/* Modern Premium Theme for TestRemoteControl Manual */
:root {
    /* Color Palette - Deep Universe */
    --bg-core: #050507;
    --bg-mesh-1: #0f1016;
    --bg-mesh-2: #1a1b26;

    /* Accents - Electric & Vibrant */
    --accent-primary: #3b82f6;
    /* Electric Blue */
    --accent-secondary: #8b5cf6;
    /* Violet */
    --accent-glow: rgba(59, 130, 246, 0.5);

    /* Text */
    --text-main: #ffffff;
    --text-muted: #94a3b8;
    --text-dim: #64748b;

    /* UI Elements */
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
    --glass-bg: rgba(10, 10, 12, 0.7);
    --glass-border: rgba(255, 255, 255, 0.05);

    /* Typography */
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Animations */
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-core);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.7;
    overflow-x: hidden;
    background-image:
        radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.08) 0%, transparent 25%);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 10;
}

/* --- Header --- */
header {
    padding: 1.5rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

header.scrolled {
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    background: linear-gradient(135deg, #fff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

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

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-main);
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.nav-btn {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    padding: 0.6rem 1.5rem;
    border-radius: 100px;
    color: white !important;
    /* Override standard nav link color */
    font-weight: 600 !important;
    box-shadow: 0 4px 15px var(--accent-glow);
    transition: transform 0.2s ease, box-shadow 0.2s ease !important;
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--accent-glow) !important;
    text-shadow: none !important;
}

/* --- Hero Section --- */
.hero {
    padding: 8rem 0 6rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    opacity: 0.15;
    z-index: -1;
    filter: blur(60px);
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 5vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 2rem;
    letter-spacing: -0.03em;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.3rem;
    color: var(--text-muted);
    max-width: 700px;
    margin-bottom: 3rem;
}

.hero p strong {
    color: var(--text-main);
    font-weight: 600;
}

.hero-visual {
    position: relative;
    margin-top: 2rem;
    perspective: 1000px;
}

.hero-phone {
    width: 300px;
    border: 12px solid #202024;
    border-radius: 40px;
    overflow: hidden;
    box-shadow:
        0 50px 100px -20px rgba(0, 0, 0, 0.5),
        0 30px 60px -30px rgba(59, 130, 246, 0.3),
        inset 0 0 0 2px rgba(255, 255, 255, 0.1);
    background: #000;
    transform: rotateY(-10deg) rotateX(5deg);
    transition: transform 0.6s var(--ease-out-back);
}

.hero-visual:hover .hero-phone {
    transform: rotateY(0) rotateX(0) scale(1.02);
}

.hero-phone img {
    width: 100%;
    height: auto;
    display: block;
}

/* --- Section Titles --- */
h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 1rem;
}

h2::before {
    content: '';
    display: block;
    width: 6px;
    height: 32px;
    background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary));
    border-radius: 4px;
}

/* --- Features Grid --- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2.5rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5);
}

.card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.03) 50%, transparent 70%);
    background-size: 200% 100%;
    background-position: 100% 0;
    transition: background-position 0.6s;
    pointer-events: none;
}

.card:hover::after {
    background-position: -100% 0;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-family: var(--font-heading);
}

.card p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.card-image-wrapper {
    margin-top: auto;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--card-border);
}

.card-image-wrapper img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease;
}

.card:hover .card-image-wrapper img {
    transform: scale(1.05);
}

/* --- Setup Steps --- */
.step {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 2rem;
    margin-bottom: 5rem;
    position: relative;
}

.step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 40px;
    top: 80px;
    bottom: -60px;
    width: 2px;
    background: linear-gradient(to bottom, var(--card-border) 50%, transparent);
    z-index: 0;
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-primary);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.step-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 2.5rem;
    backdrop-filter: blur(5px);
}

.step-content h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.command-block {
    background: #0f1115;
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.5rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    color: #a5b4fc;
    margin: 1.5rem 0;
    position: relative;
}

.command-block::before {
    content: '$';
    position: absolute;
    left: 1.5rem;
    top: 1.5rem;
    color: var(--text-dim);
    user-select: none;
}

.command-block code {
    display: block;
    padding-left: 1.5rem;
    white-space: pre-wrap;
}

/* --- Config Stats --- */
.config-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.stat-box {
    flex: 1;
    min-width: 280px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.01) 100%);
    border: 1px solid var(--card-border);
    padding: 2rem;
    border-radius: 16px;
}

.stat-box h5 {
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.8rem;
    margin-bottom: 1.5rem;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-row:last-child {
    border-bottom: none;
}

.stat-label {
    color: var(--text-muted);
}

.stat-value {
    color: var(--text-main);
    font-weight: 600;
}

/* --- Footer --- */
footer {
    border-top: 1px solid var(--card-border);
    margin-top: 8rem;
    padding: 4rem 0;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

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

/* --- Utilities --- */
.highlight {
    color: var(--accent-secondary);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    header {
        padding: 1rem 0;
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
        width: 100%;
    }

    .nav-links a {
        font-size: 0.9rem;
    }

    .logo {
        width: 100%;
        text-align: center;
        margin-bottom: 0.5rem;
    }

    .container {
        padding: 0 1.5rem;
        width: 100%;
        overflow-x: hidden;
    }

    .hero {
        padding: 4rem 0;
        overflow-x: hidden;
        width: 100%;
    }

    .hero h1 {
        font-size: 2.2rem;
        /* Reduced further to be safe */
        word-wrap: break-word;
    }

    /* Fixed overflow for h2 "Configuración Rápida" */
    h2 {
        font-size: 1.8rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    h2::before {
        width: 32px;
        height: 6px;
        /* Horizontal bar on mobile looks better above or just normal vertical */
        /* Let's keep it consistent but smaller/adjusted if needed. 
           Actually, vertical bar next to text in column mode might look weird.
           Let's change to horizontal top bar or keep side but ensure no overflow.
        */
        display: none;
        /* Hide decorative bar on mobile to save space/simplify */
    }

    .hero-phone {
        width: 100%;
        max-width: 280px;
        transform: none;
        margin: 0 auto;
    }

    .hero-visual:hover .hero-phone {
        transform: scale(1.02);
    }

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

    .step:not(:last-child)::after {
        display: none;
    }

    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
        margin-bottom: 0.5rem;
    }

    .step-content {
        padding: 1.5rem;
    }

    .card {
        padding: 1.5rem;
    }
}