/* ================ BASE STYLES ================ */
:root {
    /* Color Palette */
    --color-primary: #9c27b0; /* Violeta/Fucsia - Energía Reactiva */
    --color-primary-light: #d05ce3;
    --color-primary-dark: #6a0080;
    --color-secondary: #2196f3; /* Azul Cyber - Tecnología */
    --color-secondary-light: #6ec6ff;
    --color-secondary-dark: #0069c0;
    --color-dark: #121212; /* Negro Elegante - Fondo */
    --color-dark-light: #1e1e1e;
    --color-success: #4caf50; /* Verde Luz - Confirmaciones */
    --color-text-secondary: #e0e0e0; /* Blanco Opaco - Textos secundarios */
    --color-text-primary: #ffffff;
    --color-background: #0a0a0a;
    --color-card-bg: #1a1a1a;
    --color-border: #333333;
    
    /* Typography */
    --font-primary: 'Roboto', sans-serif;
    --font-secondary: 'Orbitron', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    
    /* Animation */
    --transition-speed: 0.3s;
}

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

html {
    font-size: 62.5%; /* 10px = 1rem base */
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 1.6rem;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-background);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ================ TYPOGRAPHY ================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
    font-weight: 700;
}

h1 {
    font-size: 4.8rem;
}

h2 {
    font-size: 3.6rem;
}

h3 {
    font-size: 2.4rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
    margin: var(--spacing-sm) auto;
    border-radius: var(--border-radius-sm);
}

.highlight {
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    display: inline-block;
}

/* ================ BUTTONS ================ */
.btn {
    display: inline-block;
    padding: 1.2rem 2.4rem;
    border-radius: var(--border-radius-md);
    font-family: var(--font-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: none;
    outline: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-text-primary);
    box-shadow: 0 4px 15px rgba(156, 39, 176, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(156, 39, 176, 0.6);
}

/* ================ HEADER ================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-speed) ease;
    padding: 1.5rem 0;
}

.logo {
    font-family: var(--font-secondary);
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: 2px;
    text-align: left;
}

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

.reactive {
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* ================ HERO SECTION ================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 8rem;
    background-color: var(--color-dark);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 70% 30%, rgba(156, 39, 176, 0.15), transparent 70%),
                radial-gradient(circle at 30% 70%, rgba(33, 150, 243, 0.15), transparent 70%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

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

.hero-title {
    font-size: 3.2rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    text-align: center;
}

.hero-description {
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
    max-width: 80%;
    margin-left: auto;
    margin-right: auto;
}

/* ================ FORM STYLES ================ */
.arquetipo-form {
    background-color: var(--color-card-bg);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid var(--color-border);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-secondary);
    font-size: 1.6rem;
    letter-spacing: 1px;
    font-weight: 700;
}

.form-control {
    width: 100%;
    padding: 1.2rem;
    background-color: #181828;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    color: #f2f2f2;
    font-family: var(--font-primary);
    font-size: 1.6rem;
    transition: all var(--transition-speed) ease;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(156, 39, 176, 0.25);
    background-color: #23233a;
    color: #fff;
}

.form-control option {
    background: #23233a;
    color: #f2f2f2;
}

.form-control:disabled {
    background: #222 !important;
    color: #888 !important;
    opacity: 0.7;
    cursor: not-allowed;
}


.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(156, 39, 176, 0.25);
}

.form-control:hover {
    border-color: var(--color-primary-light);
}

.file-input {
    position: relative;
    overflow: hidden;
    display: inline-block;
    width: 100%;
}

.file-input-label {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.2rem;
    background: linear-gradient(135deg, rgba(156, 39, 176, 0.1), rgba(33, 150, 243, 0.1));
    border: 1px dashed var(--color-border);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.file-input-label:hover {
    background: linear-gradient(135deg, rgba(156, 39, 176, 0.2), rgba(33, 150, 243, 0.2));
    border-color: var(--color-primary-light);
}

.file-input-label i {
    margin-right: 10px;
    font-size: 2rem;
    color: var(--color-primary-light);
}

.file-input input[type="file"] {
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.file-name {
    margin-top: var(--spacing-xs);
    font-size: 1.4rem;
    text-align: center;
}

.form-btn {
    width: 100%;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    font-family: var(--font-secondary);
    font-size: 1.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    margin-top: var(--spacing-md);
}

.form-btn:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.form-btn:disabled {
    background: #555;
    cursor: not-allowed;
    opacity: 0.7;
}

/* Instructions */
.instructions {
    background-color: rgba(33, 150, 243, 0.1);
    border-left: 4px solid var(--color-secondary);
    padding: var(--spacing-md);
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.instructions h3 {
    color: var(--color-secondary-light);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
}

.instructions h3 i {
    margin-right: 10px;
}

.instructions-list {
    list-style: none;
    padding-left: 0;
    text-align: left;
}

.instructions-list li {
    position: relative;
    padding-left: 3rem;
    margin-bottom: var(--spacing-sm);
}

.instructions-list li:before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.8rem;
    width: 10px;
    height: 10px;
    background: var(--color-secondary);
    border-radius: 50%;
}

/* Mensajes de feedback homogéneos */
.feedback-message {
    color: #f2f2f2 !important;
    font-weight: 500;
    font-size: 1.5rem;
    margin: 0.7rem 0 1.2rem 0;
    text-align: center;
    letter-spacing: 0.5px;
    background: transparent;
    transition: color 0.3s;
}


/* ================ FOOTER ================ */
.footer {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-dark);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-md);
}

.footer-logo {
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    font-style: italic;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.footer-copyright {
    font-size: 1.4rem;
    color: var(--color-text-secondary);
}

/* ================ RESPONSIVE STYLES ================ */
@media (max-width: 1024px) {
    html {
        font-size: 56.25%; /* 9px = 1rem */
    }
}

@media (max-width: 768px) {
    html {
        font-size: 50%; /* 8px = 1rem */
    }
    
    .hero-title {
        font-size: 3.6rem;
    }
    
    .hero-description {
        font-size: 1.8rem;
        max-width: 100%;
    }
    
    .arquetipo-form {
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2.8rem;
    }
    
    .instructions {
        padding: var(--spacing-sm);
    }
}