/* ==========================================================================
   INDEX - Premium Design System
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
    /* Colors - Gray & Orange Premium Palette (matching logo) */
    --color-primary: #4B4B4B;
    --color-primary-light: #5B5B5B;
    --color-primary-dark: #3B3B3B;

    --color-accent: #F59E0B;
    --color-accent-light: #FBBF24;
    --color-accent-dark: #D97706;

    --color-secondary: #F97316;
    --color-secondary-light: #FB923C;

    /* Neutrals */
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;

    /* Semantic Colors */
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --font-size-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --font-size-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
    --font-size-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
    --font-size-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
    --font-size-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
    --font-size-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
    --font-size-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3.5rem);
    --font-size-5xl: clamp(3rem, 2rem + 5vw, 4.5rem);

    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    --line-height-tight: 1.1;
    --line-height-snug: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;

    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows - Premium Multi-layer */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    --shadow-premium:
        0 0 0 1px rgba(0, 0, 0, 0.03),
        0 2px 4px rgba(0, 0, 0, 0.05),
        0 12px 24px rgba(0, 0, 0, 0.05);

    --shadow-card:
        0 0 0 1px rgba(26, 43, 74, 0.05),
        0 4px 6px rgba(26, 43, 74, 0.05),
        0 20px 40px rgba(26, 43, 74, 0.08);

    --shadow-button:
        0 1px 3px rgba(26, 43, 74, 0.1),
        0 6px 16px rgba(26, 43, 74, 0.15);

    --shadow-glow: 0 0 40px rgba(212, 175, 55, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;

    /* Container */
    --container-max: 1280px;
    --container-padding: clamp(1rem, 5vw, 2rem);
}

/* --------------------------------------------------------------------------
   Base Styles
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-gray-700);
    background-color: var(--color-white);
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
textarea,
select {
    font: inherit;
}

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

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

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-base);
    border-radius: var(--radius-xl);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-button);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-outline {
    background: transparent;
    border-color: var(--color-gray-300);
    color: var(--color-gray-700);
}

.btn-outline:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-400);
}

.btn-icon {
    width: 1.25em;
    height: 1.25em;
    transition: transform var(--transition-base);
}

.btn:hover .btn-icon {
    transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-gray-100);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
}

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

.logo:hover .logo-img {
    opacity: 0.85;
}

.logo-icon {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary);
    letter-spacing: var(--letter-spacing-wide);
}

.logo-tagline {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    letter-spacing: var(--letter-spacing-wider);
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    list-style: none;
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
    transition: color var(--transition-fast);
}

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

.nav-link--cta {
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary);
    color: var(--color-white) !important;
    border-radius: var(--radius-md);
}

.nav-link--cta:hover {
    background: var(--color-primary-light);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    background: transparent;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    transition: all var(--transition-fast);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    position: relative;
    padding: calc(80px + var(--space-20)) 0 var(--space-16);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
        var(--color-gray-50) 0%,
        var(--color-white) 50%,
        rgba(212, 175, 55, 0.05) 100%
    );
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(var(--color-gray-200) 1px, transparent 1px);
    background-size: 32px 32px;
    opacity: 0.5;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    margin-bottom: var(--space-6);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, rgba(245, 158, 11, 0.1) 100%);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
}

.hero-badge-icon {
    color: var(--color-accent);
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-primary);
    margin-bottom: var(--space-6);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-gray-600);
    margin-bottom: var(--space-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-200);
}

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

.hero-stat-value {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    line-height: 1;
}

.hero-stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-top: var(--space-2);
}

/* Hero Clients Marquee */
.hero-clients {
    margin-top: var(--space-16);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-200);
    overflow: hidden;
}

.hero-clients-label {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--space-6);
}

.clients-marquee {
    position: relative;
    overflow: hidden;
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.clients-track {
    display: flex;
    gap: var(--space-12);
    animation: marquee 30s linear infinite;
}

.client-logo {
    flex-shrink: 0;
    padding: var(--space-3) var(--space-6);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-400);
    letter-spacing: var(--letter-spacing-wide);
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* --------------------------------------------------------------------------
   Section Styles
   -------------------------------------------------------------------------- */
.section {
    padding: var(--space-24) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-16);
}

.section-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    margin-bottom: var(--space-4);
    background: linear-gradient(135deg, rgba(26, 43, 74, 0.05) 0%, rgba(26, 43, 74, 0.1) 100%);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wider);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
}

/* --------------------------------------------------------------------------
   Problems Section
   -------------------------------------------------------------------------- */
.problems {
    background: var(--color-gray-50);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}

.problem-card {
    padding: var(--space-8);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-premium);
    transition: all var(--transition-base);
}

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

.problem-icon {
    width: 48px;
    height: 48px;
    padding: var(--space-3);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(239, 68, 68, 0.05) 100%);
    border-radius: var(--radius-lg);
    color: var(--color-error);
    margin-bottom: var(--space-4);
}

.problem-icon svg {
    width: 100%;
    height: 100%;
}

.problem-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.problem-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
}

/* --------------------------------------------------------------------------
   Solution Section
   -------------------------------------------------------------------------- */
.solution-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.solution-text {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--space-6);
    line-height: var(--line-height-relaxed);
}

.solution-features {
    list-style: none;
    margin-bottom: var(--space-8);
}

.solution-feature {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
}

.check-icon {
    width: 24px;
    height: 24px;
    color: var(--color-success);
    flex-shrink: 0;
}

/* Dashboard Preview */
.solution-visual {
    position: relative;
}

.dashboard-preview {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
}

.dashboard-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--color-gray-100);
    border-bottom: 1px solid var(--color-gray-200);
}

.dashboard-dots {
    display: flex;
    gap: var(--space-2);
}

.dashboard-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-gray-300);
}

.dashboard-dots span:first-child { background: #EF4444; }
.dashboard-dots span:nth-child(2) { background: #F59E0B; }
.dashboard-dots span:last-child { background: #10B981; }

.dashboard-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
}

.dashboard-content {
    padding: var(--space-8);
}

.dashboard-chart {
    display: flex;
    align-items: flex-end;
    gap: var(--space-4);
    height: 160px;
    margin-bottom: var(--space-6);
}

.chart-bar {
    flex: 1;
    height: var(--height);
    background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    animation: chart-grow 1s ease-out forwards;
    transform-origin: bottom;
}

@keyframes chart-grow {
    from { transform: scaleY(0); }
    to { transform: scaleY(1); }
}

.dashboard-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.metric {
    padding: var(--space-4);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    text-align: center;
}

.metric-value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-success);
}

.metric-label {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

/* --------------------------------------------------------------------------
   Modules Section
   -------------------------------------------------------------------------- */
.modules {
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-50) 100%);
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
}

.module-card {
    position: relative;
    padding: var(--space-8);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.module-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-card);
    transform: translateY(-4px);
}

.module-card--featured {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border: none;
}

.module-card--featured .module-number,
.module-card--featured .module-title,
.module-card--featured .module-desc,
.module-card--featured .module-features li {
    color: var(--color-white);
}

.module-card--featured .module-icon {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-accent);
}

.module-number {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-400);
    letter-spacing: var(--letter-spacing-wider);
    margin-bottom: var(--space-4);
}

.module-icon {
    width: 56px;
    height: 56px;
    padding: var(--space-3);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, rgba(245, 158, 11, 0.1) 100%);
    border-radius: var(--radius-lg);
    color: var(--color-accent);
    margin-bottom: var(--space-4);
}

.module-icon svg {
    width: 100%;
    height: 100%;
}

.module-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}

.module-desc {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-4);
}

.module-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    list-style: none;
}

.module-features li {
    padding: var(--space-1) var(--space-3);
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
}

.module-card--featured .module-features li {
    background: rgba(255, 255, 255, 0.15);
}

/* --------------------------------------------------------------------------
   Tech Stack Section
   -------------------------------------------------------------------------- */
.tech-stack {
    background: var(--color-primary);
    color: var(--color-white);
}

.tech-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-16);
    align-items: center;
}

.tech-stack .section-badge {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-accent);
}

.tech-stack .section-title {
    color: var(--color-white);
}

.tech-text {
    font-size: var(--font-size-lg);
    color: var(--color-gray-300);
    line-height: var(--line-height-relaxed);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-6);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.tech-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.tech-icon {
    width: 48px;
    height: 48px;
    padding: var(--space-3);
    background: rgba(212, 175, 55, 0.2);
    border-radius: var(--radius-lg);
    color: var(--color-accent);
    margin-bottom: var(--space-3);
}

.tech-icon svg {
    width: 100%;
    height: 100%;
}

.tech-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--space-1);
}

.tech-desc {
    font-size: var(--font-size-xs);
    color: var(--color-gray-400);
}

/* --------------------------------------------------------------------------
   Advantages Section
   -------------------------------------------------------------------------- */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
}

.advantage-card {
    padding: var(--space-8);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.advantage-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-card);
}

.advantage-icon {
    width: 56px;
    height: 56px;
    padding: var(--space-3);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, rgba(245, 158, 11, 0.1) 100%);
    border-radius: var(--radius-lg);
    color: var(--color-accent);
    margin-bottom: var(--space-4);
}

.advantage-icon svg {
    width: 100%;
    height: 100%;
}

.advantage-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.advantage-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
}

/* --------------------------------------------------------------------------
   Clients Section
   -------------------------------------------------------------------------- */
.clients {
    background: var(--color-gray-50);
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-16);
}

.client-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-8) var(--space-6);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.client-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.client-name {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.client-type {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

/* Testimonial */
.clients-testimonial {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-10);
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-card);
    text-align: center;
}

.testimonial-quote {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-8);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
}

.testimonial-avatar {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 50%;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

.testimonial-info {
    text-align: left;
}

.testimonial-name {
    display: block;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
}

.testimonial-position {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* --------------------------------------------------------------------------
   About Section
   -------------------------------------------------------------------------- */
.about-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.about-text {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-4);
}

.about-stats {
    display: flex;
    gap: var(--space-8);
    margin-top: var(--space-8);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-200);
}

.about-stat-value {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    line-height: 1;
}

.about-stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* About Cards */
.about-visual {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.about-card {
    padding: var(--space-6);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-premium);
}

.about-card-icon {
    width: 48px;
    height: 48px;
    padding: var(--space-3);
    background: linear-gradient(135deg, rgba(26, 43, 74, 0.1) 0%, rgba(26, 43, 74, 0.05) 100%);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.about-card-icon svg {
    width: 100%;
    height: 100%;
}

.about-card-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.about-card-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

/* --------------------------------------------------------------------------
   CTA Section
   -------------------------------------------------------------------------- */
.cta {
    background: linear-gradient(135deg, var(--color-gray-50) 0%, rgba(212, 175, 55, 0.05) 100%);
}

.cta-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
    padding: var(--space-12) var(--space-16);
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-card);
}

.cta-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.cta-text {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact {
    background: var(--color-white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-16);
}

.contact-text {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    margin-bottom: var(--space-8);
    line-height: var(--line-height-relaxed);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.contact-icon {
    width: 48px;
    height: 48px;
    padding: var(--space-3);
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.contact-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-bottom: var(--space-1);
}

.contact-value {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
}

a.contact-value:hover {
    color: var(--color-accent);
}

/* Contact Form */
.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    padding: var(--space-10);
    background: var(--color-gray-50);
    border-radius: var(--radius-2xl);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group--full {
    grid-column: span 2;
}

.form-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    margin-bottom: var(--space-2);
}

.form-input,
.form-textarea {
    padding: var(--space-4);
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    color: var(--color-gray-800);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 43, 74, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-gray-400);
}

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

.form-submit {
    grid-column: span 2;
    justify-self: start;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    padding: var(--space-16) 0 var(--space-8);
    background: #000000;
    color: var(--color-white);
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-16);
    margin-bottom: var(--space-12);
    padding-bottom: var(--space-12);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo-img {
    height: 44px;
    filter: invert(1) hue-rotate(180deg);
}

.footer-brand .logo-icon {
    color: var(--color-white);
}

.footer-brand .logo-tagline {
    color: var(--color-gray-400);
}

.footer-desc {
    margin-top: var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    max-width: 400px;
    line-height: var(--line-height-relaxed);
}

.footer-links {
    display: flex;
    gap: var(--space-16);
}

.footer-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wider);
}

.footer-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-menu a {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-menu a:hover {
    color: var(--color-white);
}

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

.footer-copyright {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.footer-legal {
    display: flex;
    gap: var(--space-6);
}

.footer-legal a {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: var(--color-white);
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fade-in 0.6s ease-out forwards;
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .solution-wrapper,
    .about-wrapper,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .tech-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .module-card--featured {
        grid-column: span 1;
    }

    .cta-wrapper {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        padding: var(--space-4);
        background: var(--color-white);
        border-bottom: 1px solid var(--color-gray-200);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

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

    .nav-menu li {
        width: 100%;
    }

    .nav-link {
        display: block;
        padding: var(--space-4);
        border-bottom: 1px solid var(--color-gray-100);
    }

    .nav-link--cta {
        margin-top: var(--space-4);
        text-align: center;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-6);
    }

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

    .footer-main {
        grid-template-columns: 1fr;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-8);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }

    .contact-form {
        grid-template-columns: 1fr;
    }

    .form-group--full {
        grid-column: span 1;
    }

    .form-submit {
        grid-column: span 1;
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-3xl);
        margin-bottom: var(--space-4);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

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