/* ==========================================================================
   KAPIGNA STUDIO DESIGN SYSTEM & UTILITIES
   ========================================================================== */

/* Core Variables & Theme Accent Rules */
:root {
    /* Fonts */
    --font-header: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Shared Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

    /* Spacing */
    --container-width: 1280px;
}

/* Light Theme Variables */
:root.light {
    --bg-dark: #f8fafc;
    --bg-dark-rgb: 248, 250, 252;
    --bg-card: rgba(255, 255, 255, 0.6);
    --bg-card-hover: rgba(255, 255, 255, 0.85);
    --border-color: rgba(15, 23, 42, 0.08);
    --border-hover: rgba(15, 23, 42, 0.15);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --glow-opacity: 0.06;
}

/* Default Dark Theme Variables */
:root, :root.dark {
    --bg-dark: #080811;
    --bg-dark-rgb: 8, 8, 17;
    --bg-card: rgba(20, 20, 38, 0.55);
    --bg-card-hover: rgba(25, 25, 48, 0.75);
    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --glow-opacity: 0.15;
}

/* Accent Color Variations */
:root[data-accent="cyan"] {
    --accent-color: #00f2fe;
    --accent-rgb: 0, 242, 254;
    --accent-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
    --accent-glow: rgba(0, 242, 254, 0.15);
}

:root[data-accent="purple"] {
    --accent-color: #c084fc;
    --accent-rgb: 192, 132, 252;
    --accent-gradient: linear-gradient(135deg, #c084fc 0%, #8b5cf6 100%);
    --accent-glow: rgba(192, 132, 252, 0.15);
}

:root[data-accent="emerald"] {
    --accent-color: #34d399;
    --accent-rgb: 52, 211, 153;
    --accent-gradient: linear-gradient(135deg, #34d399 0%, #059669 100%);
    --accent-glow: rgba(52, 211, 153, 0.15);
}

:root[data-accent="amber"] {
    --accent-color: #fbbf24;
    --accent-rgb: 251, 191, 36;
    --accent-gradient: linear-gradient(135deg, #fbbf24 0%, #d97706 100%);
    --accent-glow: rgba(251, 191, 36, 0.15);
}

/* Reset & Base Setup */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

/* Decorative Background Glows */
.bg-glow {
    position: fixed;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    filter: blur(160px);
    pointer-events: none;
    z-index: -1;
    opacity: var(--glow-opacity);
    transition: opacity var(--transition-normal), background-color var(--transition-slow);
}

.bg-glow-1 {
    top: -20%;
    left: -10%;
    background-color: var(--accent-color);
}

.bg-glow-2 {
    bottom: -10%;
    right: -10%;
    background: radial-gradient(circle, var(--accent-color) 0%, transparent 70%);
}

.bg-glow-3 {
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(124, 58, 237, 0.2);
    width: 40vw;
    height: 40vw;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-header);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

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

/* Layout Utilities */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.grid {
    display: grid;
    gap: 2rem;
}

.grid-2-cols { grid-template-columns: repeat(2, 1fr); }
.grid-3-cols { grid-template-columns: repeat(3, 1fr); }
.grid-4-cols { grid-template-columns: repeat(4, 1fr); }

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

/* Section Global Styles */
.section {
    padding: 8rem 0;
    position: relative;
}

.section-header {
    margin-bottom: 4rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: 3rem;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* Glowing text gradient */
.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.875rem 2rem;
    font-family: var(--font-header);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 9999px;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #080811;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(var(--accent-rgb), 0.35);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    border-color: var(--border-color);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.btn-tertiary {
    background: transparent;
    color: var(--text-primary);
    border-color: transparent;
}

.btn-tertiary:hover {
    color: var(--accent-color);
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.85rem;
}

.btn-full {
    width: 100%;
}

.btn-icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-hover);
    transform: scale(1.05);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(var(--accent-rgb), 0.08);
    border: 1px solid rgba(var(--accent-rgb), 0.15);
    padding: 0.375rem 1rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent-color);
    transition: all var(--transition-normal);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background-color: var(--accent-color);
    border-radius: 50%;
    display: inline-block;
    animation: pulse 2s infinite;
}

/* Glassmorphism Cards */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
}

.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    transition: border-color var(--transition-normal), background var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(var(--accent-rgb), 0.3);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* ==========================================================================
   COMPONENT STYLES
   ========================================================================== */

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    transition: background-color var(--transition-normal), border-color var(--transition-normal), padding var(--transition-normal);
    padding: 1.5rem 0;
    border-bottom: 1px solid transparent;
}

header.scrolled {
    padding: 1rem 0;
    background-color: rgba(var(--bg-dark-rgb), 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-header);
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: 0.05em;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 1.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    font-family: var(--font-header);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    position: relative;
    padding: 0.25rem 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-normal);
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

/* Hero Section */
.hero-section {
    padding-top: 12rem;
    padding-bottom: 8rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-title {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 580px;
}

.hero-ctas {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

/* Quick Stats */
.hero-stats {
    border-top: 1px solid var(--border-color);
    padding-top: 2.5rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-header);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    color: var(--text-primary);
    display: inline-block;
}

.stat-plus {
    font-size: 1.75rem;
    color: var(--accent-color);
    font-weight: 700;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Hero Visual / Mockup Container */
.hero-visual-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-wrapper {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.visual-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120%;
    height: 120%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.2) 0%, transparent 65%);
    z-index: -1;
    pointer-events: none;
}

.hero-img {
    width: 100%;
    height: auto;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    display: block;
    transition: transform var(--transition-slow);
}

.hero-img:hover {
    transform: perspective(1000px) rotateX(2deg) rotateY(-2deg) scale(1.02);
}

/* Floating Glass Cards */
.floating-card {
    position: absolute;
    padding: 1rem 1.5rem;
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: float 6s ease-in-out infinite;
}

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

.floating-card-2 {
    bottom: 15%;
    right: -10%;
    animation-delay: 3s;
}

.fc-icon {
    font-size: 1.25rem;
    color: var(--accent-color);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(var(--accent-rgb), 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
}

.fc-info {
    display: flex;
    flex-direction: column;
}

.fc-title {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.fc-value {
    font-size: 0.9rem;
    font-family: var(--font-header);
    font-weight: 700;
    color: var(--text-primary);
}

/* Mouse Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    justify-content: center;
}

.mouse-icon {
    width: 28px;
    height: 46px;
    border: 2px solid var(--text-muted);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.mouse-icon:hover {
    border-color: var(--accent-color);
}

.wheel {
    width: 4px;
    height: 8px;
    background-color: var(--text-muted);
    border-radius: 2px;
    animation: scroll-wheel 1.6s ease-in-out infinite;
}

/* Services / Features Grid */
.service-card {
    display: flex;
    flex-direction: column;
}

.card-header-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.service-card:hover .card-header-glow {
    opacity: 1;
}

.service-icon {
    font-size: 2.25rem;
    color: var(--accent-color);
    margin-bottom: 2rem;
    transition: transform var(--transition-normal);
}

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

.card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card-text {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.card-features {
    list-style: none;
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.card-features li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-features li i {
    color: var(--accent-color);
    font-size: 0.85rem;
}

/* Experience / Sandbox Customizer */
.interactive-sandbox {
    border-radius: 20px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    padding: 0;
}

.sandbox-header {
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sandbox-dots {
    display: flex;
    gap: 0.5rem;
}

.s-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.sandbox-title {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.sandbox-body {
    padding: 2.5rem;
}

.sandbox-preview {
    border: 1px dashed var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    transition: border-color var(--transition-normal);
}

.preview-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.preview-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

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

.preview-badge {
    background: rgba(var(--accent-rgb), 0.15);
    color: var(--accent-color);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    text-transform: uppercase;
}

.accent-selectors {
    display: flex;
    gap: 1rem;
    margin-top: 0.75rem;
}

.accent-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--accent-color);
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.accent-btn:hover {
    transform: scale(1.1);
}

.accent-btn.active {
    border-color: var(--text-primary);
    transform: scale(1.15);
}

.control-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* IoT Dashboard Switch Toggle Styling */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 22px;
}

.switch input { 
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.05);
    transition: all var(--transition-fast);
    border-radius: 22px;
    border: 1px solid var(--border-color);
}

.slider:before {
    position: absolute;
    content: "";
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-secondary);
    transition: all var(--transition-fast);
    border-radius: 50%;
}

input:checked + .slider {
    background: var(--accent-gradient);
    border-color: var(--accent-color);
}

input:checked + .slider:before {
    transform: translateX(22px);
    background-color: #080811;
}


/* Showcase Section */
.project-card {
    padding: 0;
    border-radius: 20px;
    overflow: hidden;
    height: 350px;
}

.project-img-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.project-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-slow);
}

.gradient-project-1 {
    background: linear-gradient(135deg, rgba(8, 8, 17, 0.9) 0%, rgba(31, 41, 55, 0.4) 100%), 
                radial-gradient(circle at 10% 20%, rgba(var(--accent-rgb), 0.25) 0%, transparent 60%);
}

.gradient-project-2 {
    background: linear-gradient(135deg, rgba(8, 8, 17, 0.9) 0%, rgba(17, 24, 39, 0.4) 100%), 
                radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.25) 0%, transparent 60%);
}

.placeholder-icon {
    font-size: 5rem;
    color: rgba(255, 255, 255, 0.05);
    transition: transform var(--transition-normal), color var(--transition-normal);
}

.project-card:hover .placeholder-icon {
    transform: scale(1.2);
    color: rgba(var(--accent-rgb), 0.15);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(8, 8, 17, 0.95) 0%, rgba(8, 8, 17, 0.6) 50%, rgba(8, 8, 17, 0.2) 100%);
    padding: 3rem;
    display: flex;
    align-items: flex-end;
    z-index: 2;
    transition: background var(--transition-normal);
}

.project-details {
    width: 100%;
    transform: translateY(20px);
    opacity: 0;
    transition: transform var(--transition-slow), opacity var(--transition-normal);
}

.project-card:hover .project-details {
    transform: translateY(0);
    opacity: 1;
}

.proj-category {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    display: block;
}

.proj-title {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.proj-desc {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    max-width: 80%;
    font-size: 0.95rem;
}

/* Contact Form */
.contact-form-wrapper {
    position: relative;
}

.form-group {
    margin-bottom: 2rem;
    position: relative;
}

.form-label {
    display: block;
    font-family: var(--font-header);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    transition: color var(--transition-fast);
}

.form-input {
    width: 100%;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-primary);
    outline: none;
    transition: all var(--transition-fast);
}

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

.form-input:focus {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.1);
}

.form-input:focus + .form-label {
    color: var(--accent-color);
}

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

/* Errors & Validation */
.error-msg {
    color: #ef4444;
    font-size: 0.75rem;
    position: absolute;
    bottom: -1.25rem;
    left: 0.25rem;
    opacity: 0;
    transform: translateY(-5px);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    pointer-events: none;
}

.form-group.error .form-input {
    border-color: #ef4444;
}

.form-group.error .error-msg {
    opacity: 1;
    transform: translateY(0);
}

/* Submit Loading Spinner */
.btn-spinner {
    display: none;
}

.btn.loading .btn-text {
    display: none;
}

.btn.loading .btn-spinner {
    display: block;
}

/* Success Overlay */
.form-success-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-dark);
    z-index: 10;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.form-success-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.success-icon-wrap {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(var(--accent-rgb), 0.1);
    border: 1px solid rgba(var(--accent-rgb), 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
}

.success-icon-wrap i {
    font-size: 2rem;
    color: var(--accent-color);
}

.success-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.success-content p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

/* Footer styling */
.footer {
    border-top: 1px solid var(--border-color);
    background-color: rgba(var(--bg-dark-rgb), 0.4);
    padding: 6rem 0 3rem;
    position: relative;
    z-index: 2;
}

.footer-top {
    margin-bottom: 4rem;
}

.footer-brand-description {
    color: var(--text-secondary);
    margin-top: 1.5rem;
    margin-bottom: 2rem;
    font-size: 0.9rem;
    max-width: 260px;
}

.footer-socials {
    display: flex;
    gap: 1rem;
}

.footer-socials a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.footer-socials a:hover {
    background: rgba(var(--accent-rgb), 0.1);
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-2px);
}

.footer-title {
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 2.5rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ==========================================================================
   ANIMATIONS & EFFECTS
   ========================================================================== */

/* Keyframe Animations */
@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.5; }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes scroll-wheel {
    0% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(8px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

@keyframes float {
    0% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(1deg); }
    100% { transform: translateY(0px) rotate(0deg); }
}

@keyframes animate-paperplane {
    0% { transform: translate(0, 0) scale(1); opacity: 1; }
    40% { transform: translate(20px, -20px) scale(0.9); opacity: 0; }
    41% { transform: translate(-20px, 20px) scale(0.9); opacity: 0; }
    100% { transform: translate(0, 0) scale(1); opacity: 1; }
}

.animate-paperplane {
    animation: animate-paperplane 1.8s ease-in-out;
}

/* Viewport Scroll Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-up.appear {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.25s; }
.delay-3 { transition-delay: 0.4s; }
.delay-4 { transition-delay: 0.55s; }

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */

@media (max-width: 1024px) {
    html { font-size: 15px; }
    .hero-title { font-size: 3.75rem; }
    .section { padding: 6rem 0; }
    .grid-4-cols { grid-template-columns: repeat(2, 1fr); gap: 3rem; }
}

@media (max-width: 768px) {
    .grid-2-cols, .grid-3-cols {
        grid-template-columns: 1fr;
    }

    .hero-section {
        padding-top: 10rem;
        padding-bottom: 5rem;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-visual-container {
        margin-top: 4rem;
    }

    .floating-card-1 {
        left: -5%;
    }

    .floating-card-2 {
        right: -5%;
    }

    /* Responsive Mobile Navigation */
    .mobile-menu-toggle {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        width: 24px;
        height: 18px;
        background: transparent;
        border: none;
        cursor: pointer;
        z-index: 110;
    }

    .mobile-menu-toggle .bar {
        width: 100%;
        height: 2px;
        background-color: var(--text-primary);
        transition: all var(--transition-fast);
        border-radius: 2px;
    }

    /* Burger animation to 'X' */
    .mobile-menu-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .mobile-menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: rgba(var(--bg-dark-rgb), 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-left: 1px solid var(--border-color);
        padding: 8rem 3rem 3rem;
        transition: right var(--transition-normal);
        z-index: 105;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 2rem;
    }

    .nav-link {
        font-size: 1.25rem;
    }

    .nav-cta {
        display: none;
    }
}

@media (min-width: 769px) {
    .mobile-menu-toggle {
        display: none;
    }
}