/* =========================================================================
   AMGOtify — Site Styles v2.0
   Estudio tecnológico · IoT · IA · SaaS · Desarrollo Web
   ========================================================================= */

/* --- 1. CSS Variables & Design System --- */
:root {
    /* Dark Theme Colors */
    --clr-bg: #050a14;
    --clr-bg-alt: #0a1120;
    --clr-bg-card: rgba(11, 20, 38, 0.8);
    --clr-surface: rgba(14, 26, 50, 0.7);
    --clr-surface-light: rgba(22, 38, 70, 0.6);

    /* Brand Colors */
    --clr-primary: #00d4ff;       /* Cyan eléctrico */
    --clr-secondary: #6c35de;     /* Violeta profundo */
    --clr-accent: #00ff94;        /* Verde neón (IoT) */
    --clr-warn: #ff9500;          /* Naranja (destacados) */

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #6c35de 100%);
    --gradient-hero: linear-gradient(135deg, #00d4ff 0%, #00ff94 50%, #6c35de 100%);
    --gradient-text: linear-gradient(to right, #ffffff 0%, #a5b4fc 100%);
    --gradient-card: linear-gradient(145deg, rgba(14,26,50,0.9) 0%, rgba(11,20,38,0.7) 100%);
    --gradient-green: linear-gradient(135deg, #00ff94, #00b4ff);

    /* Text */
    --clr-text-main: #f0f4ff;
    --clr-text-muted: #6b7a99;
    --clr-text-soft: #8fa0c0;

    /* Typography */
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;

    /* Spacing & Layout */
    --spacing-section: 7rem;
    --container-width: 1280px;
    --border-radius: 14px;
    --border-radius-lg: 22px;
    --border-radius-xl: 32px;

    /* Effects */
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-slow: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow-glow-cyan: 0 0 30px rgba(0, 212, 255, 0.25);
    --shadow-glow-purple: 0 0 30px rgba(108, 53, 222, 0.25);
    --shadow-card: 0 8px 40px -8px rgba(0, 0, 0, 0.6);
    --shadow-card-hover: 0 20px 60px -10px rgba(0, 0, 0, 0.7);

    /* Borders */
    --border-subtle: 1px solid rgba(255, 255, 255, 0.06);
    --border-glow: 1px solid rgba(0, 212, 255, 0.25);

    /* Z-Index */
    --z-background: -1;
    --z-base: 1;
    --z-overlay: 10;
    --z-header: 100;
    --z-floating: 200;
}

/* --- 2. Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--clr-bg);
    color: var(--clr-text-main);
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

ul { list-style: none; }

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

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

.section-padding { padding: var(--spacing-section) 0; }
.text-center { text-align: center; }

/* --- Typography --- */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.section-eyebrow {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--clr-primary);
    margin-bottom: 0.75rem;
    display: block;
}

.section-header {
    margin-bottom: 4rem;
}

.section-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.25rem;
}

.section-description {
    color: var(--clr-text-soft);
    font-size: 1.1rem;
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.7;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
    letter-spacing: -0.01em;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--clr-secondary), var(--clr-primary));
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.btn-primary:hover::before { opacity: 1; }

.btn-outline {
    background: transparent;
    color: var(--clr-text-main);
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
}

.btn-outline:hover {
    border-color: var(--clr-primary);
    color: var(--clr-primary);
    background: rgba(0, 212, 255, 0.06);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.05rem;
}

/* ============================================================
   HEADER
============================================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-header);
    transition: var(--transition);
    padding: 1.25rem 0;
}

.header.scrolled {
    padding: 0.85rem 0;
    background: rgba(5, 10, 20, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    box-shadow: 0 4px 40px rgba(0, 0, 0, 0.3);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -0.5px;
    z-index: 101;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    height: 38px;
    width: auto;
    object-fit: contain;
}

.logo-accent { color: var(--clr-primary); }

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

.nav-link {
    color: var(--clr-text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    position: relative;
    letter-spacing: 0.01em;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--clr-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.btn-cta { padding: 0.6rem 1.4rem; font-size: 0.9rem; }

.menu-toggle {
    display: none;
    cursor: pointer;
    z-index: 101;
    flex-direction: column;
    gap: 5px;
}

.bar {
    display: block;
    width: 26px;
    height: 2.5px;
    background-color: var(--clr-text-main);
    border-radius: 3px;
    transition: var(--transition);
}

/* ============================================================
   HERO
============================================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 90px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: var(--z-background);
    overflow: hidden;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, rgba(255,255,255,0.025) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at 60% 50%, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at 60% 50%, black 30%, transparent 75%);
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    animation: float 12s ease-in-out infinite alternate;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: rgba(0, 212, 255, 0.1);
    top: -150px;
    right: -100px;
}

.orb-2 {
    width: 350px;
    height: 350px;
    background: rgba(108, 53, 222, 0.12);
    bottom: 10%;
    left: -80px;
    animation-delay: -6s;
}

.orb-3 {
    width: 200px;
    height: 200px;
    background: rgba(0, 255, 148, 0.07);
    top: 40%;
    right: 30%;
    animation-delay: -3s;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 5rem;
    align-items: center;
    z-index: var(--z-base);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1.1rem;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.18);
    border-radius: 50px;
    color: var(--clr-primary);
    font-size: 0.82rem;
    font-weight: 500;
    margin-bottom: 1.75rem;
    letter-spacing: 0.03em;
}

.badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--clr-accent);
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: clamp(2.6rem, 5.5vw, 4.8rem);
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.05;
    letter-spacing: -0.04em;
}

.hero-title span {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    color: var(--clr-text-soft);
    margin-bottom: 2.5rem;
    line-height: 1.75;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.25rem 1.75rem;
    background: rgba(255, 255, 255, 0.03);
    border: var(--border-subtle);
    border-radius: var(--border-radius);
    backdrop-filter: blur(8px);
    width: fit-content;
}

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

.stat-number {
    font-size: 1.4rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    font-size: 0.72rem;
    color: var(--clr-text-muted);
    margin-top: 0.25rem;
    letter-spacing: 0.03em;
}

.stat-divider {
    width: 1px;
    height: 36px;
    background: rgba(255, 255, 255, 0.08);
}

/* Hero Visual — Tech Diagram */
.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 420px;
}

.tech-diagram {
    position: relative;
    width: 340px;
    height: 340px;
}

.diagram-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90px;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
}

.center-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: rgba(0, 212, 255, 0.08);
    border: 2px solid rgba(0, 212, 255, 0.3);
    animation: pulse-ring 3s ease-in-out infinite;
}

.center-ring::after {
    content: '';
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.1);
    animation: pulse-ring 3s ease-in-out infinite 0.5s;
}

@keyframes pulse-ring {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.08); opacity: 0.7; }
}

.center-icon {
    width: 50px;
    height: 50px;
    color: var(--clr-primary);
    z-index: 1;
}

.orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    border-radius: 50%;
    border: 1px dashed rgba(255, 255, 255, 0.08);
}

.orbit-1 {
    width: 180px;
    height: 180px;
    transform: translate(-50%, -50%);
    animation: orbit-spin 20s linear infinite;
}

.orbit-2 {
    width: 270px;
    height: 270px;
    transform: translate(-50%, -50%);
    animation: orbit-spin 30s linear infinite reverse;
}

.orbit-3 {
    width: 340px;
    height: 340px;
    transform: translate(-50%, -50%);
    animation: orbit-spin 40s linear infinite;
}

@keyframes orbit-spin {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.orbit-dot {
    position: absolute;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--clr-bg-card);
    border: 1px solid rgba(0, 212, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-primary);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.orbit-dot svg { width: 20px; height: 20px; }

.dot-1 { top: 0; left: 50%; transform: translate(-50%, -50%); }
.dot-2 { top: 50%; right: 0; transform: translate(50%, -50%); }
.dot-3 { bottom: 20px; left: 50%; transform: translateX(-50%); }

/* Counteract orbit rotation for the dots */
.orbit-1 .orbit-dot { animation: counter-spin 20s linear infinite; }
.orbit-2 .orbit-dot { animation: counter-spin-rev 30s linear infinite; }
.orbit-3 .orbit-dot { animation: counter-spin 40s linear infinite; }

@keyframes counter-spin { from { transform: translate(-50%, -50%) rotate(0deg); } to { transform: translate(-50%, -50%) rotate(-360deg); } }
@keyframes counter-spin-rev { from { transform: translate(50%, -50%) rotate(0deg); } to { transform: translate(50%, -50%) rotate(360deg); } }

/* Tech Labels */
.tech-label {
    position: absolute;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--clr-text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    white-space: nowrap;
    padding: 0.3rem 0.75rem;
    background: rgba(255,255,255,0.03);
    border: var(--border-subtle);
    border-radius: 50px;
}

.label-iot { top: 5%; left: -10%; }
.label-ai { bottom: 10%; left: -10%; }
.label-saas { top: 20%; right: -15%; }
.label-web { bottom: 25%; right: -15%; }

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.4;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--clr-text-muted);
    border-radius: 20px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 7px;
    background: var(--clr-text-muted);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-anim 1.5s infinite;
}

@keyframes scroll-anim {
    0% { transform: translateX(-50%) translateY(0); opacity: 1; }
    100% { transform: translateX(-50%) translateY(12px); opacity: 0; }
}

.scroll-text {
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--clr-text-muted);
}

/* ============================================================
   SERVICES SECTION
============================================================ */
.services {
    background: linear-gradient(180deg, var(--clr-bg) 0%, var(--clr-bg-alt) 100%);
    position: relative;
}

.services-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.service-card {
    background: var(--gradient-card);
    border: var(--border-subtle);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(0, 212, 255, 0.05), transparent 50%);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}

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

.service-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 212, 255, 0.2);
    box-shadow: var(--shadow-card-hover);
}

/* Featured card */
.service-card--featured {
    background: linear-gradient(145deg, rgba(14,26,50,0.95), rgba(22,38,70,0.8));
    border-color: rgba(0, 212, 255, 0.15);
    box-shadow: 0 0 0 1px rgba(0,212,255,0.05), var(--shadow-card);
}

.service-card--featured:hover {
    border-color: rgba(0, 212, 255, 0.35);
    box-shadow: var(--shadow-glow-cyan), var(--shadow-card-hover);
}

.service-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.85rem;
    background: rgba(0, 255, 148, 0.1);
    border: 1px solid rgba(0, 255, 148, 0.25);
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--clr-accent);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
    width: fit-content;
}

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: var(--transition);
    flex-shrink: 0;
}

.service-icon--web {
    background: rgba(0, 212, 255, 0.1);
    color: var(--clr-primary);
    border: 1px solid rgba(0, 212, 255, 0.15);
}

.service-icon--iot {
    background: rgba(0, 255, 148, 0.1);
    color: var(--clr-accent);
    border: 1px solid rgba(0, 255, 148, 0.15);
}

.service-icon--ai {
    background: rgba(108, 53, 222, 0.12);
    color: #a78bfa;
    border: 1px solid rgba(108, 53, 222, 0.2);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
    box-shadow: 0 0 20px currentColor;
}

.service-title {
    font-size: 1.3rem;
    margin-bottom: 0.85rem;
    font-weight: 700;
}

.service-desc {
    color: var(--clr-text-soft);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.service-list {
    list-style: none;
    margin-bottom: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.service-list li {
    font-size: 0.85rem;
    color: var(--clr-text-soft);
    padding-left: 1.25rem;
    position: relative;
}

.service-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--clr-primary);
    font-size: 0.8rem;
}

.service-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.75rem;
}

.service-tech span {
    font-size: 0.72rem;
    padding: 0.25rem 0.65rem;
    background: rgba(255, 255, 255, 0.04);
    border: var(--border-subtle);
    border-radius: 4px;
    color: var(--clr-text-muted);
    font-family: var(--font-main);
}

.service-cta {
    margin-top: auto;
    align-self: flex-start;
    font-size: 0.9rem;
    padding: 0.65rem 1.5rem;
}

/* Audience Section */
.audience-section {
    padding-top: 2rem;
    border-top: var(--border-subtle);
}

.audience-title {
    font-size: 1.1rem;
    color: var(--clr-text-muted);
    font-weight: 500;
    text-align: center;
    margin-bottom: 2rem;
    letter-spacing: 0.02em;
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.audience-card {
    background: rgba(255, 255, 255, 0.02);
    border: var(--border-subtle);
    border-radius: var(--border-radius);
    padding: 1.75rem;
    text-align: center;
    transition: var(--transition);
}

.audience-card:hover {
    background: rgba(0, 212, 255, 0.04);
    border-color: rgba(0, 212, 255, 0.15);
    transform: translateY(-3px);
}

.audience-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.audience-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.audience-card p {
    font-size: 0.83rem;
    color: var(--clr-text-muted);
    line-height: 1.6;
}

/* ============================================================
   PROJECTS SECTION
============================================================ */
.projects {
    background: var(--clr-bg-alt);
    position: relative;
}

/* Filter tabs */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: transparent;
    color: var(--clr-text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    font-family: var(--font-main);
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    color: var(--clr-text-main);
    border-color: rgba(255, 255, 255, 0.15);
}

.filter-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.2);
}

/* Projects grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.project-card {
    background: var(--gradient-card);
    border: var(--border-subtle);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.project-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.project-card:hover::after { transform: scaleX(1); }

.project-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.2);
    box-shadow: var(--shadow-card-hover);
}

.project-card[data-category="saas"] { --card-color: var(--clr-primary); }
.project-card[data-category="iot"] { --card-color: var(--clr-accent); }
.project-card[data-category="ia"] { --card-color: #a78bfa; }

.project-card::after {
    background: linear-gradient(90deg, var(--card-color), var(--clr-secondary));
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.25rem;
}

.project-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.project-icon svg { width: 22px; height: 22px; }

.project-icon--saas {
    background: rgba(0, 212, 255, 0.1);
    color: var(--clr-primary);
    border: 1px solid rgba(0, 212, 255, 0.15);
}

.project-icon--iot {
    background: rgba(0, 255, 148, 0.1);
    color: var(--clr-accent);
    border: 1px solid rgba(0, 255, 148, 0.15);
}

.project-icon--ai {
    background: rgba(108, 53, 222, 0.12);
    color: #a78bfa;
    border: 1px solid rgba(108, 53, 222, 0.2);
}

.project-icon--green {
    background: rgba(0, 200, 100, 0.1);
    color: #4ade80;
    border: 1px solid rgba(0, 200, 100, 0.15);
}

/* Status badges */
.project-status {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    white-space: nowrap;
    letter-spacing: 0.03em;
}

.status--produccion {
    background: rgba(0, 255, 148, 0.1);
    color: var(--clr-accent);
    border: 1px solid rgba(0, 255, 148, 0.2);
}

.status--desarrollo {
    background: rgba(255, 149, 0, 0.1);
    color: var(--clr-warn);
    border: 1px solid rgba(255, 149, 0, 0.2);
}

.status--listo {
    background: rgba(0, 212, 255, 0.1);
    color: var(--clr-primary);
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.status--concepto {
    background: rgba(255, 255, 255, 0.04);
    color: var(--clr-text-muted);
    border: var(--border-subtle);
}

.project-name {
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 0.3rem;
    letter-spacing: -0.02em;
}

.project-tagline {
    font-size: 0.8rem;
    color: var(--clr-primary);
    font-weight: 500;
    margin-bottom: 0.85rem;
    letter-spacing: 0.02em;
}

.project-desc {
    color: var(--clr-text-soft);
    font-size: 0.87rem;
    line-height: 1.7;
    margin-bottom: 1.25rem;
    flex-grow: 1;
}

.project-detail {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.025);
    border: var(--border-subtle);
    border-radius: 8px;
    margin-bottom: 1.25rem;
    font-size: 0.82rem;
}

.detail-label {
    color: var(--clr-primary);
    font-weight: 600;
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.project-detail span:last-child {
    color: var(--clr-text-soft);
    line-height: 1.5;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.project-tags span {
    font-size: 0.7rem;
    padding: 0.22rem 0.6rem;
    background: rgba(255, 255, 255, 0.03);
    border: var(--border-subtle);
    border-radius: 4px;
    color: var(--clr-text-muted);
    font-family: monospace;
}

/* hidden for filter */
.project-card.hidden {
    display: none;
}

/* ============================================================
   STACK SECTION
============================================================ */
.stack {
    background: linear-gradient(180deg, var(--clr-bg-alt) 0%, var(--clr-bg) 100%);
}

.stack-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.stack-category {
    background: rgba(255, 255, 255, 0.02);
    border: var(--border-subtle);
    border-radius: var(--border-radius);
    padding: 1.75rem;
    transition: var(--transition);
}

.stack-category:hover {
    border-color: rgba(0, 212, 255, 0.12);
    background: rgba(0, 212, 255, 0.02);
}

.stack-cat-title {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--clr-text-muted);
    margin-bottom: 1.25rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding-bottom: 0.75rem;
}

.stack-items {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.stack-item {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    font-size: 0.88rem;
    color: var(--clr-text-soft);
    transition: var(--transition);
}

.stack-item:hover { color: var(--clr-text-main); }

.stack-icon { font-size: 1rem; }

/* ============================================================
   ABOUT / NOSOTROS
============================================================ */
.about {
    background: var(--clr-bg);
    position: relative;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 6rem;
    align-items: center;
}

.about-title {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text {
    color: var(--clr-text-soft);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.value-item {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
}

.value-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.value-item h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
    letter-spacing: -0.01em;
}

.value-item p {
    font-size: 0.84rem;
    color: var(--clr-text-muted);
    line-height: 1.6;
}

/* About card visual */
.about-card {
    background: var(--gradient-card);
    border: var(--border-subtle);
    border-radius: var(--border-radius-xl);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 250px;
    height: 250px;
    background: rgba(0, 212, 255, 0.05);
    border-radius: 50%;
    filter: blur(40px);
}

.team-stat {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: var(--border-subtle);
}

.team-number {
    display: block;
    font-size: 4rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.team-label {
    font-size: 0.8rem;
    color: var(--clr-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 0.5rem;
    display: block;
}

.team-roles {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.role-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.88rem;
    color: var(--clr-text-soft);
    padding: 0.65rem 1rem;
    background: rgba(255,255,255,0.02);
    border: var(--border-subtle);
    border-radius: 8px;
}

.role-icon { font-size: 1rem; }

.about-location {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: var(--clr-text-muted);
}

/* ============================================================
   CTA / CONTACT
============================================================ */
.cta-section { background: var(--clr-bg-alt); }

.cta-container {
    background: linear-gradient(145deg, rgba(14,26,50,0.8), rgba(22,38,70,0.6));
    border: var(--border-subtle);
    border-radius: var(--border-radius-xl);
    padding: 5rem 3rem;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.cta-bg-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70%;
    height: 100%;
    background: radial-gradient(ellipse, rgba(108,53,222,0.12) 0%, rgba(0,212,255,0.04) 50%, transparent 70%);
    pointer-events: none;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    letter-spacing: -0.04em;
    margin-bottom: 1.25rem;
}

.cta-description {
    color: var(--clr-text-soft);
    font-size: 1.05rem;
    max-width: 520px;
    margin: 0 auto 3rem;
    line-height: 1.75;
}

.cta-options {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    flex-wrap: wrap;
    margin-bottom: 1.75rem;
}

.cta-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: rgba(255, 255, 255, 0.04);
    border: var(--border-subtle);
    border-radius: var(--border-radius);
    transition: var(--transition);
    min-width: 220px;
}

.cta-option:hover {
    background: rgba(0, 212, 255, 0.06);
    border-color: rgba(0, 212, 255, 0.2);
    transform: translateY(-3px);
}

.cta-option--whatsapp:hover {
    background: rgba(37, 211, 102, 0.06);
    border-color: rgba(37, 211, 102, 0.2);
}

.cta-option-icon { font-size: 1.6rem; }

.cta-option-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.cta-option-label {
    font-size: 0.72rem;
    color: var(--clr-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
}

.cta-option-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--clr-text-main);
}

.cta-footer-note {
    font-size: 0.8rem;
    color: var(--clr-text-muted);
}

/* ============================================================
   FOOTER
============================================================ */
.footer {
    background: #030711;
    border-top: var(--border-subtle);
    padding-top: 4.5rem;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-desc {
    color: var(--clr-text-muted);
    margin: 1.5rem 0;
    max-width: 320px;
    font-size: 0.88rem;
    line-height: 1.7;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-badge {
    background: rgba(255, 255, 255, 0.04);
    padding: 0.25rem 0.7rem;
    border-radius: 4px;
    font-size: 0.74rem;
    color: var(--clr-text-muted);
    border: var(--border-subtle);
    font-family: monospace;
}

.footer-heading {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
    color: var(--clr-text-soft);
    font-weight: 600;
}

.footer-links ul li,
.footer-legal ul li { margin-bottom: 0.85rem; }

.footer-links a,
.footer-legal a {
    color: var(--clr-text-muted);
    font-size: 0.88rem;
    transition: var(--transition);
}

.footer-links a:hover,
.footer-legal a:hover {
    color: var(--clr-primary);
    padding-left: 4px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 0;
    border-top: var(--border-subtle);
    color: var(--clr-text-muted);
    font-size: 0.83rem;
}

.social-links { display: flex; gap: 0.75rem; }

.social-icon {
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.04);
    border: var(--border-subtle);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-text-muted);
    transition: var(--transition);
}

.social-icon:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: rgba(0, 212, 255, 0.2);
    color: var(--clr-primary);
    transform: translateY(-2px);
}

/* ============================================================
   FLOATING WHATSAPP
============================================================ */
.floating-wa {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-floating);
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
}

.floating-wa:hover {
    transform: scale(1.1) translateY(-2px);
    box-shadow: 0 8px 30px rgba(37, 211, 102, 0.5);
}

/* ============================================================
   ANIMATIONS
============================================================ */
@keyframes float {
    0% { transform: translateY(0px) rotate(0deg); }
    100% { transform: translateY(-20px) rotate(3deg); }
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-8px); }
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }

/* ============================================================
   RESPONSIVE
============================================================ */
@media (max-width: 1100px) {
    .services-grid {
        grid-template-columns: 1fr 1fr;
    }
    .service-card--featured {
        grid-column: 1 / -1;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    .service-card--featured .service-tag,
    .service-card--featured .service-icon,
    .service-card--featured .service-title,
    .service-card--featured .service-desc { grid-column: 1 / -1; }

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

    .footer-top {
        grid-template-columns: 1.5fr 1fr 1fr;
    }

    .footer-top > *:last-child {
        grid-column: 2 / 3;
    }
}

@media (max-width: 900px) {
    :root { --spacing-section: 5rem; }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-visual { display: none; }

    .hero-buttons { justify-content: center; }

    .hero-stats {
        margin: 0 auto;
    }

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

    .service-card--featured {
        grid-template-columns: 1fr;
    }

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

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

    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .about-visual { order: -1; }

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

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

    .footer-top > *:first-child {
        grid-column: 1 / -1;
    }

    .nav { display: none; }
    .nav.open { display: flex; }
    .menu-toggle { display: flex; }
}

@media (max-width: 640px) {
    .container { padding: 0 1.25rem; }

    .hero-title { font-size: 2.4rem; }

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

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

    .cta-container { padding: 3rem 1.5rem; }

    .cta-options { flex-direction: column; align-items: center; }

    .cta-option { width: 100%; max-width: 300px; justify-content: center; }

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

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
        width: 100%;
    }

    .stat-divider { display: none; }
}

/* Nav mobile overlay */
@media (max-width: 900px) {
    .nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(5, 10, 20, 0.97);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        z-index: 100;
        display: none;
    }

    .nav.open {
        display: flex;
    }

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

    .nav-link {
        font-size: 1.3rem;
        color: var(--clr-text-main);
    }

    .menu-toggle.open .bar:nth-child(1) {
        transform: translateY(7.5px) rotate(45deg);
    }

    .menu-toggle.open .bar:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.open .bar:nth-child(3) {
        transform: translateY(-7.5px) rotate(-45deg);
    }
}