/* ============================================
   KEY SOLUTIONS — Design System & Styles
   Dark Mode Premium + Light Mode Toggle
   ============================================ */

/* --- Design Tokens (CSS Custom Properties) --- */
:root {
    /* Colores principales */
    --color-primary: #137fec;
    --color-primary-light: #3d9ef5;
    --color-primary-dark: #0c5fba;
    --color-accent: #6c5ce7;

    /* Dark mode (default) */
    --bg-primary: #0a0e17;
    --bg-secondary: #0f172a;
    --bg-tertiary: #1e293b;
    --bg-card: rgba(15, 23, 42, 0.8);
    --bg-glass: rgba(10, 14, 23, 0.7);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(19, 127, 236, 0.3);
    --shadow-glow: 0 0 30px rgba(19, 127, 236, 0.15);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);

    /* Tipografía */
    --font-display: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --fs-hero: clamp(1.75rem, 3.5vw, 3rem);
    --fs-h1: clamp(2rem, 4vw, 3.5rem);
    --fs-h2: clamp(1.5rem, 3vw, 2.5rem);
    --fs-h3: 1.25rem;
    --fs-body: 1.063rem;
    --fs-small: 0.875rem;
    --fs-xs: 0.75rem;
    --lh-body: 1.7;
    --lh-heading: 1.1;

    /* Espaciado */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    --space-section: clamp(4rem, 10vw, 8rem);

    /* Bordes y radios */
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Transiciones */
    --transition-fast: 200ms ease;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease;

    /* Z-index */
    --z-navbar: 100;
    --z-overlay: 50;
    --z-modal: 200;
}

/* --- Light Mode Override --- */
[data-theme="light"] {
    --bg-primary: #f0f4f8;
    --bg-secondary: #e2e8f0;
    --bg-tertiary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.9);
    --bg-glass: rgba(255, 255, 255, 0.75);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(19, 127, 236, 0.3);
    --shadow-glow: 0 0 30px rgba(19, 127, 236, 0.1);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.08);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: var(--font-display);
    font-size: var(--fs-body);
    line-height: var(--lh-body);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-slow), color var(--transition-slow);
    overflow-x: hidden;
}

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

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

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

ul,
ol {
    list-style: none;
}

/* --- Typography --- */
h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: var(--lh-heading);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

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

/* --- Layout --- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: var(--space-section) 0;
    position: relative;
}

.section-dark {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

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

.grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

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

/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-navbar);
    width: 95%;
    max-width: 1100px;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    top: 0.75rem;
}

.navbar-inner {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all var(--transition-base);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand .logo-icon {
    color: var(--color-primary);
    font-size: 1.75rem;
}

.navbar-brand .logo-text {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.navbar-menu {
    display: none;
    align-items: center;
    gap: 2rem;
}

.navbar-menu a {
    font-size: var(--fs-small);
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.navbar-menu a:hover {
    color: var(--color-primary);
}

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

.navbar-menu a:hover::after {
    width: 100%;
}

/* Nav Dropdown */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-trigger {
    display: flex !important;
    align-items: center;
    gap: 0.25rem;
}

.nav-dropdown-content {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%);
    min-width: 240px;
    background: var(--bg-tertiary);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0.5rem;
    box-shadow: var(--shadow-card);
    z-index: 10;
}

/* Puente invisible para mantener el hover al mover el mouse */
.nav-dropdown-content::before {
    content: '';
    position: absolute;
    top: -16px;
    left: 0;
    width: 100%;
    height: 16px;
}

.nav-dropdown:hover .nav-dropdown-content {
    display: block;
}

.nav-dropdown-content a {
    display: flex !important;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem !important;
    border-radius: var(--radius-md);
    font-size: var(--fs-small) !important;
    white-space: nowrap;
    transition: background var(--transition-fast);
}

.nav-dropdown-content a::after {
    display: none !important;
}

.nav-dropdown-content a:hover {
    background: rgba(19, 127, 236, 0.08);
}

.nav-dropdown-content a .material-symbols-outlined {
    font-size: 1.25rem;
    color: var(--color-primary);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: 1.25rem;
}

.theme-toggle:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-primary);
    color: white;
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: var(--fs-small);
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary:hover {
    background: var(--color-primary-light);
    box-shadow: 0 0 30px rgba(19, 127, 236, 0.3);
    transform: translateY(-1px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    padding: 0.75rem 2rem;
    border-radius: var(--radius-lg);
    font-size: var(--fs-body);
    font-weight: 700;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-primary);
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: var(--fs-body);
}

.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
    border-radius: 2px;
}

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

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--bg-primary);
    z-index: calc(var(--z-navbar) - 1);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.mobile-menu.active {
    display: flex;
    opacity: 1;
}

.mobile-menu a {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.mobile-menu a:hover {
    color: var(--color-primary);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 10rem;
    overflow: hidden;
}

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

.hero-bg .orb-1 {
    position: absolute;
    top: 15%;
    left: 20%;
    width: 500px;
    height: 500px;
    background: rgba(19, 127, 236, 0.12);
    border-radius: 50%;
    filter: blur(120px);
    animation: pulse-slow 8s ease-in-out infinite;
}

.hero-bg .orb-2 {
    position: absolute;
    bottom: 20%;
    right: 15%;
    width: 400px;
    height: 400px;
    background: rgba(108, 92, 231, 0.08);
    border-radius: 50%;
    filter: blur(120px);
    animation: pulse-slow 10s ease-in-out infinite reverse;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero .grid-2 {
    gap: var(--space-2xl);
}

.hero-text {
    max-width: 640px;
}

.hero-label {
    display: inline-block;
    color: var(--color-primary);
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: var(--space-md);
}

.hero-title {
    font-size: var(--fs-hero);
    font-weight: 900;
    letter-spacing: -0.04em;
    margin-bottom: var(--space-md);
}

.hero-title .highlight {
    color: var(--color-primary);
    font-style: italic;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.hero-bullets {
    margin-bottom: var(--space-xl);
}

.hero-bullets li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: var(--fs-body);
}

.hero-bullets li .material-symbols-outlined {
    color: var(--color-primary);
    font-size: 1.25rem;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.hero-image {
    position: relative;
}

.hero-image .img-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
}

.hero-image .img-wrapper::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-xl);
    z-index: -1;
    opacity: 0.2;
    filter: blur(8px);
    transition: opacity var(--transition-slow);
}

.hero-image .img-wrapper:hover::before {
    opacity: 0.4;
}

.hero-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    filter: grayscale(0.1);
    transition: filter var(--transition-slow);
}

.hero-image img:hover {
    filter: grayscale(0);
}

.hero-scroll-hint {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    color: var(--text-muted);
}

/* --- Section Headers --- */
.section-label {
    display: inline-block;
    color: var(--color-primary);
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: var(--space-sm);
}

.section-title {
    font-size: var(--fs-h1);
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.063rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 700px;
}

.section-header {
    margin-bottom: var(--space-2xl);
}

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

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

/* --- Cards --- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    z-index: -1;
    transition: opacity var(--transition-base);
    filter: blur(4px);
}

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

.card:hover::before {
    opacity: 0.15;
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(19, 127, 236, 0.1);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.card-title {
    font-size: var(--fs-h3);
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.card-text {
    color: var(--text-secondary);
    font-size: var(--fs-small);
    line-height: 1.7;
}

.card-list {
    margin-top: var(--space-sm);
}

.card-list li {
    position: relative;
    padding: 0.375rem 0 0.375rem 1.25rem;
    color: var(--text-secondary);
    font-size: var(--fs-small);
}

.card-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
}

/* --- Text Gradient Utility --- */
.text-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Software Factory --- */
.factory-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

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

.factory-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: var(--fs-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.factory-badge.no-code {
    background: rgba(37, 211, 102, 0.12);
    color: #25D366;
    border: 1px solid rgba(37, 211, 102, 0.25);
}

.factory-badge.low-code {
    background: rgba(19, 127, 236, 0.12);
    color: var(--color-primary);
    border: 1px solid rgba(19, 127, 236, 0.25);
}

.factory-badge.full-code {
    background: rgba(108, 92, 231, 0.12);
    color: var(--color-accent);
    border: 1px solid rgba(108, 92, 231, 0.25);
}

.factory-meta {
    margin-top: auto;
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-muted);
    font-size: var(--fs-xs);
}

.factory-meta span {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

/* --- Automation Section --- */
.automation-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.automation-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 400px;
    filter: saturate(0.9);
    transition: filter var(--transition-slow);
}

.automation-image:hover img {
    filter: saturate(1.1);
}

.automation-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.automation-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    transition: all var(--transition-base);
}

.automation-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
}

.automation-card h4 {
    font-size: 1.063rem;
    font-weight: 700;
    margin-bottom: 0.375rem;
}

.automation-card p {
    color: var(--text-secondary);
    font-size: var(--fs-small);
    line-height: 1.6;
}

/* --- Empresa Section (Misión, Visión, Objetivos) --- */
.empresa-col h3 {
    font-size: var(--fs-h2);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.empresa-col h3 .material-symbols-outlined {
    color: var(--color-primary);
    font-size: 1.75rem;
}

.empresa-list li {
    position: relative;
    padding: 0.5rem 0 0.5rem 1.5rem;
    color: var(--text-secondary);
}

.empresa-list li::before {
    content: '●';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-size: 0.5rem;
    top: 0.75rem;
}

.empresa-objectives li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
}

.empresa-objectives>li {
    font-weight: 600;
    color: var(--text-primary);
}

.empresa-objectives .sub-list {
    padding-left: 1.5rem;
    margin-top: 0.25rem;
}

.empresa-objectives .sub-list li {
    font-weight: 400;
    color: var(--text-secondary);
    font-size: var(--fs-small);
    position: relative;
    padding-left: 1rem;
}

.empresa-objectives .sub-list li::before {
    content: '○';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-size: 0.5rem;
}

.empresa-close {
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-style: italic;
}

/* --- Methodology --- */
.methodology {
    position: relative;
    overflow: hidden;
}

.methodology-bg-img {
    position: absolute;
    inset: 0;
    opacity: 0.15;
    z-index: 0;
}

.methodology-bg-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.methodology-content {
    position: relative;
    z-index: 1;
}

.methodology-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.step-card {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

[data-theme="light"] .step-card {
    background: rgba(255, 255, 255, 0.6);
}

.step-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.step-number {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-full);
}

.step-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.375rem;
}

.step-card p {
    color: var(--text-secondary);
    font-size: var(--fs-small);
    line-height: 1.6;
}

/* --- Equipo / Experiencia --- */
.pilar-card {
    text-align: center;
    padding: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.pilar-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
}

.pilar-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(19, 127, 236, 0.1);
    border-radius: var(--radius-lg);
}

.pilar-icon .material-symbols-outlined {
    font-size: 2rem;
    color: var(--color-primary);
}

.pilar-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.pilar-card p {
    color: var(--text-secondary);
    font-size: var(--fs-small);
    line-height: 1.6;
}

/* --- Casos de Éxito --- */
.case-card {
    padding: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
}

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

.case-metric {
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.case-card h4 {
    font-size: 1.063rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.case-card p {
    color: var(--text-secondary);
    font-size: var(--fs-small);
}

/* --- Contact --- */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-group label {
    font-size: var(--fs-small);
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    font-family: var(--font-display);
    font-size: var(--fs-body);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
    width: 100%;
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(19, 127, 236, 0.15);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}

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

.form-success {
    display: none;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    padding: var(--space-md);
    background: rgba(37, 211, 102, 0.08);
    border: 1px solid rgba(37, 211, 102, 0.2);
    border-radius: var(--radius-md);
}

.form-success.visible {
    display: flex;
}

.form-success p {
    font-size: var(--fs-small);
    color: var(--text-primary);
    line-height: 1.5;
}

.contact-sidebar {
    display: flex;
    flex-direction: column;
}

.channel-card {
    padding: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.channel-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
}

.channel-card h4 {
    font-size: var(--fs-h3);
    font-weight: 700;
    margin-bottom: var(--space-xs);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.channel-card h4 .material-symbols-outlined {
    color: var(--color-primary);
}

.channel-card p {
    color: var(--text-secondary);
    font-size: var(--fs-small);
    line-height: 1.7;
}

.contact-close {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: var(--fs-small);
}

.contact-close strong {
    color: var(--text-primary);
}

/* --- Footer --- */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand .logo-icon {
    color: var(--color-primary);
    font-size: 1.75rem;
}

.footer-brand .logo-text {
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: var(--fs-small);
    margin-top: var(--space-sm);
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--color-primary);
    color: white;
}

.footer-col h4 {
    font-size: var(--fs-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.footer-col ul li {
    margin-bottom: var(--space-sm);
}

.footer-col ul li a {
    color: var(--text-muted);
    font-size: var(--fs-small);
    transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    text-align: center;
}

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

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

.footer-bottom-links a {
    color: var(--text-muted);
    font-size: var(--fs-xs);
    transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
    color: var(--text-secondary);
}

/* --- Animations --- */
@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    40% {
        transform: translateX(-50%) translateY(-10px);
    }

    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes pulse-slow {

    0%,
    100% {
        opacity: 0.6;
        transform: scale(1);
    }

    50% {
        opacity: 1;
        transform: scale(1.05);
    }
}

@keyframes fade-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Scroll Reveal --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 {
    transition-delay: 100ms;
}

.reveal-delay-2 {
    transition-delay: 200ms;
}

.reveal-delay-3 {
    transition-delay: 300ms;
}

.reveal-delay-4 {
    transition-delay: 400ms;
}

/* --- Responsive --- */

/* Tablet (768px+) */
@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr 1fr;
    }

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

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

    .contact-layout {
        grid-template-columns: 3fr 1fr;
    }

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

    .methodology-steps {
        grid-template-columns: 1fr 1fr;
    }

    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }

    .navbar-menu {
        display: flex;
    }

    .hamburger {
        display: none;
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }

    .methodology-steps {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Large Desktop (1280px+) */
@media (min-width: 1280px) {
    .container {
        padding: 0 2rem;
    }
}