/* =============================================
   STP Motors LLC — Classic & Elegant Stylesheet
   Palette: Midnight Blue (#0F172A) + Mint (#10B981)
   ============================================= */

/* ---------- CSS Custom Properties ---------- */
:root {
    --color-midnight: #0F172A;
    --color-midnight-light: #1E293B;
    --color-midnight-dark: #020617;
    --color-mint: #10B981;
    --color-mint-light: #34D399;
    --color-mint-dark: #059669;
    --color-cream: #F8FAFC;
    --color-cream-dark: #F1F5F9;
    --color-text: #1E293B;
    --color-text-light: #64748B;
    --color-text-muted: #94A3B8;
    --color-white: #FFFFFF;
    --color-border: #E2E8F0;
    
    --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 10px 25px -3px rgba(15, 23, 42, 0.1), 0 4px 10px -4px rgba(15, 23, 42, 0.05);
    --shadow-xl: 0 20px 50px -12px rgba(15, 23, 42, 0.15);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition: all 0.3s 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: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-cream);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-midnight);
}

.text-mint {
    color: var(--color-mint);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 0.938rem;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-mint);
    color: var(--color-white);
    border-color: var(--color-mint);
}

.btn-primary:hover {
    background-color: var(--color-mint-dark);
    border-color: var(--color-mint-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline-light {
    background-color: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline-light:hover {
    background-color: var(--color-white);
    color: var(--color-midnight);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.btn-outline-dark {
    background-color: transparent;
    color: var(--color-midnight);
    border-color: var(--color-midnight);
}

.btn-outline-dark:hover {
    background-color: var(--color-midnight);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* ---------- Section Labels ---------- */
.section-label {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-mint);
    margin-bottom: 12px;
    position: relative;
    padding-left: 32px;
}

.section-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 2px;
    background-color: var(--color-mint);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.063rem;
    color: var(--color-text-light);
    max-width: 520px;
    line-height: 1.7;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header .section-subtitle {
    margin: 0 auto;
}

/* ---------- Navbar ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: var(--transition);
}

.navbar.scrolled {
    background-color: rgba(15, 23, 42, 0.98);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.02em;
}

.logo-sub {
    font-family: var(--font-sans);
    font-size: 0.688rem;
    font-weight: 600;
    color: var(--color-mint);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.75);
    letter-spacing: 0.02em;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background-color: var(--color-mint);
    transition: var(--transition);
}

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

.nav-link:hover::after {
    width: 100%;
}

/* Nav toggle (mobile) */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-white);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Mobile Menu ---------- */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    background-color: var(--color-midnight);
    display: flex;
    flex-direction: column;
    padding: 24px;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.open {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 48px;
}

.close-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-white);
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.mobile-link {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    color: var(--color-white);
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    display: block;
}

.mobile-link:hover {
    color: var(--color-mint);
}

.mobile-cta {
    margin-top: 32px;
}

.mobile-cta .btn {
    width: 100%;
    text-align: center;
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-color: var(--color-midnight-dark);
    background-image: url('https://images.pexels.com/photos/5864245/pexels-photo-5864245.jpeg?auto=compress&cs=tinysrgb&fit=crop&w=1920&h=1080');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(2, 6, 23, 0.85) 0%,
        rgba(15, 23, 42, 0.75) 50%,
        rgba(2, 6, 23, 0.90) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    background-color: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 50px;
    font-size: 0.813rem;
    font-weight: 500;
    color: var(--color-mint-light);
    letter-spacing: 0.05em;
    margin-bottom: 32px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-mint);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.188rem);
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.688rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.4), transparent);
    animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- Features ---------- */
.features {
    padding: 120px 0;
    background-color: var(--color-cream);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-mint);
    margin-bottom: 24px;
}

.feature-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 0.938rem;
    color: var(--color-text-light);
    line-height: 1.75;
}

/* ---------- Inventory ---------- */
.inventory {
    padding: 120px 0;
    background-color: var(--color-white);
}

.inventory-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 64px;
}

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

.inventory-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.inventory-img {
    position: relative;
    overflow: hidden;
    aspect-ratio: 3/2;
}

.inventory-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.inventory-card:hover .inventory-img img {
    transform: scale(1.05);
}

.inventory-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 12px;
    background-color: var(--color-mint);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    border-radius: 50px;
    text-transform: uppercase;
}

.inventory-info {
    padding: 24px;
}

.inventory-name {
    font-size: 1.188rem;
    margin-bottom: 8px;
}

.inventory-desc {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.inventory-cta {
    text-align: center;
    padding: 48px;
    background-color: var(--color-midnight);
    border-radius: var(--radius-xl);
}

.inventory-cta p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.938rem;
    margin-bottom: 20px;
}

/* ---------- Story ---------- */
.story {
    padding: 120px 0;
    background-color: var(--color-cream);
}

.story-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.story-image {
    position: relative;
}

.story-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.story-accent {
    position: absolute;
    bottom: -24px;
    right: -24px;
    width: 200px;
    height: 200px;
    background-color: var(--color-mint);
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0.15;
}

.story-content .section-label {
    padding-left: 0;
}

.story-content .section-label::before {
    display: none;
}

.story-text {
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.85;
    margin-bottom: 20px;
}

.story-stats {
    display: flex;
    gap: 48px;
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.stat-number {
    display: block;
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-midnight);
    line-height: 1;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 0.813rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ---------- Contact ---------- */
.contact {
    padding: 120px 0;
    background-color: var(--color-white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-info .section-label {
    padding-left: 0;
}

.contact-info .section-label::before {
    display: none;
}

.contact-desc {
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-sm);
    color: var(--color-mint);
}

.contact-item strong {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.813rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-midnight);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 0.938rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

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

.contact-item a:hover {
    color: var(--color-mint);
}

.map-container {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
}

/* Contact Form */
.contact-form-wrapper {
    background-color: var(--color-cream);
    border-radius: var(--radius-lg);
    padding: 48px;
    border: 1px solid var(--color-border);
}

.form-title {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.form-subtitle {
    font-size: 0.938rem;
    color: var(--color-text-light);
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.813rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-midnight);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.938rem;
    color: var(--color-text);
    background-color: var(--color-white);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-mint);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

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

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

.form-success {
    display: none;
    text-align: center;
    padding: 40px 20px;
}

.form-success.show {
    display: block;
}

.success-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(16, 185, 129, 0.1);
    border-radius: 50%;
    color: var(--color-mint);
}

.form-success h4 {
    font-size: 1.375rem;
    margin-bottom: 8px;
    color: var(--color-midnight);
}

.form-success p {
    font-size: 0.938rem;
    color: var(--color-text-light);
}

/* ---------- Footer ---------- */
.footer {
    background-color: var(--color-midnight);
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 64px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo-text {
    font-size: 1.5rem;
}

.footer-tagline {
    font-size: 0.938rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.75;
    margin-top: 16px;
    max-width: 300px;
}

.footer-links h4 {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-white);
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a,
.footer-links address {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
    font-style: normal;
    line-height: 1.7;
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
    font-size: 0.813rem;
    color: rgba(255, 255, 255, 0.35);
}

.footer-location {
    color: rgba(255, 255, 255, 0.25);
}

/* ---------- Scroll Reveal ---------- */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .inventory-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .story-grid {
        gap: 48px;
    }
    
    .contact-wrapper {
        gap: 48px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 100px 20px 60px;
    }
    
    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .features {
        padding: 80px 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 32px 24px;
    }
    
    .inventory {
        padding: 80px 0;
    }
    
    .inventory-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .inventory-cta {
        padding: 32px 24px;
    }
    
    .story {
        padding: 80px 0;
    }
    
    .story-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .story-image {
        order: -1;
    }
    
    .story-accent {
        width: 120px;
        height: 120px;
        bottom: -16px;
        right: -16px;
    }
    
    .story-stats {
        gap: 24px;
    }
    
    .contact {
        padding: 80px 0;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .contact-form-wrapper {
        padding: 32px 24px;
    }
    
    .footer {
        padding: 60px 0 0;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .hero-badge {
        font-size: 0.688rem;
        padding: 6px 14px;
    }
    
    .story-stats {
        flex-direction: column;
        gap: 20px;
    }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .reveal {
        opacity: 1;
        transform: none;
    }
}