/* 
 * Comworks Theme - Premium Industrial Tech 
 * Dark Mode Base with precision accents
 */

:root {
    --bg-dark: #0a0e14;
    --bg-card: #151a23;
    --text-primary: #f0f2f5;
    --text-secondary: #94a3b8;
    --accent-primary: #38bdf8;
    /* Sky Blue - Digital/Air */
    --accent-secondary: #64748b;
    /* Slate - Structural/Concrete */
    --gradient-hero: linear-gradient(135deg, rgba(10, 14, 20, 0.95) 0%, rgba(21, 26, 35, 0.8) 100%);

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Noto Sans JP', sans-serif;

    --container-width: 1200px;
    --header-height: 80px;
    --radius-md: 8px;
    --radius-lg: 16px;

    --ease-out: cubic-bezier(0.215, 0.61, 0.355, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0.02em;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.narrow-container {
    max-width: 800px;
}

.section-padding {
    padding: 100px 0;
}

.bg-darker {
    background-color: #05070a;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: 50px;
    /* Pill shape */
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
    text-align: center;
}

.btn-primary {
    background-color: var(--text-primary);
    color: var(--bg-dark);
    border: 1px solid var(--text-primary);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--text-primary);
    transform: translateY(-2px);
}

.btn-accent {
    background-color: var(--accent-primary);
    color: #000;
    border: 1px solid var(--accent-primary);
}

.btn-accent:hover {
    background-color: transparent;
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    border-color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

/* Header */
#main-header {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(10, 14, 20, 0.85);
    backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo a {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--text-primary);
}

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

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--accent-primary);
    transition: width 0.3s ease;
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1100;
    padding: 10px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    margin: 5px 0;
    transition: all 0.3s ease;
}

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

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

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

/* Hero Section */
#hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    /* background-image: url('assets/hero-bg.webp'); Fallback to beautiful technical gradient */
    background:
        linear-gradient(rgba(10, 14, 20, 0.8), rgba(10, 14, 20, 0.8)),
        radial-gradient(circle at 20% 50%, rgba(56, 189, 248, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(100, 116, 139, 0.1) 0%, transparent 50%),
        #0a0e14;
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding-top: 60px;
}

.hero-title {
    font-size: 5rem;
    line-height: 1.1;
    margin-bottom: 24px;
    font-weight: 700;
}

.hero-title span {
    display: block;
}

.hero-title .accent {
    color: var(--accent-primary);
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    opacity: 0.6;
}

.scroll-indicator span {
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.scroll-indicator .line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--text-primary), transparent);
}

/* Services Section */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 16px;
    background: linear-gradient(90deg, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.service-card {
    background: var(--bg-card);
    padding: 48px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    border-color: rgba(56, 189, 248, 0.2);
}

.card-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 24px;
    color: var(--accent-primary);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.service-card h4 {
    font-size: 1rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
    font-weight: 500;
}

.service-list {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.service-list li {
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
    color: var(--text-secondary);
}

.service-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
}

/* About Section */
.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-lead {
    font-size: 1.8rem;
    margin-bottom: 24px;
    line-height: 1.4;
}

.company-profile {
    margin-top: 40px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
}

.company-profile dl {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 16px;
}

.company-profile dt {
    color: var(--text-secondary);
    font-weight: 500;
}

.image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    background: #222;
}

.placeholder-img {
    width: 100%;
    height: 100%;
    background:
        linear-gradient(45deg, rgba(56, 189, 248, 0.05) 0%, transparent 100%),
        conic-gradient(from 180deg at 50% 50%, #151a23 0%, #1e293b 50%, #151a23 100%);
    position: relative;
}

.placeholder-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(45deg,
            rgba(255, 255, 255, 0.03) 0,
            rgba(255, 255, 255, 0.03) 1px,
            transparent 1px,
            transparent 10px);
}

/* Contact Section */
.contact-form {
    background: var(--bg-card);
    padding: 48px;
    border-radius: var(--radius-lg);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px;
    background: rgba(10, 14, 20, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.submit-btn {
    width: 100%;
    margin-top: 16px;
}

/* Footer */
#main-footer {
    padding: 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    background-color: #05070a;
}

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

.footer-logo {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: 0.1em;
}

.copyright {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--bg-dark);
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 40px;
        transition: right 0.4s var(--ease-out);
        z-index: 1050;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: 1.5rem;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-title {
        font-size: 3rem;
    }

    .split-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        order: -1;
    }

    .footer-content {
        flex-direction: column;
        gap: 20px;
    }
}

/* Animations Logic classes (triggered by JS) */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in {
    opacity: 0;
    transition: opacity 1s ease;
}

.visible {
    opacity: 1;
    transform: translateY(0) translateX(0);
}