/* ============================================
   baotech - Modern Industrial Design System
   ============================================ */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=DM+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ============================================
   CSS Variables - Light Industrial Theme (Default)
   Metallic, modern, precision machinery aesthetic
   ============================================ */
:root {
    /* Background Colors - Brushed Aluminum / Steel */
    --bg-dark: #f4f6f9;
    --bg-card: #ffffff;
    --bg-elevated: #f8fafc;
    --bg-hover: #edf2f7;
    
    /* Accent Colors - Brand Blues from Logo */
    --accent-primary: #B72B2A;
    --accent-secondary: #C94A48;
    --accent-tertiary: #8F1F1E;
    --accent-success: #059669;
    --accent-warning: #d97706;
    --accent-danger: #dc2626;
    
    /* Gradients - Industrial Blue */
    --gradient-primary: linear-gradient(135deg, #B72B2A 0%, #C94A48 100%);
    --gradient-secondary: linear-gradient(135deg, #C94A48 0%, #8F1F1E 100%);
    --gradient-dark: linear-gradient(180deg, #f4f6f9 0%, #e8ecf1 100%);
    --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 250, 252, 0.95) 100%);
    
    /* Text Colors - Steel Grays */
    --text-primary: #1a2332;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-accent: #B72B2A;
    
    /* Border Colors - Subtle Metallic */
    --border-subtle: rgba(0, 0, 0, 0.06);
    --border-medium: rgba(0, 0, 0, 0.12);
    --border-accent: rgba(41, 170, 225, 0.3);
    
    /* Shadows - Soft Industrial Lighting */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 30px rgba(41, 170, 225, 0.12);
    --shadow-glow-strong: 0 0 40px rgba(41, 170, 225, 0.18);
    
    /* Glass Effect - Frosted Steel */
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(0, 0, 0, 0.06);
    --glass-blur: blur(20px);
    
    /* Typography */
    --font-display: 'Outfit', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* Legacy variable mapping for compatibility */
    --primary-color: #B72B2A;
    --secondary-color: #C94A48;
    --accent-color: #B72B2A;
    --hover-color: #8F1F1E;
    --text-color: #1a2332;
    --bg-color: #f4f6f9;
    --header-bg: rgba(255, 255, 255, 0.92);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --transition-speed: 0.3s;
    
    /* Footer - Dark mode colors for both themes */
    --footer-bg: #06060a;
    --footer-text: #f0f0f5;
    --footer-border: rgba(255, 255, 255, 0.06);
}

/* ============================================
   Dark Mode Theme - Original Dark Industrial
   ============================================ */
.dark-mode {
    /* Background Colors */
    --bg-dark: #0a0a0f;
    --bg-card: #12121a;
    --bg-elevated: #1a1a24;
    --bg-hover: #22222e;
    
    /* Accent Colors */
    --accent-primary: #D36A67;
    --accent-secondary: #E3A1A0;
    --accent-tertiary: #B72B2A;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #D36A67 0%, #E3A1A0 100%);
    --gradient-secondary: linear-gradient(135deg, #E3A1A0 0%, #B72B2A 100%);
    --gradient-dark: linear-gradient(180deg, #0a0a0f 0%, #12121a 100%);
    --gradient-card: linear-gradient(145deg, rgba(26, 26, 36, 0.8) 0%, rgba(18, 18, 26, 0.9) 100%);
    
    /* Text Colors */
    --text-primary: #f0f0f5;
    --text-secondary: #8888a0;
    --text-muted: #55556a;
    --text-accent: #D36A67;
    
    /* Border Colors */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-medium: rgba(255, 255, 255, 0.1);
    --border-accent: rgba(93, 216, 245, 0.3);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(93, 216, 245, 0.15);
    --shadow-glow-strong: 0 0 40px rgba(93, 216, 245, 0.25);
    
    /* Glass Effect */
    --glass-bg: rgba(18, 18, 26, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    
    /* Legacy variable mapping */
    --primary-color: #D36A67;
    --secondary-color: #E3A1A0;
    --accent-color: #D36A67;
    --hover-color: #B72B2A;
    --text-color: #f0f0f5;
    --bg-color: #0a0a0f;
    --header-bg: rgba(10, 10, 15, 0.85);
    --shadow-color: rgba(0, 0, 0, 0.5);
    
    /* Footer - Dark */
    --footer-bg: #06060a;
    --footer-text: #f0f0f5;
    --footer-border: var(--border-subtle);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background: var(--bg-dark);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
}

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

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

/* ============================================
   Utility Classes
   ============================================ */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glow {
    box-shadow: var(--shadow-glow);
}

.glow-strong {
    box-shadow: var(--shadow-glow-strong);
}

/* ============================================
   Sticky Header - Modern Glass Effect
   ============================================ */
.sticky-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--header-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    transition: all var(--transition-base);
}

.sticky-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem var(--space-lg);
    max-width: 100%;
}

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

.logo img {
    height: 56px;
    width: auto;
    transition: transform var(--transition-base);
}

.logo:hover img {
    transform: scale(1.05);
}

.toggle-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Header Buttons */
#theme-toggle-btn,
#language-toggle-btn {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-medium);
    background: var(--bg-elevated);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 1.1rem;
}

#theme-toggle-btn:hover,
#language-toggle-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

#language-icon {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

/* ============================================
   Main Layout
   ============================================ */
main {
    min-height: calc(100vh - 80px);
    background: var(--bg-dark);
}

/* ============================================
   Glass Card Component
   ============================================ */
.card-glass {
    background: var(--gradient-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.card-glass:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

/* ============================================
   Button Styles
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.875rem 1.75rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #0a0a0f;
    box-shadow: 0 4px 20px rgba(93, 216, 245, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(93, 216, 245, 0.4);
}

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

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: rgba(93, 216, 245, 0.1);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-medium);
}

/* ============================================
   Footer - Modern Dark Theme
   ============================================ */
footer {
    background: url('ft_bg_hwatech.jpeg') center/cover no-repeat;
    background-color: #06060a; /* fallback if image fails */
    border-top: 1px solid var(--footer-border);
    padding: var(--space-3xl) 0 var(--space-xl);
    margin-top: 0;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-3xl);
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.footer-brand-block {
    flex: 0 1 400px;
    max-width: 400px;
}

.footer-links-block {
    flex: 1;
    display: flex;
    justify-content: space-between;
    gap: var(--space-xl);
}

.footer-column {
    flex: 1;
    min-width: 160px;
}

.footer-logo {
    display: block;
    width: 100%;
    margin-bottom: var(--space-lg);
}

.footer-logo img {
    width: 50%;
    height: auto;
    opacity: 0.9;
    transition: all var(--transition-base);
}

/* Theme-based footer logo switching */
.footer-logo .logo-light {
    display: block;  /* Show white logo in light mode (default) */
}

.footer-logo .logo-dark {
    display: none;   /* Hide colored logo in light mode */
}

.dark-mode .footer-logo .logo-light {
    display: none;   /* Hide white logo in dark mode */
}

.dark-mode .footer-logo .logo-dark {
    display: block;  /* Show colored logo in dark mode */
}

.footer-logo:hover img {
    opacity: 1;
    transform: translateY(-3px);
}

.footer-heading {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--footer-text);
    margin-bottom: var(--space-lg);
    position: relative;
    padding-bottom: var(--space-sm);
}

.footer-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--footer-text);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

.footer-column:hover .footer-heading::after {
    width: 50px;
}

.footer-contact {
    margin-bottom: var(--space-lg);
}

.contact-item {
    margin-bottom: var(--space-md);
    color: var(--footer-text);
    transition: all var(--transition-base);
}

.contact-item:hover {
    color: var(--footer-text);
}

.contact-item span {
    font-size: 0.95rem;
    line-height: 1.5;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--footer-text);
    font-size: 0.95rem;
    display: inline-block;
    transition: all var(--transition-base);
    position: relative;
}

.footer-links a::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--footer-text);
    transition: width var(--transition-base);
}

.footer-links a:hover {
    color: var(--footer-text);
    transform: translateX(5px);
}

.footer-links a:hover::before {
    width: 100%;
}

.social-icons {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.social-icons {
    display: none; /* Hidden since we removed icons */
}

.copyright {
    text-align: center;
    margin-top: var(--space-2xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--footer-border);
    color: var(--footer-text);
    opacity: 0.8;
    font-size: 0.9rem;
}

.copyright a {
    color: var(--footer-text);
    text-decoration: underline;
}

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

/* ============================================
   Responsive Footer
   ============================================ */
@media screen and (max-width: 992px) {
    .footer-container {
        gap: var(--space-xl);
    }
    
    .footer-brand-block {
        flex: 0 1 300px;
    }
    
    .footer-column:last-child {
        display: none;
    }
}

@media screen and (max-width: 768px) {
    footer {
        padding: var(--space-2xl) 0 var(--space-lg);
    }
    
    .footer-container {
        flex-direction: column;
        align-items: center;
        gap: var(--space-xl);
        padding: 0 var(--space-lg);
        text-align: center;
    }
    
    .footer-brand-block {
        max-width: 100%;
        padding-bottom: var(--space-md);
        border-bottom: 1px solid var(--footer-border);
    }
    
    .footer-logo {
        display: flex;
        justify-content: center;
    }
    
    .footer-contact {
        margin-bottom: 0;
    }
    
    .footer-links-block {
        flex-direction: column;
        gap: var(--space-xl);
        align-items: center;
        width: 100%;
    }
    
    .footer-column {
        width: 100%;
        text-align: center;
    }
    
    .footer-column:last-child {
        display: block;
    }
    
    .footer-heading {
        text-align: center;
    }
    
    .footer-heading::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .contact-item {
        justify-content: center;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    .footer-links {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 0;
        margin: 0;
    }
    
    .footer-links li {
        text-align: center;
        width: 100%;
    }
    
    .footer-links a {
        display: inline-block;
        text-align: center;
    }
    
    .footer-links a:hover {
        transform: none;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(93, 216, 245, 0.2);
    }
    50% {
        box-shadow: 0 0 40px rgba(93, 216, 245, 0.4);
    }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-slide-in-left {
    animation: slideInLeft 0.6s ease forwards;
}

.animate-slide-in-right {
    animation: slideInRight 0.6s ease forwards;
}

/* Staggered animation delays */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* ============================================
   Scrollbar Styling
   ============================================ */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-dark);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--bg-hover);
}

/* ============================================
   Selection Styling
   ============================================ */
::selection {
    background: rgba(93, 216, 245, 0.3);
    color: var(--text-primary);
}

/* ============================================
   Form Elements
   ============================================ */
input, select, textarea {
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-primary);
    background: var(--bg-elevated);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    padding: 0.875rem 1rem;
    transition: all var(--transition-base);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(93, 216, 245, 0.15);
}

input::placeholder, textarea::placeholder {
    color: var(--text-muted);
}

/* ============================================
   Loading States
   ============================================ */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-subtle);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-elevated) 25%,
        var(--bg-hover) 50%,
        var(--bg-elevated) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

/* ============================================
   Responsive Header
   ============================================ */
@media screen and (max-width: 768px) {
    .sticky-header .container {
        padding: 0.5rem var(--space-md);
    }
    
    .logo img {
        height: 48px;
    }
    
    .toggle-container {
        gap: 8px;
    }
    
    #theme-toggle-btn,
    #language-toggle-btn {
        width: 38px;
        height: 38px;
        font-size: 1rem;
    }
}

@media screen and (max-width: 480px) {
    .logo img {
        height: 40px;
    }
    
    #theme-toggle-btn,
    #language-toggle-btn {
        width: 36px;
        height: 36px;
    }
}

/* ============================================
   Hamburger Navigation Menu
   ============================================ */

/* Hamburger Button */
.hamburger-btn {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-medium);
    background: var(--bg-elevated);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    position: relative;
    z-index: 1002;
}

.hamburger-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

.hamburger-icon {
    width: 20px;
    height: 14px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.hamburger-icon span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transform-origin: center;
}

.hamburger-btn:hover .hamburger-icon span {
    background: var(--accent-primary);
}

.hamburger-btn.active .hamburger-icon span {
    background: var(--bg-dark);
}

.hamburger-btn.active .hamburger-icon span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.hamburger-btn.active .hamburger-icon span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger-btn.active .hamburger-icon span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Nav Menu Backdrop */
.nav-menu-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    z-index: 1000;
}

.nav-menu-backdrop.active {
    opacity: 1;
    visibility: visible;
}

/* Nav Menu Panel */
.nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    max-width: 90vw;
    height: 100vh;
    background: var(--bg-card);
    border-left: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.nav-menu.active {
    transform: translateX(0);
}

/* Nav Menu Header */
.nav-menu-header {
    padding: var(--space-xl);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.nav-menu-close {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-medium);
    background: var(--bg-elevated);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    font-size: 1.25rem;
}

.nav-menu-close:hover {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--accent-danger);
    color: var(--accent-danger);
}

/* Nav Menu Content */
.nav-menu-content {
    flex: 1;
    padding: var(--space-lg);
    overflow-y: auto;
}

/* Nav Menu Items */
.nav-menu-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.nav-menu-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text-primary);
    background: transparent;
    border: 1px solid transparent;
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateX(30px);
}

.nav-menu.active .nav-menu-item {
    opacity: 1;
    transform: translateX(0);
}

.nav-menu.active .nav-menu-item:nth-child(1) { transition-delay: 0.1s; }
.nav-menu.active .nav-menu-item:nth-child(2) { transition-delay: 0.15s; }
.nav-menu.active .nav-menu-item:nth-child(3) { transition-delay: 0.2s; }
.nav-menu.active .nav-menu-item:nth-child(4) { transition-delay: 0.25s; }

.nav-menu-item:hover {
    background: var(--bg-elevated);
    border-color: var(--border-subtle);
    transform: translateX(8px);
}

.nav-menu-item.active {
    background: rgba(93, 216, 245, 0.1);
    border-color: var(--border-accent);
}

.nav-menu-item-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(93, 216, 245, 0.1) 0%, rgba(138, 228, 248, 0.08) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.nav-menu-item:hover .nav-menu-item-icon {
    background: linear-gradient(135deg, rgba(93, 216, 245, 0.2) 0%, rgba(138, 228, 248, 0.15) 100%);
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(93, 216, 245, 0.2);
}

.nav-menu-item-icon svg {
    width: 22px;
    height: 22px;
    stroke: var(--accent-primary);
    stroke-width: 1.5;
    fill: none;
    transition: all var(--transition-base);
}

.nav-menu-item:hover .nav-menu-item-icon svg {
    stroke: var(--text-primary);
    filter: drop-shadow(0 0 8px rgba(93, 216, 245, 0.5));
}

.nav-menu-item-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-menu-item-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.nav-menu-item:hover .nav-menu-item-title {
    color: var(--accent-primary);
}

.nav-menu-item-subtitle {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Nav Menu Footer */
.nav-menu-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-elevated);
}

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

.nav-menu-contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.nav-menu-contact-item svg {
    width: 16px;
    height: 16px;
    stroke: var(--accent-primary);
    stroke-width: 2;
    fill: none;
    flex-shrink: 0;
}

/* Body scroll lock when menu is open */
body.nav-menu-open {
    overflow: hidden;
}

/* Responsive Nav Menu */
@media screen and (max-width: 768px) {
    .hamburger-btn {
        width: 38px;
        height: 38px;
    }
    
    .hamburger-icon {
        width: 18px;
        height: 12px;
    }
    
    .hamburger-btn.active .hamburger-icon span:nth-child(1) {
        transform: translateY(5px) rotate(45deg);
    }
    
    .hamburger-btn.active .hamburger-icon span:nth-child(3) {
        transform: translateY(-5px) rotate(-45deg);
    }
    
    .nav-menu {
        width: 100%;
        max-width: 100%;
    }
    
    .nav-menu-header {
        padding: var(--space-lg);
    }
    
    .nav-menu-item {
        padding: var(--space-md);
    }
    
    .nav-menu-item-icon {
        width: 40px;
        height: 40px;
    }
    
    .nav-menu-item-icon svg {
        width: 20px;
        height: 20px;
    }
}

@media screen and (max-width: 480px) {
    .hamburger-btn {
        width: 36px;
        height: 36px;
    }
    
    .hamburger-icon {
        width: 16px;
        height: 11px;
    }
    
    .hamburger-btn.active .hamburger-icon span:nth-child(1) {
        transform: translateY(4.5px) rotate(45deg);
    }
    
    .hamburger-btn.active .hamburger-icon span:nth-child(3) {
        transform: translateY(-4.5px) rotate(-45deg);
    }
    
    .nav-menu-logo {
        height: 32px;
    }
}

/* ============================================
   Machine Specifications Accordion
   ============================================ */

/* Accordion Container */
.specs-accordion {
    margin-top: var(--space-xl);
}

.specs-accordion-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.specs-accordion-title::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

/* Accordion Section */
.accordion-section {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

.accordion-section:hover {
    border-color: var(--border-medium);
}

.accordion-section.active {
    border-color: var(--accent-primary);
    box-shadow: 0 0 20px rgba(93, 216, 245, 0.1);
}

/* Accordion Header */
.accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-xl);
    cursor: pointer;
    background: var(--bg-elevated);
    transition: all var(--transition-base);
    user-select: none;
}

.accordion-header:hover {
    background: var(--bg-hover);
}

.accordion-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: 0;
}

.accordion-title-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.accordion-title-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--text-secondary);
    stroke-width: 1.5;
    fill: none;
    transition: all var(--transition-base);
}

.accordion-section:hover .accordion-title-icon svg {
    stroke: var(--accent-primary);
}

.accordion-section.active .accordion-title-icon svg {
    stroke: var(--accent-primary);
    filter: drop-shadow(0 0 6px rgba(93, 216, 245, 0.5));
}

.accordion-chevron {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    transition: transform var(--transition-base);
}

.accordion-section.active .accordion-chevron {
    transform: rotate(180deg);
    color: var(--accent-primary);
}

/* Accordion Content */
.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}

.accordion-section.active .accordion-content {
    max-height: 3000px; /* Large enough for content */
}

.accordion-body {
    padding: var(--space-xl);
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-card);
}

/* Spec Grid inside accordion */
.accordion-specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
}

.accordion-spec-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    padding: var(--space-md);
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    transition: all var(--transition-base);
}

.accordion-spec-item:hover {
    border-color: var(--border-medium);
    background: var(--bg-hover);
}

.accordion-spec-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.accordion-spec-value {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* Axes Spec Grid (special layout for X/Y/Z) */
.axes-spec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-sm);
}

.axis-spec-item {
    text-align: center;
    padding: var(--space-md);
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
}

.axis-spec-item .axis-label {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: var(--space-xs);
}

.axis-spec-item .axis-value {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Spindle Type Badge */
.spindle-type-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: rgba(93, 216, 245, 0.15);
    color: var(--accent-primary);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-md);
}

/* Accessories Table */
.accessories-table-container {
    overflow-x: auto;
    margin-top: var(--space-md);
}

.accessories-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    min-width: 500px;
}

.accessories-table th,
.accessories-table td {
    padding: var(--space-sm) var(--space-md);
    text-align: center;
    border-bottom: 1px solid var(--border-subtle);
}

.accessories-table th {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
}

.accessories-table td:first-child {
    text-align: left;
    color: var(--text-primary);
    font-weight: 500;
}

.accessories-table tbody tr {
    transition: background var(--transition-fast);
}

.accessories-table tbody tr:hover {
    background: var(--bg-hover);
}

/* Availability indicators */
.availability-s {
    color: var(--accent-success);
    font-weight: 700;
}

.availability-o {
    color: var(--accent-warning);
    font-weight: 600;
}

.availability-x {
    color: var(--text-muted);
}

/* Accessory Category Header */
.accessory-category {
    margin-bottom: var(--space-lg);
}

.accessory-category:last-child {
    margin-bottom: 0;
}

.accessory-category-title {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--border-subtle);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Software Features List */
.software-features-list {
    display: grid;
    gap: var(--space-md);
}

.software-feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    transition: all var(--transition-base);
}

.software-feature-item:hover {
    border-color: var(--border-medium);
}

.software-feature-code {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-primary);
    background: rgba(93, 216, 245, 0.1);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.software-feature-content {
    flex: 1;
}

.software-feature-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.software-feature-description {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.software-feature-availability {
    font-size: 0.75rem;
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
}

.software-feature-availability.standard {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-success);
}

.software-feature-availability.optional {
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent-warning);
}

/* NC Specs Section */
.nc-controller-section {
    margin-bottom: var(--space-xl);
}

.nc-controller-section:last-child {
    margin-bottom: 0;
}

.nc-controller-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nc-controller-title::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
}

.nc-category {
    margin-bottom: var(--space-md);
}

.nc-category-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-sm);
}

.nc-specs-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-sm);
}

.nc-spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.nc-spec-name {
    color: var(--text-secondary);
}

.nc-spec-value {
    font-family: var(--font-mono);
    color: var(--text-primary);
    font-weight: 500;
}

/* Empty State */
.accordion-empty-state {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-muted);
}

.accordion-empty-state-icon {
    font-size: 2rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.accordion-empty-state-text {
    font-size: 0.9rem;
}

/* Responsive Accordion */
@media screen and (max-width: 768px) {
    .accordion-header {
        padding: var(--space-md) var(--space-lg);
    }
    
    .accordion-body {
        padding: var(--space-lg);
    }
    
    .accordion-specs-grid {
        grid-template-columns: 1fr;
    }
    
    .axes-spec-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .accordion-title {
        font-size: 0.9rem;
    }
    
    .accordion-title-icon {
        width: 26px;
        height: 26px;
    }
    
    .accordion-title-icon svg {
        width: 22px;
        height: 22px;
    }
    
    .software-feature-item {
        flex-direction: column;
        align-items: stretch;
    }
    
    .software-feature-code {
        align-self: flex-start;
    }
    
    .nc-specs-list {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 480px) {
    .accordion-header {
        padding: var(--space-md);
    }
    
    .accordion-body {
        padding: var(--space-md);
    }
    
    .axes-spec-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .accordion-title-icon {
        width: 24px;
        height: 24px;
    }
    
    .accordion-title-icon svg {
        width: 19px;
        height: 19px;
    }
    
    .accessories-table {
        font-size: 0.75rem;
    }
    
    .accessories-table th,
    .accessories-table td {
        padding: var(--space-xs) var(--space-sm);
    }
}

/* Accordion icons are now rendered as inline SVG in dettaglio.html */