/* 
   Theme: White, Orange, Black, Silver
   Fonts: Lora (EN), Anuphan (TH)
*/

:root {
    /* Color Palette */
    --color-black: #1a1a1a;
    --color-dark-grey: #333333;
    --color-silver: #e5e7eb;
    --color-silver-light: #f3f4f6;
    --color-white: #ffffff;
    --color-orange: #f97316;
    --color-orange-hover: #ea580c;

    /* Semantic Colors */
    --primary: var(--color-black);
    --secondary: var(--color-silver);
    --accent: var(--color-orange);
    --bg-body: var(--color-white);
    --text-main: var(--color-black);
    --text-muted: #6b7280;

    /* UI Tokens */
    --radius: 4px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --container-width: 1200px;
    --header-height: 70px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Font Logic */
body.lang-en {
    font-family: 'Lora', serif;
}

body.lang-th {
    font-family: 'Anuphan', sans-serif;
}

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

ul {
    list-style: none;
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1.5rem;
}

/* Layout Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.bg-silver {
    background-color: var(--color-silver-light);
}

.bg-dark {
    background-color: var(--color-black);
    color: var(--color-white);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--color-silver);
    z-index: 1000;
    display: flex;
    align-items: center;
    backdrop-filter: blur(8px);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.02em;
}

.logo .highlight {
    color: var(--accent);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-dark-grey);
}

.nav-links a:hover {
    color: var(--accent);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-lang {
    background: transparent;
    border: 1px solid var(--color-silver);
    padding: 6px 12px;
    border-radius: var(--radius);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    transition: var(--transition);
}

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

.mobile-menu-btn {
    display: none;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    margin-top: var(--header-height);
    background-color: var(--color-black);
    color: var(--color-white);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, #333 0%, #000 100%);
    opacity: 0.8;
}

.hero-content {
    position: relative;
    z-index: 1;
    width: 100%;
}

.hero-text {
    max-width: 700px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #fff, #9ca3af);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: #d1d5db;
    margin-bottom: 2.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    gap: 8px;
}

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

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

.btn-outline {
    background-color: transparent;
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--color-white);
}

.btn-outline:hover {
    border-color: var(--color-white);
    background-color: var(--color-white);
    color: var(--color-black);
}

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

.btn-outline-dark:hover {
    background-color: var(--color-black);
    color: var(--color-white);
}

.btn-text {
    color: var(--accent);
    font-weight: 600;
    padding: 0;
}

.btn-text:hover {
    text-decoration: underline;
}

.btn-block {
    width: 100%;
}

.cta-group {
    display: flex;
    gap: 15px;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.divider {
    width: 60px;
    height: 4px;
    background-color: var(--accent);
    margin: 0 auto 20px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

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

.service-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.card-icon {
    width: 60px;
    height: 60px;
    background-color: var(--color-silver-light);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.card-icon svg {
    width: 30px;
    height: 30px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.service-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* Blog Section */
.blog-container {
    max-width: 1000px;
    margin: 0 auto;
}

.blog-frame-wrapper {
    position: relative;
    width: 100%;
    height: 600px;
    background: var(--color-white);
    border: 1px solid var(--color-silver);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-bottom: 20px;
}

.blog-loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #f9fafb;
    z-index: 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #e5e7eb;
    border-top: 4px solid var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 10px;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.blog-frame {
    position: relative;
    width: 100%;
    height: 100%;
    border: none;
    z-index: 1;
}

.blog-fallback {
    text-align: center;
    padding: 20px;
    background: var(--color-white);
    border-radius: var(--radius);
    border: 1px solid var(--color-silver);
}

.blog-fallback p {
    margin-bottom: 10px;
    color: var(--text-muted);
}

/* About Section */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.divider-left {
    width: 60px;
    height: 4px;
    background-color: var(--accent);
    margin-bottom: 20px;
}

.lead {
    font-size: 1.2rem;
    color: var(--primary);
    font-weight: 500;
}

.visual-box {
    width: 100%;
    height: 400px;
    background-color: var(--color-silver-light);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
}

/* Contact Section */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    background: #262626;
    padding: 60px;
    border-radius: var(--radius);
}

.contact-info h2 {
    color: var(--color-white);
}

.contact-info p {
    color: #9ca3af;
}

.contact-items {
    margin-top: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    color: #d1d5db;
}

.contact-item .icon {
    font-size: 1.2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #d1d5db;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    background: #404040;
    border: 1px solid #525252;
    border-radius: var(--radius);
    color: var(--color-white);
    font-family: inherit;
}

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

/* Footer */
.main-footer {
    background-color: #000;
    color: #9ca3af;
    padding: 40px 0;
    border-top: 1px solid #333;
}

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

.logo-footer {
    color: var(--color-white);
    font-weight: 700;
    font-size: 1.2rem;
    display: block;
    margin-bottom: 5px;
}

.footer-nav {
    display: flex;
    gap: 20px;
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        cursor: pointer;
    }

    .bar {
        display: block;
        width: 25px;
        height: 3px;
        background-color: var(--primary);
        margin: 5px 0;
    }

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

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

    .contact-layout {
        padding: 30px;
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--color-white);
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--color-silver);
    }
}

/* About Page Styles */
.page-header {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: 120px 0 60px;
    text-align: center;
    margin-top: var(--header-height);
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 15px;
    background: linear-gradient(to right, #fff, #9ca3af);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-header p {
    font-size: 1.2rem;
    color: #d1d5db;
    max-width: 700px;
    margin: 0 auto;
}

.team-section {
    padding: 80px 0;
    background-color: var(--color-silver-light);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.team-member {
    text-align: center;
    background: var(--color-white);
    padding: 40px 30px;
    border: 1px solid var(--color-silver);
    border-radius: var(--radius);
    transition: var(--transition);
}

.team-member:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.member-avatar {
    width: 100px;
    height: 100px;
    background-color: var(--color-silver-light);
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--text-muted);
    border: 2px solid var(--color-white);
    box-shadow: var(--shadow-sm);
}

.member-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 5px;
}

.member-role {
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 15px;
}