/* =====================================================
   BASE STYLES - Vanilla CSS
   Portal Inmobiliario - Sin Bootstrap
   ===================================================== */

/* Reset y Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Paleta de Colores - Airbnb inspired */
    --color-primary: #FF385C;
    --color-primary-hover: #E61E4D;
    --color-secondary: #00A699;
    --color-text: #222222;
    --color-text-light: #717171;
    --color-text-lighter: #B0B0B0;
    --color-border: #DDDDDD;
    --color-border-light: #EBEBEB;
    --color-bg: #FFFFFF;
    --color-bg-light: #F7F7F7;
    --color-bg-hover: #F7F7F7;
    --color-success: #00A699;
    --color-warning: #FFB400;
    --color-danger: #C13515;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 30px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 8px 24px rgba(0, 0, 0, 0.16);
    
    /* Preloader */
    --preloader-size: 50px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;
    --font-size-4xl: 48px;
    
    /* Layout */
    --max-width: 1400px;
    --header-height: 80px;
}

/* Base Typography */
html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

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

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
    margin: 0;
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

/* Links */
a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

/* Buttons */
button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    padding: 0;
}

/* Lists */
ul, ol {
    list-style: none;
}

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

/* Form Elements */
input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    color: var(--color-text);
}

input:focus, textarea:focus, select:focus {
    outline: none;
}

/* Primary Button */
.primary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-primary);
    color: var(--color-bg);
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    box-shadow: var(--shadow-sm);
}

.primary-btn:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    color: var(--color-bg);
    box-shadow: var(--shadow-md);
}

.primary-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.primary-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.primary-btn i {
    font-size: var(--font-size-sm);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Utility Classes */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

.slide-in {
    animation: slideIn var(--transition-base) ease-out;
}

.scale-in {
    animation: scaleIn var(--transition-base) ease-out;
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 16px;
        --spacing-xl: 24px;
        --spacing-2xl: 32px;
        --font-size-4xl: 36px;
        --font-size-3xl: 28px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* =====================================================
   PRELOADER - Minimalista y Estético
   ===================================================== */

.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    visibility: visible;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

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

.preloader-logo {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preloader-logo img {
    width: 45px;
    padding: 10px;
    height: auto;
}

.preloader-spinner {
    width: var(--preloader-size);
    height: var(--preloader-size);
    border: 3px solid var(--color-border-light);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: preloader-spin 0.8s linear infinite;
}

@keyframes preloader-spin {
    to {
        transform: rotate(360deg);
    }
}