/* ====================================================
   GRUPO INTEGRACIÓN — Global Design System
   ==================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
    --color-primary: #1c385f;
    --color-primary-light: #2a528a;
    --color-accent: #FF6B00;
    --color-accent-hover: #e65f00;
    --color-secondary: #4E5B61;
    --color-bg-dark: #13181f;
    --color-bg-darker: #0f1216;
    --color-bg-card: #1e242c;
    --color-bg-light: #f6f7f8;
    --color-border-dark: #2b3036;
    --color-text-light: #94a3b8;
    --color-text-muted: #64748b;
    --color-white: #ffffff;
    --font-display: 'Inter', sans-serif;
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .15);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, .2);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, .3);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, .4);
    --shadow-accent: 0 4px 14px rgba(255, 107, 0, .35);
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 500ms ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-display);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    line-height: 1.6;
}

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

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

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

input,
select,
textarea {
    font-family: inherit;
}

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

/* ---------- Focus Visible (Accessibility) ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    box-shadow: 0 0 0 4px rgba(255, 107, 0, .2);
}

/* ---------- Scrollbar ---------- */
html {
    scrollbar-width: thin;
    scrollbar-color: var(--color-border-dark) var(--color-bg-dark);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-dark);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

/* ---------- Material Icons ---------- */
.material-symbols-outlined {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
    vertical-align: middle;
}

/* ====================================================
   SHARED HEADER / NAVBAR
   ==================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2.5rem;
    height: 64px;
    border-bottom: 1px solid var(--color-border-dark);
    background: rgba(19, 24, 31, .95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.site-header.light-header {
    background: rgba(255, 255, 255, .97);
    border-bottom-color: #e5e7eb;
}

.site-header .logo-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.site-header .logo-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 1.5rem;
}

.site-header .logo-text {
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: -0.015em;
    line-height: 1.1;
}

.site-header .logo-subtitle {
    display: block;
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    opacity: .6;
}

/* Desktop Nav */
.desktop-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.desktop-nav a {
    font-size: 0.8125rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
    white-space: nowrap;
}

.desktop-nav a:not(.nav-cta)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

.desktop-nav a:not(.nav-cta):hover::after {
    width: 100%;
}

.desktop-nav .nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 36px;
    padding: 0 1.25rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.8125rem;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    color: var(--color-white);
    font-size: 1.5rem;
    padding: 0.25rem;
}

/* Mobile Menu Overlay */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    background: rgba(0, 0, 0, .6);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-menu.is-open {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-panel {
    position: absolute;
    top: 0;
    right: 0;
    width: min(85%, 360px);
    height: 100%;
    background: var(--color-bg-dark);
    border-left: 1px solid var(--color-border-dark);
    padding: 2rem 1.5rem;
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
}

.mobile-menu.is-open .mobile-menu-panel {
    transform: translateX(0);
}

.mobile-menu-panel .light-panel {
    background: var(--color-white);
    border-left-color: #e5e7eb;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.mobile-menu-close {
    font-size: 1.5rem;
    color: var(--color-white);
}

.mobile-menu-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.mobile-menu-nav a {
    display: block;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    transition: background var(--transition-fast);
}

.mobile-menu-nav a:hover {
    background: rgba(255, 255, 255, .05);
}

.mobile-menu-nav .mobile-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 48px;
    margin-top: 1rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1rem;
}

/* ====================================================
   BUTTONS
   ==================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    height: 48px;
    padding: 0 2rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn-accent:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 14px rgba(28, 56, 95, .35);
}

.btn-primary:hover {
    background: var(--color-primary-light);
}

.btn-outline {
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .15);
    color: var(--color-white);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, .15);
}

.btn-outline-dark {
    background: transparent;
    border: 2px solid var(--color-white);
    color: var(--color-white);
}

.btn-outline-dark:hover {
    background: var(--color-white);
    color: var(--color-primary);
}

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

.btn-white:hover {
    background: #f1f5f9;
}

/* ====================================================
   FORM STYLES
   ==================================================== */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.375rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

/* Dark form variant */
.form-input.dark-input,
.form-select.dark-input,
.form-textarea.dark-input {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-dark);
    color: var(--color-white);
}

.form-input.dark-input::placeholder,
.form-textarea.dark-input::placeholder {
    color: #475569;
}

.form-input.dark-input:focus,
.form-select.dark-input:focus,
.form-textarea.dark-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(255, 107, 0, .2);
}

.form-input.dark-input.field-invalid {
    border-color: #ef4444;
    box-shadow: 0 0 0 2px rgba(239, 68, 68, .15);
}

/* Light form variant */
.form-input.light-input,
.form-select.light-input,
.form-textarea.light-input {
    background: var(--color-white);
    border: 1px solid #d1d5db;
    color: #1e293b;
}

.form-input.light-input::placeholder,
.form-textarea.light-input::placeholder {
    color: #9ca3af;
}

.form-input.light-input:focus,
.form-select.light-input:focus,
.form-textarea.light-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(28, 56, 95, .15);
}

.form-select {
    appearance: none;
    cursor: pointer;
}

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

/* ====================================================
   SECTION UTILITIES
   ==================================================== */
.section {
    padding: 5rem 1.5rem;
}

.section-narrow {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    margin-bottom: 3rem;
}

.section-label {
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

/* ====================================================
   CARDS
   ==================================================== */
.card {
    padding: 1.5rem;
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.card-dark {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-dark);
}

.card-dark:hover {
    border-color: rgba(255, 107, 0, .4);
    box-shadow: 0 8px 30px rgba(0, 0, 0, .3);
    transform: translateY(-2px);
}

.card-light {
    background: var(--color-white);
    border: 1px solid #e5e7eb;
    box-shadow: var(--shadow-sm);
}

.card-light:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    transition: all var(--transition-fast);
    font-size: 1.75rem;
}

/* ====================================================
   FOOTER
   ==================================================== */
.site-footer {
    border-top: 1px solid var(--color-border-dark);
    padding: 4rem 2.5rem 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
}

.footer-links h4 {
    font-weight: 700;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.625rem;
}

.footer-links a {
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .05);
    padding-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    font-size: 0.75rem;
}

/* ====================================================
   ANIMATIONS
   ==================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }

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

@keyframes pulse-glow {

    0%,
    100% {
        box-shadow: 0 0 6px var(--color-accent);
    }

    50% {
        box-shadow: 0 0 20px var(--color-accent);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

.animate-fade-in-up {
    animation: fadeInUp .7s ease both;
}

.animate-fade-in {
    animation: fadeIn .6s ease both;
}

.animate-slide-right {
    animation: slideInRight .7s ease both;
}

.delay-100 {
    animation-delay: .1s;
}

.delay-200 {
    animation-delay: .2s;
}

.delay-300 {
    animation-delay: .3s;
}

.delay-400 {
    animation-delay: .4s;
}

/* Scroll-triggered animations via IntersectionObserver */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .7s ease, transform .7s ease;
}

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

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }

    .hero-parallax {
        transform: none !important;
    }
}

/* ====================================================
   WHATSAPP FLOAT BUTTON
   ==================================================== */
.whatsapp-float {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 900;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #25d366;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 4px 14px rgba(37, 211, 102, .5);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, .6);
}

.whatsapp-float svg {
    width: 28px;
    height: 28px;
}

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

/* Large desktop: tighten nav for 7 items */
@media (max-width: 1280px) and (min-width: 1025px) {
    .desktop-nav {
        gap: 0.875rem;
    }

    .desktop-nav a {
        font-size: 0.75rem;
    }

    .desktop-nav .nav-cta {
        height: 34px;
        padding: 0 1rem;
        font-size: 0.75rem;
    }
}

/* Tablet / small laptop: switch to mobile menu */
@media (max-width: 1024px) {
    .desktop-nav {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    .mobile-menu {
        display: block;
    }

    .site-header {
        padding: 0 1.25rem;
    }

    .section {
        padding: 3.5rem 1.25rem;
    }

    .site-footer {
        padding: 3rem 1.25rem 1.5rem;
    }
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

/* Mobile phones */
@media (max-width: 640px) {
    .btn {
        height: 44px;
        padding: 0 1.25rem;
        font-size: .875rem;
    }

    .section-title {
        font-size: clamp(1.5rem, 6vw, 2.25rem);
    }

    .section {
        padding: 2.5rem 1rem;
    }

    .whatsapp-float {
        width: 48px;
        height: 48px;
        bottom: 1rem;
        right: 1rem;
    }

    .whatsapp-float svg {
        width: 24px;
        height: 24px;
    }

    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 4.5rem;
        right: 1rem;
    }

    h1 {
        word-break: break-word;
        overflow-wrap: break-word;
    }
}

/* ---------- Utility helpers ---------- */
.text-balance {
    text-wrap: balance;
}

.grid-auto-fill {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* ---------- Back to Top ---------- */
.back-to-top {
    position: fixed;
    bottom: 5.5rem;
    right: 1.5rem;
    z-index: 899;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-dark);
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base), background var(--transition-fast);
    cursor: pointer;
}

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

.back-to-top:hover {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

/* ---------- Card accent line hover ---------- */
.card-dark:hover .card-accent-line,
.card:hover .card-accent-line {
    background: var(--color-accent) !important;
    width: 60px !important;
}