
    border-radius: 16px;
    padding: var(--spacing-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 16px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(129, 140, 248, 0.3), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* Mouse tracking glow */
.glass-card::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    top: var(--mouse-y, 50%);
    left: var(--mouse-x, 50%);
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(79, 70, 229, 0.15) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 0;
}

/* Form specific - disable parallax effects */
.contact-form {
    z-index: 10;
}

.contact-form::after {
    display: none;
}

.contact-form:hover {
    transform: translateY(-4px) !important;
}

.glass-card:hover::before {
    opacity: 1;
}

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

.glass-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 
        0 20px 60px 0 rgba(79, 70, 229, 0.3),
        0 0 0 1px rgba(129, 140, 248, 0.2);
}

/* Floating animation for cards */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.services-grid .glass-card:nth-child(1) {
    animation: float 6s ease-in-out infinite;
}

.services-grid .glass-card:nth-child(2) {
    animation: float 7s ease-in-out infinite 0.5s;
}

.services-grid .glass-card:nth-child(3) {
    animation: float 8s ease-in-out infinite 1s;
}

.services-grid .glass-card:nth-child(4) {
    animation: float 7.5s ease-in-out infinite 1.5s;
}

/* ===== NAVIGATION ===== */
.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    transition: var(--transition);
}

.logo-img {
    height: 45px;
    width: 45px;
    transition: var(--transition);
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo:hover .logo-img {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 12px rgba(79, 70, 229, 0.4));
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

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

.nav-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.icon-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.icon-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: scale(1.05);
}

/* ===== SECTIONS ===== */
.section {
    padding: var(--spacing-xl) 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
}

/* Parallax layers */
.section .container {
    position: relative;
    z-index: 2;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-lg);
}

/* ===== HERO ===== */
.hero {
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Floating decorative elements */
.hero::before {
    content: '';
    position: absolute;
    top: 10%;
    right: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(129, 140, 248, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    animation: float-slow 20s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 10%;
    left: 5%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(50px);
    animation: float-slow 15s ease-in-out infinite reverse;
}

@keyframes float-slow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.1); }
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 4rem);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
    cursor: pointer;
    border: none;
    font-size: var(--font-size-base);
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 2px solid var(--glass-border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* ===== SERVICES ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.card-icon {
    margin-bottom: var(--spacing-sm);
    filter: drop-shadow(0 4px 12px rgba(79, 70, 229, 0.3));
    transition: var(--transition);
}

.card-icon img {
    width: 64px;
    height: 64px;
    color: var(--primary-light);
    stroke: var(--primary-light);
}

.glass-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
    filter: drop-shadow(0 8px 24px rgba(79, 70, 229, 0.5));
}

.glass-card:hover .card-icon img {
    stroke: var(--primary);
}

.glass-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-light);
}

.glass-card p {
    color: var(--text-muted);
}

/* ===== ABOUT ===== */
.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.about-card {
    text-align: left;
}

.expertise-list {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-sm);
}

.expertise-list li {
    padding: var(--spacing-xs) 0;
    color: var(--text-muted);
    position: relative;
    padding-left: var(--spacing-md);
}

.expertise-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

/* ===== CONTACT ===== */
.contact-container {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.contact-form {
    padding: var(--spacing-md);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: var(--glass-bg);
    color: var(--text);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: var(--transition);
    position: relative;
    z-index: 20;
    cursor: text;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-status {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: 8px;
    display: none;
}

.form-status.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10B981;
    display: block;
}

.form-status.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #EF4444;
    display: block;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-details {
    margin-top: var(--spacing-sm);
}

.contact-details p {
    margin-bottom: var(--spacing-xs);
    color: var(--text-muted);
}

.contact-details strong {
    color: var(--primary-light);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--glass-bg);
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-md) 0;
    text-align: center;
    color: var(--text-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: var(--spacing-md) 0;
        min-height: auto;
        transform: none !important;
    }
    
    /* Disable parallax on mobile */
    .glass-card {
        transform: none !important;
        position: relative;
        z-index: 1;
    }
    
    .services-grid .glass-card {
        animation: none;
    }
    
    /* Fix stacking context on mobile */
    .about-content,
    .services-grid {
        position: relative;
        z-index: 2;
    }
}