/* ============================================================================
   RANBO STONES WEBSITE - STYLE.CSS
   Marble & Granite Themed Design
   ============================================================================ */

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

:root {
    --marble-white: #f8f9fa;
    --marble-grey: #e9ecef;
    --granite-dark: #2c3e50;
    --granite-black: #1a1a1a;
    --accent-gold: #c9a961;
    --text-dark: #333333;
    --text-light: #666666;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--marble-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================================================
   NAVIGATION
   ============================================================================ */

.navbar {
    background: linear-gradient(135deg, var(--granite-black) 0%, var(--granite-dark) 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

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

.nav-brand h1 {
    font-size: 1.8rem;
    letter-spacing: 2px;
    margin-bottom: 0;
    font-weight: 700;
}

.nav-brand .tagline {
    font-size: 0.75rem;
    color: var(--accent-gold);
    margin-top: -5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--accent-gold);
    border-bottom-color: var(--accent-gold);
}

/* ============================================================================
   FLASH MESSAGES
   ============================================================================ */

.flash-messages {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    z-index: 999;
}

.flash-message {
    padding: 1rem;
    margin-bottom: 0;
}

.flash-success {
    background-color: #d4edda;
    color: #155724;
    border-left: 4px solid #28a745;
}

.flash-error {
    background-color: #f8d7da;
    color: #721c24;
    border-left: 4px solid #dc3545;
}

/* ============================================================================
   HERO SECTION
   ============================================================================ */

.hero {
    height: 600px;
    background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4)), 
                url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 600"><rect fill="%232c3e50" width="1000" height="600"/><path fill="%23ecf0f1" opacity="0.1" d="M0 300 Q250 200 500 300 T1000 300 L1000 600 L0 600 Z"/></svg>');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    color: white;
}

.hero-content {
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    letter-spacing: 1px;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: var(--marble-grey);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn {
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--accent-gold);
    color: var(--granite-black);
}

.btn-primary:hover {
    background-color: #b8954d;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(201, 169, 97, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background-color: white;
    color: var(--granite-dark);
}

.btn-light {
    background-color: white;
    color: var(--granite-dark);
}

.btn-light:hover {
    background-color: var(--marble-grey);
}

.btn-link {
    color: var(--accent-gold);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-link:hover {
    color: var(--granite-dark);
}

/* ============================================================================
   SECTIONS
   ============================================================================ */

.section {
    padding: 5rem 0;
}

.section-white {
    background-color: white;
}

.section-grey {
    background: var(--marble-grey);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--granite-dark);
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--accent-gold);
}

/* ============================================================================
   FEATURES
   ============================================================================ */

.features {
    padding: 5rem 0;
    background-color: white;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: 10px;
    background: var(--marble-grey);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: var(--granite-dark);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.feature-card p {
    color: var(--text-light);
}

/* ============================================================================
   PRODUCT/PROJECT CARDS
   ============================================================================ */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-10px);
}

.card-image {
    height: 200px;
    background: linear-gradient(135deg, #34495e 0%, #2c3e50 100%);
}

.card-content {
    padding: 1.5rem;
}

.card-content h3 {
    color: var(--granite-dark);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.card-content p {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

/* ============================================================================
   FORMS
   ============================================================================ */

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--granite-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-gold);
}

/* ============================================================================
   FILTERS
   ============================================================================ */

.filters {
    background: var(--marble-grey);
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 2rem;
}

.filter-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: flex-end;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

/* ============================================================================
   CTA SECTION
   ============================================================================ */

.cta-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--granite-dark) 0%, var(--granite-black) 100%);
    color: white;
    text-align: center;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--marble-grey);
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.footer {
    background-color: var(--granite-black);
    color: var(--marble-grey);
    padding: 3rem 0 1rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h4 {
    color: var(--accent-gold);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-col p {
    margin-bottom: 0.5rem;
    line-height: 1.8;
}

.footer-col ul {
    list-style: none;
}

.footer-col a {
    color: var(--marble-grey);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: var(--accent-gold);
}

.footer-cert {
    color: var(--accent-gold);
    font-weight: 600;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
}

/* ============================================================================
   UTILITY CLASSES
   ============================================================================ */

.text-center {
    text-align: center;
}

.mb-2 {
    margin-bottom: 2rem;
}

.mt-2 {
    margin-top: 2rem;
}

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .section-title {
        font-size: 2rem;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .filter-row {
        flex-direction: column;
    }

    .filter-group {
        width: 100%;
    }
}