/* SmartCarMov Design System */
/* SmartCarMov Design System - Premium Evolution */
:root {
    --primary-red: #D91E24;
    --primary-red-rgb: 217, 30, 36;
    --primary-black: #1A1A1A;
    --dark-black: #080808;
    --white: #FFFFFF;
    --white-rgb: 255, 255, 255;
    --light-grey: #F0F2F5;
    --medium-grey: #D1D5DB;
    --text-color: #2D3748;
    --text-muted: #718096;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-premium: 0 20px 40px rgba(0, 0, 0, 0.08);
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--primary-black);
    line-height: 1.2;
    font-weight: 800;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
}

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Glassmorphism Utilities */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.glass-dark {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Animation Classes */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.2, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Header & Navigation */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.header.scrolled {
    padding: 10px 0;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 48px;
    transition: var(--transition-smooth);
}

.nav {
    display: flex;
    gap: 40px;
}

.nav-link {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--primary-black);
    position: relative;
    letter-spacing: -0.01em;
}

.nav-link:hover {
    color: var(--primary-red);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-red);
    transition: var(--transition-smooth);
}

.nav-link:hover::after {
    width: 24px;
}

/* Dropdown Menu */
.nav-item {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    padding: 10px 0;
    margin-top: 5px;
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: 10px 20px;
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.dropdown-item:hover {
    background-color: var(--light-grey);
    color: var(--primary-red);
    padding-left: 25px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    text-align: center;
    transition: var(--transition-smooth);
    border: none;
    gap: 8px;
}

.btn-primary {
    background-color: var(--primary-red);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(var(--primary-red-rgb), 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-black);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-outline {
    border: 2px solid var(--primary-red);
    color: var(--primary-red);
    background-color: transparent;
}

.btn-outline:hover {
    background-color: var(--primary-red);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 4px 14px rgba(var(--primary-red-rgb), 0.2);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 100%), url('./image/hero-bg.png');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    color: var(--white);
    padding-top: 100px;
    position: relative;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 10;
}

.hero-content h1 {
    font-size: 4.5rem;
    color: var(--white);
    margin-bottom: 24px;
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1;
}

.hero-content h1 span {
    color: var(--primary-red);
    display: block;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
}

/* Sections General */
.section {
    padding: 120px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 80px;
}

.section-title h2 {
    font-size: 3rem;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-title p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.section-title .underline {
    width: 60px;
    height: 4px;
    background-color: var(--primary-red);
    margin: 20px auto 0;
    border-radius: 2px;
}

/* Products/Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.feature-card {
    background: var(--white);
    padding: 48px 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-premium);
    text-align: center;
    transition: var(--transition-smooth);
    border: 1px solid rgba(0, 0, 0, 0.03);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-red);
    transform: scaleX(0);
    transition: var(--transition-smooth);
    transform-origin: left;
}

.feature-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.12);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card i {
    font-size: 3.5rem;
    color: var(--primary-red);
    margin-bottom: 24px;
    display: inline-block;
}

/* Mobile Nav Toggle */
.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-black);
}

.nav.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--white);
    padding: 20px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* PTT Section */
.ptt-section {
    background-color: var(--white);
}

.ptt-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav {
        display: none;
    }

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

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .section {
        padding: 60px 0;
    }
}