/* Custom Fonts */
@font-face {
    font-family: 'PinotGrigioLight';
    src: url('../assets/fonts/PinotGrigioLight.woff2') format('woff2'),
         url('../assets/fonts/PinotGrigioLight.woff') format('woff');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

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

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #0f3460;
    --color-highlight: hwb(224 8% 36%);
    --color-white: #f2f2f6;
    --color-grey-light: #f5f5f5;
    --color-grey-medium: #cccccc;
    --color-grey-dark: #666666;
    --color-text: #333333;
    --color-text-muted: #555555;
    --color-error: #f60820;
    --color-success: #28a745;
    
    /* Fonts */
    --font-logo: 'PinotGrigioLight', 'Segoe UI', sans-serif;
    --font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 36px;
    --font-size-xxxl: 48px;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    --spacing-xxxl: 4rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --container-padding: 1rem;
    --header-height: 70px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
}

/* Base Styles */
html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* Header & Navigation */
header {
    background-color: var(--color-primary);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.main-nav {
    height: var(--header-height);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.logo {
    font-family: var(--font-logo);
    font-size: var(--font-size-xl);
    font-weight: 300;
    color: var(--color-white);
    text-decoration: none;
    letter-spacing: 1px;
}

.logo:hover {
    opacity: 0.9;
}

.logo-image {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

/* Navigation Buttons */
.nav-button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    background-color: var(--color-highlight);
    color: var(--color-white);
}

.nav-button:hover {
    background-color: hsl(243, 84%, 64%);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.nav-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Active/Current Page State - Greyed Out */
.nav-button--active {
    background-color: var(--color-grey-medium);
    color: var(--color-grey-dark);
    cursor: default;
    pointer-events: none;
}

.nav-button--active:hover {
    background-color: var(--color-grey-medium);
    transform: none;
    box-shadow: none;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--color-white);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

/* Main Content */
main {
    flex: 1;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
    padding: var(--spacing-xxxl) 0;
    text-align: center;
}

.hero .headline {
    font-size: var(--font-size-xxxl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -1px;
}

.tagline {
    font-size: var(--font-size-xl);
    font-weight: 300;
    opacity: 0.9;
    margin-bottom: var(--spacing-xxl);
}

.hero-placeholder {
    width: 100%;
    max-width: 600px;
    height: 300px;
    margin: 0 auto;
    background-color: rgba(255, 255, 255, 0.1);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    font-style: italic;
}

.hero-image {
       width: 100%;
       max-width: 600px;
       height: auto;
       border-radius: var(--border-radius-lg);
       box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
   }

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

.page-header .headline {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    letter-spacing: -1px;
}

/* Content Section */
.content {
    padding: var(--spacing-xxl) 0;
}

.content h2 {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.content p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

/* About Page */
.about-content {
    max-width: 800px;
}

.about-content p {
    font-size: var(--font-size-large);
    line-height: 1.8;
    color: var(--color-text);
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.product-card {
    background-color: var(--color-grey-light);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.product-card h3 {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.product-card p {
    color: var(--color-text-muted);
    line-height: 1.7;
}

.product-card ul {
    color: var(--color-text-muted);
    margin-left: var(--spacing-lg);
    line-height: 1.7;
}

.product-card li {
    margin-bottom: var(--spacing-sm);
}

.product-card li strong {
    color: var(--color-primary);
}

/* Contact Section */
.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h2 {
    margin-bottom: var(--spacing-lg);
}

.secretary-info {
    background-color: var(--color-grey-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    margin-top: var(--spacing-lg);
}

.secretary-info h3 {
    font-size: var(--font-size-large);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.secretary-info address {
    font-style: normal;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* Contact Form */
.contact-form-wrapper {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.1);
}

.contact-form-wrapper h3 {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

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

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    border: 2px solid var(--color-grey-medium);
    border-radius: var(--border-radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    background-color: var(--color-white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(15, 52, 96, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-grey-dark);
}

/* Validation States */
.form-group input.error,
.form-group textarea.error {
    border-color: var(--color-error);
    background-color: #fff5f5;
}

.form-group input.valid,
.form-group textarea.valid {
    border-color: var(--color-success);
    background-color: #f5fff5;
}

.error-message {
    display: block;
    font-size: var(--font-size-small);
    color: var(--color-error);
    margin-top: var(--spacing-xs);
    min-height: 20px;
}

/* Submit Button */
.submit-button {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-family);
    font-size: var(--font-size-large);
    font-weight: 600;
    color: var(--color-white);
    background-color: var(--color-highlight);
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.submit-button:hover {
    background-color: #d63d56;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(233, 69, 96, 0.4);
}

.submit-button:active {
    transform: translateY(0);
}

.submit-button:disabled {
    background-color: var(--color-grey-medium);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Form Status Messages */
.form-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    text-align: center;
    display: none;
}

.form-status.success {
    display: block;
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-status.error {
    display: block;
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Footer */
footer {
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
}

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

.company-name {
    font-family: var(--font-logo);
    font-size: var(--font-size-large);
    font-weight: 300;
    margin-bottom: var(--spacing-sm);
}

.secretary-address {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-small);
    margin-bottom: var(--spacing-sm);
}

.copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-small);
}

/* Responsive Breakpoints */

/* Tablet (768px - 1024px) */
@media screen and (max-width: 1024px) {
    :root {
        --font-size-xxxl: 40px;
        --font-size-xxl: 30px;
    }
    
    .hero .headline {
        font-size: var(--font-size-xxl);
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

/* Mobile (768px and below) */
@media screen and (max-width: 768px) {
    :root {
        --font-size-xxxl: 32px;
        --font-size-xxl: 24px;
        --font-size-xl: 20px;
        --header-height: 60px;
    }
    
    /* Mobile Navigation */
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--color-primary);
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-button {
        width: 100%;
        text-align: center;
    }
    
    /* Hero adjustments */
    .hero {
        padding: var(--spacing-xxl) 0;
    }
    
    .hero-placeholder {
        height: 200px;
    }
    
    /* Contact section stacked */
    .contact-section {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    /* Content adjustments */
    .content {
        padding: var(--spacing-xl) 0;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
}

/* Small Mobile (480px and below) */
@media screen and (max-width: 480px) {
    :root {
        --font-size-xxxl: 28px;
        --font-size-xxl: 22px;
        --container-padding: 0.75rem;
    }
    
    .hero .headline {
        font-size: var(--font-size-xxl);
    }
    
    .tagline {
        font-size: var(--font-size-large);
    }
    
    .contact-form-wrapper {
        padding: var(--spacing-lg);
    }
    
    .product-card {
        padding: var(--spacing-lg);
    }
}

/* Print Styles */
@media print {
    header,
    footer,
    .mobile-menu-toggle {
        display: none;
    }
    
    body {
        font-size: 12pt;
        color: #000;
    }
    
    .hero {
        background: none;
        color: #000;
        padding: 1rem 0;
    }
    
    .hero-placeholder {
        display: none;
    }
}