/**
 * Hashi Theme - Optimized Styles
 * Based on frontend-design skill principles
 * @version 1.0.0
 */

/* ==========================================================================
   Design Tokens - Consistent across all pages
   ========================================================================== */

:root {
    /* Colors - from brand spec */
    --primary: #F97316;
    --primary-dark: #EA580C;
    --primary-light: #FFF1E8;
    --charcoal: #17191C;
    --body: #667085;
    --warm-white: #FCFBF8;
    --surface: #FFFFFF;
    --soft-gray: #F3F4F2;
    --border: #E6E7E4;
    --success: #18864B;
    --error: #B42318;
    
    /* Typography - Clear hierarchy */
    --font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 48px;
    --font-size-4xl: 64px;
    
    /* Spacing - 8pt grid */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 48px;
    --space-8: 64px;
    --space-9: 96px;
    --space-10: 128px;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(23, 25, 28, 0.06);
    --shadow-md: 0 4px 16px rgba(23, 25, 28, 0.08);
    --shadow-lg: 0 8px 32px rgba(23, 25, 28, 0.12);
    --shadow-xl: 0 16px 48px rgba(23, 25, 28, 0.16);
    
    /* Transitions */
    --transition-fast: 160ms ease;
    --transition-base: 220ms ease;
    --transition-slow: 300ms ease;
}

/* ==========================================================================
   Base Reset & Typography
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--charcoal);
    background-color: var(--warm-white);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--charcoal);
}

h1 { font-size: var(--font-size-4xl); margin-bottom: var(--space-6); }
h2 { font-size: var(--font-size-3xl); margin-bottom: var(--space-5); }
h3 { font-size: var(--font-size-2xl); margin-bottom: var(--space-4); }
h4 { font-size: var(--font-size-xl); margin-bottom: var(--space-3); }

p {
    margin-bottom: var(--space-4);
    color: var(--body);
}

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

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

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

/* ==========================================================================
   Layout System
   ========================================================================== */

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.section {
    padding: var(--space-9) 0;
}

.section--gray {
    background-color: var(--soft-gray);
}

.section--dark {
    background-color: var(--charcoal);
    color: var(--surface);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
    color: var(--surface);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-6);
}

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

/* ==========================================================================
   Components - Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    line-height: 1;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn:focus-visible {
    outline: 3px solid rgba(249, 115, 22, 0.4);
    outline-offset: 2px;
}

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

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

.btn--secondary {
    background-color: transparent;
    color: var(--charcoal);
    border: 1px solid var(--border);
}

.btn--secondary:hover {
    background-color: var(--soft-gray);
    border-color: var(--charcoal);
}

.btn--ghost {
    background-color: transparent;
    color: var(--charcoal);
    padding: var(--space-3) var(--space-4);
}

.btn--ghost:hover {
    color: var(--primary);
    background-color: var(--primary-light);
}

.btn--lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
}

.btn--sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

/* ==========================================================================
   Components - Cards
   ========================================================================== */

.card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card__image {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.card__content {
    padding: var(--space-5);
}

.card__tag {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--primary-light);
    color: var(--primary);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-pill);
    margin-bottom: var(--space-3);
}

.card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.card__desc {
    font-size: var(--font-size-sm);
    color: var(--body);
    margin-bottom: var(--space-4);
}

.card__link {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary);
}

/* ==========================================================================
   Components - Forms
   ========================================================================== */

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--space-2);
    color: var(--charcoal);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-base);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.15);
}

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

/* ==========================================================================
   Components - Header
   ========================================================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: rgba(252, 251, 248, 0.98);
    backdrop-filter: blur(12px);
    z-index: 1000;
    box-shadow: 0 1px 0 var(--border);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.header__logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--charcoal);
}

.header__logo span {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 400;
    color: var(--primary);
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.header__nav a {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--charcoal);
}

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

/* Dropdown Menu */
.menu-item-has-children {
    position: relative;
}

.sub-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: -10px;
    min-width: 200px;
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2) 0;
    margin-top: var(--space-3);
    z-index: 1000;
}

.menu-item-has-children::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: var(--space-3);
}

/* Desktop: show submenu on hover */
.menu-item-has-children:hover > .sub-menu {
    display: block;
}

.sub-menu a {
    display: block;
    padding: var(--space-3) var(--space-5);
    font-size: var(--font-size-sm);
    color: var(--body);
}

.sub-menu a:hover {
    background: var(--soft-gray);
    color: var(--primary);
}

/* ==========================================================================
   Components - Footer
   ========================================================================== */

.site-footer {
    background: var(--charcoal);
    color: #E0E3E8;
    padding: var(--space-9) 0 var(--space-6);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-7);
    margin-bottom: var(--space-8);
}

.site-footer h4 {
    color: var(--surface);
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.site-footer p {
    color: #B0B5BD;
    font-size: var(--font-size-sm);
    line-height: 1.8;
}

.site-footer a {
    color: #B0B5BD;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.footer-logo .site-title {
    color: var(--surface);
    font-weight: 700;
}

.footer-logo .site-title small {
    color: var(--primary);
}

.footer-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-menu li {
    margin-bottom: var(--space-3);
}

.footer-menu a {
    color: #B0B5BD;
    font-size: var(--font-size-sm);
}

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

.footer-newsletter .form-input {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
    color: var(--surface);
}

.footer-newsletter .form-input::placeholder {
    color: #8B9199;
}

.footer-newsletter .form-input:focus {
    border-color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-5);
    text-align: center;
}

.footer-bottom p {
    color: #8B9199;
    font-size: var(--font-size-xs);
}

.footer-bottom-links {
    display: flex;
    justify-content: center;
    gap: var(--space-5);
    margin-top: var(--space-4);
}

.footer-bottom-links a {
    color: #8B9199;
    font-size: var(--font-size-xs);
}

.footer-bottom-links a:hover {
    color: var(--primary);
}

/* ==========================================================================
   Page-Specific Styles
   ========================================================================== */

/* Hero Sections */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(23, 25, 28, 0.9) 0%, rgba(23, 25, 28, 0.7) 100%);
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.hero__badge {
    display: inline-block;
    background: var(--primary);
    color: var(--surface);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-pill);
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: var(--space-5);
}

.hero__title {
    color: var(--surface);
    font-size: var(--font-size-4xl);
    line-height: 1.1;
    margin-bottom: var(--space-5);
}

/* Product Detail Title - Optimized for 60 chars */
.product-title {
    font-size: var(--font-size-xl);
    line-height: 1.3;
    margin-bottom: var(--space-4);
    max-width: 500px;
    font-weight: 700;
}

@media (max-width: 768px) {
    .product-title {
        font-size: var(--font-size-lg);
    }
}

/* Product Gallery - 1:1 Aspect Ratio */
.product-gallery,
.gallery-main,
.gallery-placeholder {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: var(--soft-gray);
}

.product-gallery img,
.gallery-main img,
.gallery-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Lucide Icons */
.highlight-icon {
    width: 20px;
    height: 20px;
    color: var(--success);
}

.icon {
    width: 24px;
    height: 24px;
    stroke-width: 2;
}

.icon--sm {
    width: 16px;
    height: 16px;
}

.icon--lg {
    width: 32px;
    height: 32px;
}

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

.icon--charcoal {
    color: var(--charcoal);
}

.icon--body {
    color: var(--body);
}

.icon--white {
    color: var(--surface);
}

/* Checkbox replacement */
[data-lucide="check"] {
    color: var(--success);
}

/* Navigation icons */
[data-lucide="menu"],
[data-lucide="x"] {
    cursor: pointer;
}

.hero__subtitle {
    color: #A8ADB5;
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-6);
}

.hero__actions {
    display: flex;
    gap: var(--space-4);
}

/* Stats Bar */
.stats-bar {
    display: flex;
    justify-content: space-around;
    padding: var(--space-6) 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

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

.stat-item__value {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary);
}

.stat-item__label {
    font-size: var(--font-size-sm);
    color: var(--body);
}

/* Product Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

/* Contact Form */
.contact-form {
    background: var(--surface);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.contact-info {
    background: var(--soft-gray);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    
    .footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero__title {
        font-size: var(--font-size-3xl);
    }
}

@media (max-width: 768px) {
    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
    
    .hero {
        min-height: auto;
        padding: var(--space-10) 0;
    }
    
    .hero__title {
        font-size: var(--font-size-2xl);
    }
    
    .header__nav {
        display: none;
    }
    
    .footer__grid {
        grid-template-columns: 1fr;
    }
    
    .stats-bar {
        flex-wrap: wrap;
        gap: var(--space-5);
    }
    
    .stat-item {
        flex: 0 0 calc(50% - var(--space-3));
    }
}

/* ==========================================================================
   Utilities
   ========================================================================== */

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

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }

.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }

.hidden { display: none; }
.visible { display: block; }

/* ==========================================================================
   Animations
   ========================================================================== */

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

.animate-fadeIn {
    animation: fadeIn 0.6s ease forwards;
}

.animate-slideUp {
    animation: slideUp 0.6s ease forwards;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==========================================================================
   Tablet Overrides
   ========================================================================== */

@media (max-width: 1023px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
}

/* ==========================================================================
   Mobile Overrides (must be last to win specificity)
   ========================================================================== */

@media (max-width: 767px) {
    /* Hide top bar on mobile */
    .top-bar {
        display: none !important;
    }

    /* Mobile logo size */
    .site-logo-img {
        height: 44px !important;
    }

    .footer-logo-img {
        height: 40px !important;
    }

    /* Hide desktop nav and CTA */
    .nav-menu,
    .header-cta {
        display: none !important;
    }

    .mobile-menu-toggle {
        display: flex !important;
    }

    /* Hide ALL desktop-style submenus */
    .nav-menu .sub-menu,
    .menu-item-has-children > .sub-menu {
        display: none !important;
    }

    /* Mobile submenu: inline expand via .active class only */
    .mobile-nav-menu .sub-menu {
        position: static !important;
        display: none !important;
        box-shadow: none !important;
        border-radius: 0 !important;
        background: transparent !important;
        min-width: 0 !important;
        left: auto !important;
        top: auto !important;
        margin-top: 0 !important;
        padding: 0 0 0 var(--space-5) !important;
        z-index: auto !important;
    }

    .mobile-nav-menu .menu-item-has-children.active > .sub-menu {
        display: block !important;
    }

    /* Remove ALL hover pseudo-elements */
    .menu-item-has-children::after,
    .menu-item-has-children::before,
    .mobile-nav-menu .menu-item-has-children::after,
    .mobile-nav-menu .menu-item-has-children::before,
    .nav-menu .menu-item-has-children::after,
    .nav-menu .menu-item-has-children::before {
        display: none !important;
        content: none !important;
        height: 0 !important;
        width: 0 !important;
    }

    /* Block desktop hover triggers on mobile */
    .nav-menu .menu-item-has-children:hover > .sub-menu {
        display: none !important;
    }

    /* Active parent styling */
    .mobile-nav-menu > .menu-item-has-children.active > .menu-item-inner > a {
        color: var(--color-primary) !important;
    }

    /* Footer responsive */
    .footer-grid {
        grid-template-columns: 1fr !important;
        gap: var(--space-6) !important;
    }

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

    .site-footer .footer-col h4,
    .footer-col h4 {
        text-align: center !important;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }

    .footer-bottom-links {
        justify-content: center;
        flex-wrap: wrap;
    }
}