/* ==========================================
   CSS Custom Properties (Variables)
   ========================================== */
:root {
    /* Colors */
    --bg-void: #050709;
    --bg-elevated: #0d1117;
    --bg-card: #161b22;
    --bg-hover: #21262d;

    /* Accent colors */
    --accent-primary: #00e5cc;
    --accent-secondary: #00b4d8;
    --accent-tertiary: #7c3aed;
    --accent-glow: rgba(0, 229, 204, 0.4);

    /* Text colors */
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;

    /* Status colors */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;

    /* Typography */
    --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'IBM Plex Mono', 'Fira Code', monospace;

    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-default: rgba(255, 255, 255, 0.12);
    --border-strong: rgba(255, 255, 255, 0.2);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 60px var(--accent-glow);

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

/* ==========================================
   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-sans);
    background-color: var(--bg-void);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Noise texture overlay */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    opacity: 0.025;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    z-index: 9999;
}

/* Focus visible for accessibility */
:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

/* Selection */
::selection {
    background: var(--accent-primary);
    color: var(--bg-void);
}

/* Links */
a {
    color: inherit;
    text-decoration: none;
}

/* Images */
img, svg {
    display: block;
    max-width: 100%;
}

/* Lists */
ul, ol {
    list-style: none;
}

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

/* ==========================================
   Utility Classes
   ========================================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.gradient-text {
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 50%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ==========================================
   Navigation
   ========================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: rgba(5, 7, 9, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    z-index: 100;
    display: flex;
    align-items: center;
}

.nav__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-weight: 700;
    font-size: 1.25rem;
}

.nav__logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1rem;
    color: var(--bg-void);
}

.nav__logo-img {
    height: 40px;
    width: auto;
    transition: opacity var(--transition-fast);
}

.nav__logo:hover .nav__logo-img {
    opacity: 0.8;
}

.nav__links {
    display: flex;
    gap: var(--space-xl);
}

.nav__link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--space-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link.active {
    color: var(--accent-primary);
}

.nav__link.active::after,
.nav__link:hover::after {
    width: 100%;
}

.nav__cta {
    padding: var(--space-sm) var(--space-lg);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--bg-void);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
}

.nav__toggle-bar {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-void);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-subtle);
    z-index: 99;
    transform: translateY(-100%);
    opacity: 0;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu__link {
    display: block;
    padding: var(--space-md) 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    border-bottom: 1px solid var(--border-subtle);
    transition: color var(--transition-fast);
}

.mobile-menu__link:last-child {
    border-bottom: none;
}

.mobile-menu__link:hover {
    color: var(--accent-primary);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 140px var(--space-lg) var(--space-4xl);
    position: relative;
    overflow: hidden;
}

/* Stronger glow effect */
.hero::before {
    content: '';
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 900px;
    height: 900px;
    background: radial-gradient(circle, rgba(0, 229, 204, 0.25) 0%, rgba(0, 180, 216, 0.1) 40%, transparent 70%);
    pointer-events: none;
    animation: pulse-glow 4s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: 60%;
    left: 30%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
    pointer-events: none;
    animation: pulse-glow 5s ease-in-out infinite reverse;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.7; transform: translate(-50%, -50%) scale(1.1); }
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.hero__badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: badge-pulse 2s infinite;
}

@keyframes badge-pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
}

.hero__subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}

.hero__buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.btn--primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--bg-void);
}

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

.btn--secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
}

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

.btn--icon {
    padding: var(--space-md);
}

/* ==========================================
   Stats Section
   ========================================== */
.stats {
    padding: var(--space-4xl) var(--space-lg);
    background: var(--bg-elevated);
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.stats__card {
    text-align: center;
    padding: var(--space-xl);
    background: var(--bg-void);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.stats__card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 0 40px rgba(0, 229, 204, 0.1);
}

.stats__number {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: var(--space-sm);
}

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

/* ==========================================
   Section Common Styles
   ========================================== */
.section {
    padding: var(--space-4xl) var(--space-lg);
}

.section--alt {
    background: var(--bg-elevated);
}

.section__header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section__tag {
    display: inline-block;
    padding: var(--space-sm) var(--space-md);
    background: rgba(0, 229, 204, 0.1);
    color: var(--accent-primary);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.section__title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-md);
    letter-spacing: -0.01em;
}

.section__subtitle {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   Problems Section
   ========================================== */
.problems__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.problem-card {
    padding: var(--space-xl);
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    transition: border-color var(--transition-base), transform var(--transition-base);
}

.problem-card:hover {
    border-color: var(--danger);
    transform: translateY(-4px);
}

.problem-card__icon {
    width: 56px;
    height: 56px;
    background: rgba(239, 68, 68, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--danger);
}

.problem-card__icon svg {
    width: 28px;
    height: 28px;
}

.problem-card__title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.problem-card__text {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==========================================
   Services Section
   ========================================== */
.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.service-card {
    padding: var(--space-xl) var(--space-lg);
    background: var(--bg-void);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.service-card__icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(0, 229, 204, 0.15), rgba(0, 180, 216, 0.15));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    color: var(--accent-primary);
}

.service-card__icon svg {
    width: 28px;
    height: 28px;
}

.service-card__title {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.service-card__text {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.service-card__features {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.service-card__feature {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.service-card__feature svg {
    width: 18px;
    height: 18px;
    color: var(--accent-primary);
    flex-shrink: 0;
}

/* ==========================================
   Process Section
   ========================================== */
.process__steps {
    display: flex;
    justify-content: space-between;
    position: relative;
}

.process__steps::before {
    content: '';
    position: absolute;
    top: 44px;
    left: 12%;
    right: 12%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
}

.process__step {
    text-align: center;
    position: relative;
    z-index: 1;
    flex: 1;
    max-width: 200px;
}

.process__number {
    width: 88px;
    height: 88px;
    background: var(--bg-elevated);
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin: 0 auto var(--space-lg);
    transition: background var(--transition-base), color var(--transition-base), box-shadow var(--transition-base);
}

.process__step:hover .process__number {
    background: var(--accent-primary);
    color: var(--bg-void);
    box-shadow: var(--shadow-glow);
}

.process__title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.process__text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ==========================================
   Automation Section
   ========================================== */
.automation__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.automation__title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: var(--space-lg);
    letter-spacing: -0.01em;
}

.automation__text {
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.automation__list {
    display: flex;
    flex-direction: column;
}

.automation__item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-subtle);
}

.automation__item:last-child {
    border-bottom: none;
}

.automation__icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--bg-void);
}

.automation__icon svg {
    width: 22px;
    height: 22px;
}

.automation__item-title {
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

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

.automation__visual {
    background: var(--bg-void);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-subtle);
    overflow: hidden;
}

.code-block {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 2;
}

.code-block__line {
    display: block;
    padding: 2px 0;
}

.code-block__line--comment { color: var(--text-muted); }
.code-block__line--keyword { color: var(--accent-tertiary); }
.code-block__line--function { color: var(--accent-secondary); }
.code-block__line--string { color: var(--success); }
.code-block__line--variable { color: var(--accent-primary); }

/* ==========================================
   Contact Section
   ========================================== */
.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
}

.contact__title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: var(--space-lg);
}

.contact__text {
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.contact__methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact__method {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.contact__method-icon {
    width: 52px;
    height: 52px;
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

.contact__method-icon svg {
    width: 24px;
    height: 24px;
}

.contact__method-label {
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.contact__method-value {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Form Styles */
.form {
    background: var(--bg-elevated);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
}

.form__group {
    margin-bottom: var(--space-lg);
}

.form__label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
}

.form__input,
.form__textarea,
.form__select {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-void);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input::placeholder,
.form__textarea::placeholder {
    color: var(--text-muted);
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 229, 204, 0.1);
}

.form__input.error,
.form__textarea.error {
    border-color: var(--danger);
}

.form__error {
    color: var(--danger);
    font-size: 0.8rem;
    margin-top: var(--space-xs);
    display: none;
}

.form__error.visible {
    display: block;
}

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

.form__select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238b949e' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form__submit {
    width: 100%;
    padding: var(--space-md) var(--space-xl);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--bg-void);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
}

.form__submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.form__submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form__success {
    display: none;
    text-align: center;
    padding: var(--space-xl);
}

.form__success.visible {
    display: block;
}

.form__success-icon {
    width: 64px;
    height: 64px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    color: var(--success);
}

.form__success-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.form__success-text {
    color: var(--text-secondary);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    padding: var(--space-3xl) var(--space-lg);
    background: var(--bg-elevated);
    border-top: 1px solid var(--border-subtle);
}

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

.footer__links {
    display: flex;
    gap: var(--space-xl);
}

.footer__link {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer__copy {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==========================================
   Scroll to Top Button
   ========================================== */
.scroll-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base), box-shadow var(--transition-fast);
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-void);
}

.scroll-top svg {
    width: 24px;
    height: 24px;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover {
    box-shadow: var(--shadow-glow);
}

/* ==========================================
   Loading State
   ========================================== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .process__steps {
        flex-wrap: wrap;
        gap: var(--space-xl);
        justify-content: center;
    }

    .process__steps::before {
        display: none;
    }

    .process__step {
        flex: 0 0 calc(50% - var(--space-md));
    }
}

@media (max-width: 768px) {
    .nav__links,
    .nav__cta {
        display: none;
    }

    .nav__toggle {
        display: flex;
    }

    .mobile-menu {
        display: block;
    }

    .stats__grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-md);
    }

    .stats__card {
        padding: var(--space-lg);
    }

    .stats__number {
        font-size: 2.25rem;
    }

    .problems__grid {
        grid-template-columns: 1fr;
    }

    .services__grid {
        grid-template-columns: 1fr;
    }

    .automation__grid {
        grid-template-columns: 1fr;
    }

    .automation__visual {
        order: -1;
    }

    .contact__grid {
        grid-template-columns: 1fr;
    }

    .process__step {
        flex: 0 0 100%;
        max-width: 280px;
    }

    .footer__inner {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }

    .footer__links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding-top: 120px;
    }

    .stats__grid {
        grid-template-columns: 1fr;
    }

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

    .hero__buttons .btn {
        width: 100%;
    }
}