/* ========================================
   CSS CUSTOM PROPERTIES - DESIGN SYSTEM
   ======================================== */
:root {
    /* Color Palette - Dark Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #151520;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);

    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-pink: #ec4899;
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #ec4899);

    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;

    --border-color: rgba(255, 255, 255, 0.1);
    --border-color-hover: rgba(255, 255, 255, 0.2);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.3);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.875rem;
    --font-size-sm: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.5rem;
    --font-size-xl: 2rem;
    --font-size-2xl: 3rem;
    --font-size-3xl: 4rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ========================================
   CSS RESET & BASE STYLES
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

button {
    font-family: inherit;
    border: none;
    cursor: pointer;
    background: none;
}

ul {
    list-style: none;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 200%;
    animation: gradient-shift 8s ease infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all var(--transition-base);
}

.glass-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ========================================
   NAVIGATION HEADER
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom-color: var(--border-color);
    box-shadow: var(--shadow-md);
}

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

.brand-link {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-logo {
    width: 32px;
    height: 32px;
}

.brand-text {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.brand-accent {
    color: var(--accent-primary);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 8px;
    transition: all var(--transition-base);
}

.nav-link:hover {
    color: var(--accent-primary);
    background: var(--bg-card);
}

.nav-link-cta {
    background: var(--accent-gradient);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-xs);
    background: var(--bg-card);
    border-radius: 8px;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ========================================
   HERO SECTION - VIDEO BACKGROUND
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-video-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-video-bg video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-video-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(10, 10, 15, 0.7) 0%,
        rgba(10, 10, 15, 0.5) 40%,
        rgba(10, 10, 15, 0.7) 100%
    );
}

.hero-content {
    text-align: center;
    max-width: 900px;
    z-index: 1;
    position: relative;
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.8;
}

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

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: 12px;
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-call {
    background: transparent;
    color: white;
    border: 2px solid var(--accent-primary);
    position: relative;
    overflow: hidden;
}

.btn-call::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.btn-call:hover {
    transform: translateY(-2px);
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

.btn-call:hover::before {
    opacity: 1;
}

.btn-secondary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-hover);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
    text-align: center;
}

.btn-loader {
    opacity: 0.7;
}

/* ========================================
   SECTIONS - COMMON STYLES
   ======================================== */
section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   WHY US SECTION
   ======================================== */
.why-us {
    background: var(--bg-secondary);
}

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

.benefit-card {
    padding: var(--spacing-lg);
    text-align: center;
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    display: inline-block;
    animation: bounce 2s ease-in-out infinite;
}

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

.benefit-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.benefit-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   SERVICES SECTION
   ======================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.service-card {
    padding: var(--spacing-md);
    overflow: hidden;
}

.service-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: var(--font-size-xs);
}

/* Service Card Visual Area */
.service-card-visual {
    height: 200px;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    position: relative;
}

/* ---- Card 1: Task List Demo ---- */
.task-list-demo {
    width: 85%;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 16px;
}

.task-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    animation: taskSlideIn 0.5s ease-out both;
}

@keyframes taskSlideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.task-check {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    flex-shrink: 0;
}

.task-check.done {
    background: var(--accent-primary);
    color: white;
}

.task-label {
    flex: 1;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.task-status {
    flex-shrink: 0;
    font-size: 12px;
}

.task-status.done {
    color: #22c55e;
}

.task-status.loading {
    display: flex;
    align-items: center;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ---- Card 2: Orbit Demo ---- */
.orbit-demo {
    position: relative;
    width: 180px;
    height: 180px;
}

.orbit-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: rgba(139, 92, 246, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.orbit-ring {
    position: absolute;
    inset: 0;
    animation: orbitSpin 20s linear infinite;
}

.orbit-icon {
    position: absolute;
    width: 34px;
    height: 34px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: orbitCounterSpin 20s linear infinite;
}

.o1 { top: 0; left: 50%; transform: translateX(-50%); }
.o2 { top: 18%; right: 0; }
.o3 { bottom: 18%; right: 0; }
.o4 { bottom: 0; left: 50%; transform: translateX(-50%); }
.o5 { bottom: 18%; left: 0; }
.o6 { top: 18%; left: 0; }

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

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

/* ---- Card 3: Analytics Demo ---- */
.analytics-demo {
    width: 85%;
    height: 80%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 16px;
    position: relative;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    height: 100%;
}

.chart-bar {
    flex: 1;
    height: var(--bar-height);
    background: linear-gradient(to top, rgba(99, 102, 241, 0.3), rgba(99, 102, 241, 0.6));
    border-radius: 4px 4px 0 0;
    animation: barGrow 1s ease-out both;
    position: relative;
}

.chart-bar.accent {
    background: linear-gradient(to top, var(--accent-primary), var(--accent-secondary));
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.3);
}

@keyframes barGrow {
    from {
        height: 0;
        opacity: 0;
    }
    to {
        height: var(--bar-height);
        opacity: 1;
    }
}

.chart-line {
    position: absolute;
    bottom: 16px;
    left: 16px;
    right: 16px;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

/* ---- Card 4: Scaling Demo ---- */
.scaling-demo {
    width: 85%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 16px;
}

.scale-nodes {
    display: flex;
    gap: 20px;
    align-items: center;
}

.scale-node {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.node-dot {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--accent-primary);
    z-index: 1;
}

.node-pulse {
    position: absolute;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--accent-primary);
    animation: pulse 2s ease-out infinite;
}

.scale-node.spawning .node-dot {
    animation: nodeSpawn 1.5s ease-out both;
}

.scale-node.spawning .node-pulse {
    animation: pulse 2s ease-out infinite 1.5s;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.5;
    }
    100% {
        transform: scale(2);
        opacity: 0;
    }
}

@keyframes nodeSpawn {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    60% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.scale-line {
    width: 80%;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--accent-primary), transparent);
}

.scale-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

.scale-arrow {
    color: #22c55e;
    font-weight: bold;
}

/* ---- Card 5: Monitor Demo ---- */
.monitor-demo {
    width: 85%;
    padding: 16px;
}

.monitor-screen {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

.monitor-header {
    display: flex;
    gap: 6px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.monitor-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.monitor-dot.red { background: #ef4444; }
.monitor-dot.yellow { background: #eab308; }
.monitor-dot.green { background: #22c55e; }

.monitor-wave {
    padding: 16px;
}

.monitor-wave svg {
    width: 100%;
    height: 50px;
}

.wave-path {
    stroke-dasharray: 300;
    stroke-dashoffset: 300;
    animation: drawWave 2s ease forwards infinite alternate;
}

@keyframes drawWave {
    to {
        stroke-dashoffset: 0;
    }
}

.monitor-stats {
    padding: 0 14px 12px;
    display: flex;
    justify-content: flex-end;
}

.stat-up {
    font-size: 0.75rem;
    color: #22c55e;
    background: rgba(34, 197, 94, 0.1);
    padding: 2px 10px;
    border-radius: 10px;
}

/* ---- Card 6: Code Demo ---- */
.code-demo {
    width: 85%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

.code-header {
    display: flex;
    gap: 16px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.code-tab.active-tab {
    color: var(--text-primary);
}

.code-lines {
    padding: 14px;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.75rem;
    line-height: 1.8;
}

.code-line {
    white-space: nowrap;
    animation: codeFadeIn 0.3s ease both;
}

.code-line:nth-child(1) { animation-delay: 0.1s; }
.code-line:nth-child(2) { animation-delay: 0.3s; }
.code-line:nth-child(3) { animation-delay: 0.5s; }
.code-line:nth-child(4) { animation-delay: 0.7s; }
.code-line:nth-child(5) { animation-delay: 0.9s; }
.code-line:nth-child(6) { animation-delay: 1.1s; }

@keyframes codeFadeIn {
    from { opacity: 0; transform: translateX(-5px); }
    to { opacity: 1; transform: translateX(0); }
}

.code-line.indent {
    padding-left: 24px;
}

.code-keyword { color: #c084fc; }
.code-func { color: #60a5fa; }
.code-string { color: #34d399; }
.code-prop { color: #f472b6; }

.typing-cursor::after {
    content: '|';
    color: var(--accent-primary);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* ========================================
   FAQ SECTION
   ======================================== */
.faq {
    background: var(--bg-secondary);
}

.faq-container {
    max-width: 800px;
    margin: var(--spacing-lg) auto 0;
}

.faq-item {
    margin-bottom: var(--spacing-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    border-color: var(--border-color-hover);
}

.faq-question {
    width: 100%;
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    cursor: pointer;
    transition: color var(--transition-base);
}

.faq-question:hover {
    color: var(--accent-primary);
}

.faq-icon {
    font-size: var(--font-size-xl);
    font-weight: 300;
    color: var(--accent-primary);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

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

.contact-details {
    margin-top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-detail-item {
    display: flex;
    gap: var(--spacing-sm);
    align-items: start;
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-detail-item h4 {
    font-size: var(--font-size-md);
    margin-bottom: 0.25rem;
    color: var(--accent-primary);
}

.contact-detail-item p,
.contact-detail-item a {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.contact-detail-item a:hover {
    color: var(--accent-primary);
}

/* ========================================
   CONTACT FORM
   ======================================== */
.contact-form {
    padding: var(--spacing-lg);
}

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

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-family: inherit;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-notification {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: 8px;
    font-size: var(--font-size-sm);
    text-align: center;
}

.form-notification.success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #22c55e;
}

.form-notification.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

/* ========================================
   FOOTER (No Legal column)
   ======================================== */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

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

.footer-brand {
    flex: 1;
}

.footer-brand .brand-logo {
    width: 28px;
    height: 28px;
}

.footer-brand .brand-text {
    font-size: 1.25rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.footer-column h4 {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--accent-primary);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-column a {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
}

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


.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
}

/* ========================================
   ANIMATIONS
   ======================================== */
.animate-fade-in {
    animation: fadeIn 0.8s ease-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger animation delays */
.animate-on-scroll:nth-child(1) { transition-delay: 0.1s; }
.animate-on-scroll:nth-child(2) { transition-delay: 0.2s; }
.animate-on-scroll:nth-child(3) { transition-delay: 0.3s; }
.animate-on-scroll:nth-child(4) { transition-delay: 0.4s; }
.animate-on-scroll:nth-child(5) { transition-delay: 0.5s; }
.animate-on-scroll:nth-child(6) { transition-delay: 0.6s; }

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Tablet (768px and below) */
@media (max-width: 768px) {
    :root {
        --font-size-3xl: 2.5rem;
        --font-size-2xl: 2rem;
        --font-size-xl: 1.5rem;
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        padding: var(--spacing-md);
        gap: var(--spacing-xs);
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        width: 100%;
        text-align: center;
        padding: var(--spacing-sm);
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .services-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
    }
}

/* Small Mobile (480px and below) */
@media (max-width: 480px) {
    :root {
        --font-size-3xl: 2rem;
        --font-size-2xl: 1.75rem;
        --spacing-md: 1.5rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

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

/* Large Desktop (1440px and above) */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }
}