/* =============================================
   优铠科技 U-KAI Technology - Main Stylesheet
   ============================================= */

/* CSS Variables */
:root {
    --color-primary: #1e3a5f;
    --color-primary-dark: #152a45;
    --color-primary-light: #2a4a73;
    --color-accent: #3b82f6;
    --color-accent-hover: #2563eb;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-text-lighter: #94a3b8;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-dark: #0f172a;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --color-success: #10b981;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 6px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* =============================================
   Navigation
   ============================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 24px;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom-color: var(--color-border-light);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
    transition: var(--transition);
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-zh {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
    letter-spacing: 1px;
}

.logo-en {
    font-size: 10px;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 2px;
    line-height: 1.2;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-light);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    background: rgba(30, 58, 95, 0.06);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 2px;
    background: var(--color-accent);
    border-radius: 1px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    background: transparent;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-light);
    transition: var(--transition);
    font-family: inherit;
}

.lang-switch:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.lang-current {
    color: var(--color-primary);
}

.lang-separator {
    color: var(--color-text-lighter);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* =============================================
   Hero Section
   ============================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 24px 80px;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #f1f5f9 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    top: 50%;
    right: -100px;
    transform: translateY(-50%);
    background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(30, 58, 95, 0.06);
    border: 1px solid rgba(30, 58, 95, 0.1);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 32px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-primary);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.title-line {
    display: block;
}

.title-line.accent {
    color: var(--color-accent);
    position: relative;
}

.hero-desc {
    font-size: clamp(16px, 2vw, 20px);
    color: var(--color-text-light);
    max-width: 560px;
    line-height: 1.7;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.hero-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
    opacity: 0.7;
}

.mold-visual {
    position: relative;
    width: 400px;
    height: 400px;
}

.mold-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(30, 58, 95, 0.1);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.mold-ring-1 { width: 100%; height: 100%; }
.mold-ring-2 { width: 75%; height: 75%; }
.mold-ring-3 { width: 50%; height: 50%; }

/* 罗马数字表盘 */
.roman-numerals {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 2;
}

.roman-numerals span {
    position: absolute;
    top: 50%;
    left: 50%;
    font-size: 16px;
    font-weight: 900;
    color: var(--color-primary);
    opacity: 0.55;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Noto Sans SC', 'SimHei', 'Heiti SC', sans-serif;
    transform: rotate(calc(var(--n) * 30deg)) translateY(-180px) rotate(calc(var(--n) * -30deg));
}

/* 指针 */
.hand {
    position: absolute;
    bottom: 50%;
    left: 50%;
    transform-origin: bottom center;
    border-radius: 4px;
    z-index: 4;
    transform: translateX(-50%) rotate(0deg);
}

.hour-hand {
    width: 5px;
    height: 80px;
    background: linear-gradient(to top, #1e3a5f, #2a4a73);
    opacity: 0.9;
}

.minute-hand {
    width: 3px;
    height: 120px;
    background: linear-gradient(to top, #0ea5e9, #38bdf8);
    opacity: 0.9;
}

.second-hand {
    width: 2px;
    height: 150px;
    background: linear-gradient(to top, #dc2626, #ef4444);
    opacity: 0.95;
}

.second-hand::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: #ef4444;
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.5);
}

.mold-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    color: var(--color-primary);
    opacity: 0.3;
}

.mold-core svg {
    width: 100%;
    height: 100%;
}



@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero-stats {
    display: flex;
    gap: 48px;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    font-size: 13px;
    color: var(--color-text-lighter);
    margin-top: 6px;
    font-weight: 500;
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-lighter);
    font-size: 12px;
    font-weight: 500;
    animation: bounce 2s infinite;
}

.scroll-mouse {
    width: 20px;
    height: 32px;
    border: 2px solid var(--color-text-lighter);
    border-radius: 10px;
    position: relative;
}

.scroll-wheel {
    width: 4px;
    height: 6px;
    background: var(--color-text-lighter);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s infinite;
}

@keyframes scrollWheel {
    0%, 100% { top: 6px; opacity: 1; }
    50% { top: 16px; opacity: 0.3; }
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* =============================================
   Buttons
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
    letter-spacing: 0.3px;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 14px rgba(30, 58, 95, 0.25);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(30, 58, 95, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    background: rgba(30, 58, 95, 0.04);
}

.btn-large {
    padding: 16px 40px;
    font-size: 16px;
    border-radius: var(--radius-lg);
}

/* =============================================
   Sections
   ============================================= */
.section {
    padding: 100px 0;
}

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

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(59, 130, 246, 0.08);
    color: var(--color-accent);
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: clamp(28px, 3vw, 40px);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 17px;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* =============================================
   About Section
   ============================================= */
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.about-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition);
}

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

.about-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(30, 58, 95, 0.06) 100%);
    border-radius: var(--radius);
    color: var(--color-accent);
}

.about-icon svg {
    width: 32px;
    height: 32px;
}

.about-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.about-card p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* =============================================
   Services Section
   ============================================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

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

.service-image {
    height: 200px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.service-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.08) 0%, transparent 60%);
}

.service-placeholder {
    color: rgba(255, 255, 255, 0.9);
    width: 80px;
    height: 80px;
    position: relative;
    z-index: 1;
}

.service-placeholder svg {
    width: 100%;
    height: 100%;
}

.service-content {
    padding: 32px;
}

.service-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.service-content p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.service-list li {
    font-size: 14px;
    color: var(--color-text);
    padding-left: 20px;
    position: relative;
    font-weight: 500;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* =============================================
   Products Section
   ============================================= */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    position: relative;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

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

.product-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 120px;
    height: 120px;
    background: var(--bg-color);
    opacity: 0.06;
    border-radius: 0 0 0 100%;
    transition: var(--transition);
}

.product-card:hover .product-bg {
    opacity: 0.1;
    width: 140px;
    height: 140px;
}

.product-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 24px;
    color: var(--bg-color);
    position: relative;
    z-index: 1;
}

.product-icon svg {
    width: 100%;
    height: 100%;
}

.product-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}

.product-card p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* =============================================
   Advantages Section
   ============================================= */
.advantages-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
    align-items: center;
}

.advantages-visual {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px dashed rgba(30, 58, 95, 0.15);
}

.tech-circle-1 {
    width: 80%;
    height: 80%;
    animation: rotate 40s linear infinite;
}

.tech-circle-2 {
    width: 60%;
    height: 60%;
    animation: rotate 30s linear infinite reverse;
}

.tech-circle-3 {
    width: 40%;
    height: 40%;
    animation: rotate 20s linear infinite;
}

.tech-center {
    width: 100px;
    height: 100px;
    color: var(--color-primary);
    opacity: 0.2;
}

.tech-center svg {
    width: 100%;
    height: 100%;
}

.advantages-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.advantage-item {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.advantage-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.25;
    line-height: 1;
    min-width: 48px;
    font-variant-numeric: tabular-nums;
}

.advantage-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.advantage-content p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* =============================================
   CTA Section
   ============================================= */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
}

.cta-content {
    position: relative;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 32px;
    line-height: 1.7;
}

.cta-section .btn-primary {
    background: white;
    color: var(--color-primary);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.cta-section .btn-primary:hover {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* =============================================
   Contact Section
   ============================================= */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-card {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius);
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--color-border);
    box-shadow: var(--shadow);
}

.contact-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(30, 58, 95, 0.06) 100%);
    border-radius: var(--radius-sm);
    color: var(--color-accent);
}

.contact-icon svg {
    width: 20px;
    height: 20px;
}

.contact-card h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-card p {
    font-size: 15px;
    color: var(--color-primary);
    font-weight: 500;
}

.contact-form-wrapper {
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-bg);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.08);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    width: 100%;
    margin-top: 8px;
}

/* =============================================
   Footer
   ============================================= */
.footer {
    background: var(--color-bg-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 80px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand .logo-icon {
    color: white;
}

.footer-brand .logo-zh {
    color: white;
}

.footer-brand .logo-en {
    color: var(--color-accent);
}

.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.55);
    max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 14px;
    font-weight: 600;
    color: white;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.55);
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

.footer-contact p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 8px;
    line-height: 1.6;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

/* =============================================
   Toast
   ============================================= */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-primary);
    color: white;
    padding: 14px 28px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast-icon {
    width: 22px;
    height: 22px;
    background: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

/* =============================================
   Scroll Animations
   ============================================= */
[data-aos] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

[data-aos="fade-left"] {
    transform: translateX(24px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-right"] {
    transform: translateX(-24px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.92);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}

/* =============================================
   Responsive
   ============================================= */
@media (max-width: 1024px) {
    .hero-visual {
        display: none;
    }

    .advantages-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .advantages-visual {
        max-width: 400px;
        margin: 0 auto;
    }

    .contact-layout {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px 32px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 16px 24px;
        gap: 4px;
        border-bottom: 1px solid var(--color-border-light);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-link {
        width: 100%;
        padding: 12px 16px;
        font-size: 15px;
    }

    .mobile-toggle {
        display: flex;
    }

    .mobile-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .hero {
        padding: 120px 24px 60px;
    }

    .hero-stats {
        gap: 32px;
    }

    .about-grid,
    .services-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 64px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .cta-section {
        padding: 64px 0;
    }

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

    .contact-form-wrapper {
        padding: 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        margin-bottom: 40px;
    }

    .footer-desc {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .stat-item {
        flex-direction: row;
        align-items: baseline;
        gap: 8px;
    }
}