/* ============================================================
   MAIN.CSS — Global Styles & CSS Variables
   Vitech Home & Living
   ============================================================ */

/* ============================================================
   CSS VARIABLES
   ============================================================ */
:root {
    /* Colors */
    --color-white: #FFFFFF;
    --color-primary: #4CB7C5;
    --color-primary-dark: #1F6E7C;
    --color-bg-section: #F8F9FA;
    --color-text: #2B2B2B;
    --color-text-secondary: #666666;
    --color-border: #E5E7EB;
    --color-success: #10B981;
    --color-danger: #EF4444;
    --color-warning: #F59E0B;
    --color-info: #3B82F6;

    /* Typography */
    --font-family: 'Poppins', sans-serif;
    --font-weight-regular: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-size-body: 16px;
    --font-size-h1: 2.75rem;      /* 44px */
    --font-size-h2: 2.125rem;     /* 34px */
    --font-size-h3: 1.5rem;       /* 24px */
    --font-size-h4: 1.25rem;      /* 20px */
    --font-size-small: 0.875rem;  /* 14px */
    --font-size-xs: 0.75rem;      /* 12px */

    /* Spacing */
    --section-padding: 80px;
    --container-max: 1200px;
    --container-padding: 1.5rem;

    /* Borders & Shadows */
    --border-radius-sm: 8px;
    --border-radius: 10px;
    --border-radius-md: 12px;
    --border-radius-lg: 14px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.35s ease;

    /* Z-index layers */
    --z-navbar: 1000;
    --z-dropdown: 1001;
    --z-overlay: 1100;
    --z-modal: 1200;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-body);
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-regular);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family);
    font-weight: var(--font-weight-semibold);
    line-height: 1.3;
    color: var(--color-primary-dark);
    margin-bottom: 0.75rem;
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }
h4 { font-size: var(--font-size-h4); }

p {
    margin-bottom: 1rem;
    color: var(--color-text-secondary);
}

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

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

ul, ol {
    list-style: none;
    padding: 0;
}

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

strong {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

small {
    font-size: var(--font-size-small);
}

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

.main-content {
    flex: 1;
}

/* Sections */
.section {
    padding: var(--section-padding) 0;
}

.section-alt {
    background-color: var(--color-bg-section);
}

.section-title {
    text-align: center;
    font-size: var(--font-size-h2);
    color: var(--color-primary-dark);
    margin-bottom: 0.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.section-label {
    display: inline-block;
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 0.5rem;
}

.page-title {
    font-size: var(--font-size-h2);
    color: var(--color-primary-dark);
    margin-bottom: 1.5rem;
}

.page-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-family);
    font-weight: var(--font-weight-semibold);
    font-size: 1rem;
    padding: 0.75rem 1.75rem;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-base);
    line-height: 1.4;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Primary Button */
.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

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

/* Outline Button */
.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

/* Button Sizes */
.btn-sm {
    font-size: var(--font-size-small);
    padding: 0.5rem 1rem;
}

.btn-lg {
    font-size: 1.1rem;
    padding: 0.9rem 2rem;
}

.btn-block {
    display: flex;
    width: 100%;
}

/* ============================================================
   FORMS (Base)
   ============================================================ */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-small);
    color: var(--color-text);
    margin-bottom: 0.4rem;
}

.form-input,
.form-select {
    width: 100%;
    font-family: var(--font-family);
    font-size: 1rem;
    padding: 0.7rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    background-color: var(--color-white);
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(76, 183, 197, 0.15);
}

.form-input::placeholder {
    color: #9CA3AF;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='%23666'%3E%3Cpath d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}

.form-hint {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin-top: 0.3rem;
}

/* ============================================================
   MESSAGES
   ============================================================ */
.messages-container {
    position: fixed;
    top: 80px;
    right: 1.5rem;
    z-index: var(--z-overlay);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 400px;
}

.message {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-semibold);
    box-shadow: var(--shadow-md);
    animation: slideIn 0.3s ease;
}

.message-success {
    background-color: #ECFDF5;
    color: #065F46;
    border: 1px solid #A7F3D0;
}

.message-error,
.message-danger {
    background-color: #FEF2F2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

.message-warning {
    background-color: #FFFBEB;
    color: #92400E;
    border: 1px solid #FDE68A;
}

.message-info {
    background-color: #EFF6FF;
    color: #1E40AF;
    border: 1px solid #BFDBFE;
}

.message-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: inherit;
    opacity: 0.6;
    padding: 0;
    line-height: 1;
    transition: opacity var(--transition-fast);
}

.message-close:hover {
    opacity: 1;
}

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

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.35rem;
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    padding-top: 1.5rem;
}

.breadcrumb a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.breadcrumb-separator {
    color: #9CA3AF;
    user-select: none;
}

.breadcrumb-current {
    color: var(--color-primary-dark);
    font-weight: var(--font-weight-semibold);
}

/* ============================================================
   EMPTY STATE
   ============================================================ */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    grid-column: 1 / -1;
}

/* ============================================================
   BADGES
   ============================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 0.75rem;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-sale {
    background-color: var(--color-danger);
    color: var(--color-white);
}

/* ============================================================
   DIVIDERS
   ============================================================ */
.divider-gold {
    width: 50px;
    height: 3px;
    background-color: var(--color-primary);
    border: none;
    margin: 0.75rem auto;
    border-radius: 2px;
}

.section-divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 2rem 0;
}

/* ============================================================
   WHATSAPP FLOATING BUTTON
   ============================================================ */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background-color: #25D366;
    color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    text-decoration: none;
}

.whatsapp-float:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.5);
    color: #FFFFFF;
}

@media (max-width: 480px) {
    .whatsapp-float {
        bottom: 16px;
        right: 16px;
        width: 50px;
        height: 50px;
    }

    .whatsapp-float svg {
        width: 24px;
        height: 24px;
    }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    :root {
        --font-size-h1: 2rem;        /* 32px */
        --font-size-h2: 1.625rem;    /* 26px */
        --font-size-h3: 1.25rem;     /* 20px */
        --section-padding: 50px;
        --container-padding: 1rem;
    }

    .messages-container {
        top: 70px;
        right: 0.75rem;
        left: 0.75rem;
        max-width: none;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-h1: 1.75rem;     /* 28px */
        --font-size-h2: 1.375rem;    /* 22px */
        --font-size-body: 15px;
    }
}