/* ================================
   MINIMALIST DESIGN SYSTEM - GRIDSPACE
   ================================ */

/* CSS Variables */
:root {
    /* Colors */
    --color-white: #FFFFFF;
    --color-background: #F8F9FA;
    --color-text-primary: #212529;
    --color-text-secondary: #6C757D;
    --color-accent-primary: #2563EB;
    --color-accent-secondary: #1E40AF;
    --color-border: #E5E7EB;
    --color-success: #059669;
    --color-warning: #DC2626;
    --color-light-gray: #F3F4F6;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Spacing */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-2xl: 64px;
    --space-3xl: 96px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;

    /* Layout */
    --container-max: 1280px;
    --container-padding: 32px;
}

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

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

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-white);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.2;
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
}

h1 { font-size: clamp(36px, 5vw, 56px); }
h2 { font-size: clamp(28px, 4vw, 40px); }
h3 { font-size: clamp(22px, 3vw, 28px); }
h4 { font-size: 20px; }
h5 { font-size: 18px; }
h6 { font-size: 16px; }

p {
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
}

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

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

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

ul, ol {
    list-style-position: inside;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 12px 24px;
    font-family: var(--font-primary);
    font-size: 15px;
    font-weight: var(--font-weight-medium);
    line-height: 1;
    text-align: center;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
    text-decoration: none;
}

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

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

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

.btn-outline:hover {
    background-color: var(--color-light-gray);
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

/* Forms */
.form-control {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-primary);
    font-size: 15px;
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-xs);
    font-size: 14px;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

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

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

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236C757D' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    cursor: pointer;
    font-size: 14px;
    color: var(--color-text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-group-stacked {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.checkbox-label-stacked {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.checkbox-label-stacked input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    cursor: pointer;
    flex-shrink: 0;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md) 0;
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.logo a {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 24px;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

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

.logo-icon {
    color: var(--color-accent-primary);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
}

.main-nav a {
    font-size: 15px;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-accent-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--color-text-primary);
    cursor: pointer;
    padding: 8px;
}

/* Footer */
.site-footer {
    background-color: var(--color-background);
    padding: var(--space-3xl) 0 var(--space-lg);
    margin-top: var(--space-3xl);
    border-top: 1px solid var(--color-border);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 24px;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.footer-logo i {
    color: var(--color-accent-primary);
}

.footer-description {
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.footer-stats {
    display: flex;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 20px;
    font-weight: var(--font-weight-bold);
    color: var(--color-accent-primary);
}

.stat-label {
    font-size: 12px;
    color: var(--color-text-secondary);
}

.footer-title {
    font-size: 16px;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-nav a {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.footer-nav a:hover {
    color: var(--color-accent-primary);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-item {
    display: flex;
    gap: var(--space-sm);
    font-size: 14px;
}

.contact-item i {
    color: var(--color-accent-primary);
    width: 20px;
    flex-shrink: 0;
}

.contact-item a {
    color: var(--color-text-secondary);
}

.contact-item a:hover {
    color: var(--color-accent-primary);
}

.contact-item .small {
    font-size: 13px;
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    align-items: center;
    text-align: center;
}

.footer-legal {
    font-size: 12px;
    color: var(--color-text-secondary);
}

.footer-certifications {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
}

.cert-badge {
    padding: 4px 12px;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 11px;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.footer-legal-links {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
    font-size: 13px;
}

.footer-legal-links .separator {
    color: var(--color-text-secondary);
}

.footer-copyright {
    font-size: 13px;
    color: var(--color-text-secondary);
}

/* Warehouse Card */
.warehouse-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow var(--transition-normal);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.warehouse-card:hover {
    box-shadow: var(--shadow-lg);
}

.warehouse-image {
    position: relative;
    padding-top: 66.67%;
    overflow: hidden;
    background-color: var(--color-light-gray);
}

.warehouse-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.warehouse-badge {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    padding: 6px 12px;
    font-size: 12px;
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-sm);
    background-color: var(--color-white);
}

.warehouse-badge.available {
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.warehouse-badge.limited {
    color: var(--color-warning);
    border: 1px solid var(--color-warning);
}

.warehouse-content {
    padding: var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.warehouse-location {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.warehouse-location i {
    color: var(--color-accent-primary);
}

.warehouse-name {
    font-size: 20px;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
}

.warehouse-specs {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.spec-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.spec-item i {
    color: var(--color-accent-primary);
    font-size: 14px;
}

.warehouse-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
}

.feature-tag {
    padding: 4px 10px;
    background-color: var(--color-light-gray);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--color-text-secondary);
}

.warehouse-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
}

.warehouse-price {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.price-amount {
    font-size: 24px;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.price-period {
    font-size: 14px;
    color: var(--color-text-secondary);
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: var(--space-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); }

/* Hero Section */
.hero {
    background-color: var(--color-background);
    padding: var(--space-3xl) 0;
    text-align: center;
}

.hero-title {
    font-size: clamp(40px, 6vw, 64px);
    margin-bottom: var(--space-md);
}

.hero-subtitle {
    font-size: clamp(18px, 2vw, 24px);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
}

/* Section */
.section {
    padding: var(--space-3xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Feature Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    padding: var(--space-lg);
    text-align: center;
}

.feature-card i {
    font-size: 40px;
    color: var(--color-accent-primary);
    margin-bottom: var(--space-md);
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: var(--space-sm);
}

.feature-card p {
    font-size: 15px;
    color: var(--color-text-secondary);
}

/* Page Hero */
.page-hero {
    background-color: var(--color-background);
    padding: var(--space-2xl) 0;
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    margin-bottom: var(--space-sm);
}

.page-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-secondary { color: var(--color-text-secondary); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* Form Specific Styles */
.form-section-block {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    margin-bottom: var(--space-lg);
}

.form-section-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 22px;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.form-section-title i {
    color: var(--color-accent-primary);
}

.form-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.form-note {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 14px;
    color: var(--color-text-secondary);
}

.form-note i {
    color: var(--color-accent-primary);
}

/* Responsive Design */
@media (max-width: 1024px) {
    :root {
        --container-padding: 24px;
    }

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

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

@media (max-width: 768px) {
    :root {
        --container-padding: 16px;
    }

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

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

    .checkbox-group {
        grid-template-columns: 1fr;
    }

    .main-nav {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .header-actions .btn {
        padding: 10px 16px;
        font-size: 14px;
    }

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

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

    .warehouse-specs {
        flex-direction: column;
        gap: var(--space-xs);
    }

    .warehouse-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }
}

@media (max-width: 480px) {
    .hero {
        padding: var(--space-2xl) 0;
    }

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

    .form-section-block {
        padding: var(--space-lg);
    }

    .footer-legal-links {
        flex-direction: column;
        gap: var(--space-xs);
    }

    .footer-legal-links .separator {
        display: none;
    }
}