/* Dianoris - Premium Diamond Gifting B2B Website */

/* ========================================
   CSS Variables & Base Styles
   ======================================== */
:root {
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #c9a959;
    --color-accent-hover: #b8943d;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-white: #ffffff;
    --color-bg-light: #f8f8f8;
    --color-bg-alt: #f2f2f2;
    --color-border: #e0e0e0;

    --font-heading: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;

    --container-width: 1200px;
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    line-height: 1.3;
    color: var(--color-primary);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; margin-bottom: 1.5rem; }
h3 { font-size: 1.5rem; margin-bottom: 1rem; }
h4 { font-size: 1.25rem; margin-bottom: 0.75rem; }

p { margin-bottom: 1rem; }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

ul, ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

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

/* ========================================
   Layout & Container
   ======================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

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

/* ========================================
   Header & Navigation
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-white);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
}

.logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.05em;
}

.main-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    gap: 2rem;
}

.main-nav a {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width 0.3s ease;
}

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

.main-nav a.btn {
    padding: 0.75rem 1.5rem;
}

.main-nav a.btn::after {
    display: none;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    position: relative;
    transition: background-color 0.3s ease;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    transition: transform 0.3s ease;
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.mobile-menu-toggle.active .hamburger {
    background-color: transparent;
}

.mobile-menu-toggle.active .hamburger::before {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active .hamburger::after {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: center;
    border: none;
    border-radius: 0;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1rem;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: var(--header-height);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    color: var(--color-white);
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 300;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

/* ========================================
   Page Header
   ======================================== */
.page-header {
    padding: 160px 0 80px;
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
}

.page-header h1 {
    color: var(--color-white);
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 0;
}

/* ========================================
   Who We Serve Section
   ======================================== */
.section-intro {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 3rem;
    text-align: center;
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.client-card {
    text-align: center;
    padding: 2rem;
    background-color: var(--color-bg-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.client-icon {
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.client-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0;
}

/* ========================================
   Services Section
   ======================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.service-card {
    padding: 2.5rem;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.service-card h3 {
    color: var(--color-primary);
}

.service-card p {
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* ========================================
   Why Section (Features)
   ======================================== */
.section-why {
    background-color: var(--color-bg-light);
    text-align: center;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 2rem;
}

.feature {
    padding: 1.5rem;
}

.feature-icon {
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.feature h4 {
    font-size: 1rem;
    margin-bottom: 0;
}

/* ========================================
   CTA Section
   ======================================== */
.section-cta {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
    text-align: center;
}

.cta-content h2 {
    color: var(--color-white);
}

.cta-content p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* ========================================
   Solutions Page
   ======================================== */
.solutions-intro {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.lead {
    font-size: 1.25rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

.solution-detail {
    display: grid;
    grid-template-columns: 1fr 200px;
    gap: 4rem;
    align-items: center;
}

.solution-detail.reverse {
    grid-template-columns: 200px 1fr;
}

.solution-detail.reverse .solution-icon {
    order: -1;
}

.solution-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-accent);
}

.solution-features {
    list-style: none;
    margin: 1.5rem 0 0;
    padding: 0;
}

.solution-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.solution-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 1rem;
    width: 8px;
    height: 8px;
    background-color: var(--color-accent);
    border-radius: 50%;
}

/* ========================================
   How It Works Page
   ======================================== */
.process-intro {
    max-width: 800px;
    margin: 0 auto 4rem;
    text-align: center;
}

.process-steps {
    max-width: 800px;
    margin: 0 auto;
}

.process-step {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--color-border);
}

.process-step:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.step-number {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
}

.step-content h2 {
    margin-bottom: 1rem;
}

.step-details {
    list-style: none;
    margin: 1rem 0 0;
    padding: 0;
}

.step-details li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text-light);
}

.step-details li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.9rem;
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    border-radius: 50%;
}

/* Pricing Approach */
.pricing-approach {
    text-align: center;
}

.pricing-approach .lead {
    margin-bottom: 3rem;
}

.pricing-points {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.pricing-point {
    padding: 2rem;
    background-color: var(--color-white);
}

.pricing-point h4 {
    color: var(--color-primary);
}

.pricing-point p {
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* ========================================
   About Page
   ======================================== */
.about-intro {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.approach-item {
    padding: 2rem;
    background-color: var(--color-white);
}

.approach-item h3 {
    color: var(--color-primary);
}

.approach-item p {
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* Trust Grid */
.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.trust-item {
    padding: 2rem;
}

.trust-icon {
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.trust-item h4 {
    margin-bottom: 0.5rem;
}

.trust-item p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* Lab-Grown Section */
.lab-grown-section {
    max-width: 900px;
    margin: 0 auto;
}

.lab-grown-content {
    margin-top: 2rem;
}

.lab-grown-content > p {
    font-size: 1.125rem;
    text-align: center;
    margin-bottom: 2rem;
}

.lab-grown-points {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.lg-point {
    padding: 1.5rem;
    background-color: var(--color-white);
}

.lg-point h4 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.lg-point p {
    color: var(--color-text-light);
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* ========================================
   Contact Page
   ======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-info h2 {
    margin-bottom: 1.5rem;
}

.contact-details {
    margin: 2rem 0;
}

.contact-item h4 {
    color: var(--color-accent);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.25rem;
}

.what-to-expect {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.what-to-expect h3 {
    margin-bottom: 1rem;
}

.what-to-expect ol {
    margin-left: 1.25rem;
}

.what-to-expect li {
    padding: 0.5rem 0;
    color: var(--color-text-light);
}

/* Contact Form */
.contact-form-wrapper {
    background-color: var(--color-bg-light);
    padding: 3rem;
}

.contact-form {
    max-width: 100%;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

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

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.required {
    color: var(--color-accent);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    border: 1px solid var(--color-border);
    background-color: var(--color-white);
    transition: border-color 0.3s ease;
}

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

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

.form-submit {
    margin-top: 1rem;
}

/* Success & Error Messages */
.success-message {
    text-align: center;
    padding: 2rem;
}

.success-message h3 {
    color: #28a745;
    margin-bottom: 1rem;
}

.error-message {
    background-color: #f8d7da;
    color: #721c24;
    padding: 1rem;
    margin-bottom: 1.5rem;
    border: 1px solid #f5c6cb;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand .logo-text {
    color: var(--color-white);
    display: block;
    margin-bottom: 1rem;
}

.footer-brand p {
    opacity: 0.8;
    margin-bottom: 0;
}

.site-footer h4 {
    color: var(--color-accent);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}

.footer-links ul {
    list-style: none;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--color-white);
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--color-white);
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* ========================================
   Main Content Offset (for fixed header)
   ======================================== */
main {
    padding-top: var(--header-height);
}

.hero,
.page-header {
    margin-top: calc(-1 * var(--header-height));
}

/* ========================================
   Responsive Styles
   ======================================== */
@media (max-width: 1024px) {
    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }

    .section { padding: 60px 0; }

    /* Mobile Navigation */
    .mobile-menu-toggle {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--color-white);
        padding: 2rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }

    .main-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 1rem;
    }

    .main-nav a {
        display: block;
        padding: 0.75rem 0;
    }

    /* Hero */
    .hero h1 {
        font-size: 2.5rem;
    }

    /* Grids */
    .clients-grid,
    .services-grid,
    .approach-grid,
    .pricing-points,
    .lab-grown-points {
        grid-template-columns: 1fr;
    }

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

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

    /* Solutions */
    .solution-detail,
    .solution-detail.reverse {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .solution-detail.reverse .solution-icon {
        order: 0;
    }

    .solution-features {
        text-align: left;
    }

    /* Process Steps */
    .process-step {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .step-number {
        margin: 0 auto;
    }

    .step-details {
        text-align: left;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form-wrapper {
        padding: 2rem;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-brand {
        grid-column: auto;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

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

    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 0.9rem;
    }
}