/**
 * Gainville Collection - Global Styles
 * Black/White luxury theme with smooth animations
 */

/* ========================================
   CSS Variables
   ======================================== */
:root {
    /* Colors */
    --color-black: #000000;
    --color-white: #FFFFFF;
    --color-gray-dark: #1a1a1a;
    --color-gray-medium: #333333;
    --color-gray-medium-light: #2C2C2C;
    --color-gray: #666666;
    --color-gray-light: #999999;
    --color-gray-lighter: #cccccc;
    --color-gray-lightest: #f5f5f5;
    --color-accent: #D4AF37; /* Gold accent */
    --color-accent-light: #E5C158; /* Light gold */
    --color-accent-dark: #B8941F; /* Dark gold */
    
    /* Typography */
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    --font-size-6xl: 3.75rem;     /* 60px */
    --font-size-7xl: 4.5rem;      /* 72px */
    
    /* Spacing */
    --spacing-xs: 0.5rem;         /* 8px */
    --spacing-sm: 1rem;           /* 16px */
    --spacing-md: 1.5rem;         /* 24px */
    --spacing-lg: 2rem;           /* 32px */
    --spacing-xl: 3rem;           /* 48px */
    --spacing-2xl: 4rem;          /* 64px */
    --spacing-3xl: 6rem;          /* 96px */
    --spacing-4xl: 8rem;          /* 128px */
    
    /* Layout */
    --max-width-sm: 640px;
    --max-width-md: 768px;
    --max-width-lg: 1024px;
    --max-width-xl: 1280px;
    --max-width-2xl: 1536px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-luxury: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Z-index layers */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

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

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

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-medium);
    background-color: var(--color-white);
    overflow-x: hidden;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-6xl); }
h2 { font-size: var(--font-size-5xl); }
h3 { font-size: var(--font-size-4xl); }
h4 { font-size: var(--font-size-3xl); }
h5 { font-size: var(--font-size-2xl); }
h6 { font-size: var(--font-size-xl); }

p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

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

a:hover {
    color: var(--color-gray-medium);
}

strong, b {
    font-weight: 600;
}

/* ========================================
   Layout Utilities
   ======================================== */
.container {
    width: 100%;
    max-width: var(--max-width-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

.container-narrow {
    max-width: var(--max-width-lg);
}

.container-wide {
    max-width: var(--max-width-2xl);
}

.container-luxury {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

@media (min-width: 1600px) {
    .container-luxury {
        max-width: 1600px;
        padding: 0 var(--spacing-3xl);
    }
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section-sm {
    padding: var(--spacing-2xl) 0;
}

.section-lg {
    padding: var(--spacing-4xl) 0;
}

/* ========================================
   Grid System
   ======================================== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ========================================
   Flexbox Utilities
   ======================================== */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.flex-wrap {
    flex-wrap: wrap;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: 0;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

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

.btn-outline {
    background-color: transparent;
    color: var(--color-black);
    border-color: var(--color-black);
}

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

.btn-accent {
    background-color: var(--color-white);
    color: var(--color-black);
    border-color: var(--color-white);
}

.btn-accent:hover {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-base);
    letter-spacing: 1.5px;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-lg);
    font-size: var(--font-size-sm);
    letter-spacing: 1px;
}

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

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

.img-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.img-contain {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ========================================
   Text Utilities
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-uppercase { text-transform: uppercase; }
.text-capitalize { text-transform: capitalize; }

.text-black { color: var(--color-black); }
.text-white { color: var(--color-white); }
.text-gray { color: var(--color-gray); }
.text-accent { color: var(--color-accent); }

.font-serif { font-family: var(--font-serif); }
.font-sans { font-family: var(--font-sans); }

/* ========================================
   Background Utilities
   ======================================== */
.bg-black { background-color: var(--color-black); }
.bg-white { background-color: var(--color-white); }
.bg-gray-dark { background-color: var(--color-gray-dark); }
.bg-gray-lightest { background-color: var(--color-gray-lightest); }

.bg-image {
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.bg-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.bg-overlay > * {
    position: relative;
    z-index: 2;
}

/* ========================================
   Spacing Utilities
   ======================================== */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-4xl { margin-bottom: var(--spacing-4xl); }

.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }

.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }

/* ========================================
   Display Utilities
   ======================================== */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* ========================================
   Animation Utilities
   ======================================== */
.fade-in {
    animation: fadeIn var(--transition-slow) ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp var(--transition-slow) ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Forms
   ======================================== */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    color: var(--color-gray-medium);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-lighter);
    border-radius: 0;
    transition: border-color var(--transition-base);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-black);
}

textarea {
    resize: vertical;
    min-height: 150px;
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-medium);
}

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

/* ========================================
   Responsive Design - Mobile First
   ======================================== */

/* Tablet: 768px and up */
@media (min-width: 768px) {
    :root {
        --font-size-6xl: 4.5rem;    /* 72px */
        --font-size-5xl: 3.75rem;   /* 60px */
    }
    
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    h1 { font-size: var(--font-size-7xl); }
    h2 { font-size: var(--font-size-6xl); }
    
    .section {
        padding: var(--spacing-4xl) 0;
    }
}

/* Desktop: 1024px and up */
@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
    
    .grid-md-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-md-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-md-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Mobile specific - hide on desktop */
@media (max-width: 767px) {
    h1 { font-size: var(--font-size-4xl); }
    h2 { font-size: var(--font-size-3xl); }
    h3 { font-size: var(--font-size-2xl); }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .hide-mobile {
        display: none !important;
    }
}

/* Desktop specific - hide on mobile */
@media (min-width: 768px) {
    .hide-desktop {
        display: none !important;
    }
}

/* ========================================
   Loading State
   ======================================== */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--color-black);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ========================================
   Header & Navigation
   ======================================== */
.site-header {
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-lightest);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
    border-bottom-color: transparent;
}

.navbar {
    padding: var(--spacing-md) 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-text {
    font-family: var(--font-serif);
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--color-black);
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-gray-medium);
    position: relative;
    padding: var(--spacing-xs) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-black);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-black);
}

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

.lang-switch {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--color-gray-lighter);
    transition: all var(--transition-base);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.flag-icon {
    font-size: var(--font-size-xl);
    line-height: 1;
}

.lang-text {
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.lang-switch:hover {
    border-color: var(--color-black);
    background-color: var(--color-black);
    color: var(--color-white);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: calc(var(--z-fixed) + 10);
    position: relative;
}

.hamburger-line {
    width: 25px;
    height: 2px;
    background-color: var(--color-black);
    transition: all var(--transition-base);
}

/* Mobile Menu Styles */
@media (max-width: 767px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-white);
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-base);
        padding: var(--spacing-3xl) var(--spacing-lg);
        overflow-y: auto;
        z-index: 12;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .nav-link {
        font-size: var(--font-size-base);
    }
    
    .mobile-menu-toggle.active .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }
    
    .mobile-menu-toggle.active .hamburger-line:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
}

/* ========================================
   Footer - Modern & Elegant Design
   ======================================== */
.site-footer {
    background-color: var(--color-black);
    color: var(--color-white);
}

.footer-content {
    padding: var(--spacing-4xl) 0 var(--spacing-lg);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: var(--font-size-3xl);
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
    text-align: center;
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-gray-light);
    font-style: italic;
    margin: 0;
}

.footer-nav {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-nav a {
    color: var(--color-white);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    position: relative;
    transition: color var(--transition-base);
    font-weight: 400;
}

.footer-nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-white);
    transition: width var(--transition-base);
}

.footer-nav a:hover {
    color: var(--color-gray-light);
}

.footer-nav a:hover::after {
    width: 100%;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.footer-social a {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-white);
    font-size: var(--font-size-lg);
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background-color: var(--color-white);
    color: var(--color-black);
    border-color: var(--color-white);
    transform: translateY(-3px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
}

.footer-bottom p {
    margin: 0;
    font-size: var(--font-size-xs);
    color: var(--color-gray-light);
}

.footer-contact-email a {
    color: var(--color-gray-light);
    transition: color var(--transition-base);
}

.footer-contact-email a:hover {
    color: var(--color-white);
}

@media (max-width: 1023px) {
    .footer-top {
        flex-direction: column;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .footer-brand {
        max-width: 100%;
    }
    
    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 767px) {
    .footer-nav {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

/* ========================================
   WhatsApp Button - Fixed Position
   ======================================== */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 32px;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
    text-decoration: none;
    animation: whatsappPulse 2s ease-in-out infinite;
}

.whatsapp-btn:hover {
    background-color: #128C7E;
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
    color: var(--color-white);
}

.whatsapp-btn i {
    line-height: 1;
}

/* Pulse Animation for WhatsApp Button */
@keyframes whatsappPulse {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    }
    50% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.6), 0 0 0 10px rgba(37, 211, 102, 0.1);
    }
}

/* Mobile Responsive */
@media (max-width: 767px) {
    .whatsapp-btn {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
        font-size: 26px;
    }
}

@media (max-width: 480px) {
    .whatsapp-btn {
        bottom: 15px;
        right: 15px;
        width: 50px;
        height: 50px;
    }
}