/* ================================================================
   CSS VARIABLES & ROOT
   ================================================================ */
:root {
    --color-primary: #ef3aff;
    --color-primary-light: #7c51ff;
    --color-bg-dark: #0f1729;
    --color-bg-darker: #000000;
    --color-bg-card: #2a2a2a;
    --color-text-white: #ffffff;
    --color-text-muted: #888888;
    --color-text-light-gray: #b8b8b8;
    --color-border-primary: rgba(124, 58, 237, 0.5);
    --color-border-light: rgba(255, 255, 255, 0.2);
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    --spacing-xl: 40px;
    --spacing-2xl: 60px;
    --spacing-3xl: 80px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
    --wave-amplitude: 8px;
    --wave-stagger: 0.08s;
}

/* ================================================================
   FONT FACES
   ================================================================ */
@font-face {
    font-family: 'Kanit';
    src: url('Kanit/Kanit-Light.ttf') format('truetype');
    font-weight: 300;
}

@font-face {
    font-family: 'Kanit';
    src: url('Kanit/Kanit-Regular.ttf') format('truetype');
    font-weight: 400;
}

@font-face {
    font-family: 'Kanit';
    src: url('Kanit/Kanit-Medium.ttf') format('truetype');
    font-weight: 500;
}

@font-face {
    font-family: 'Kanit';
    src: url('Kanit/Kanit-SemiBold.ttf') format('truetype');
    font-weight: 600;
}

@font-face {
    font-family: 'Kanit';
    src: url('Kanit/Kanit-Bold.ttf') format('truetype');
    font-weight: 700;
}

@font-face {
    font-family: 'RBNo3.1';
    src: url('RBNo3.1/RBNo3.1-Bold.ttf') format('truetype');
    font-weight: 700;
}

/* ================================================================
   GLOBAL STYLES
   ================================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Kanit', sans-serif;
    line-height: 1.6;
    color: var(--color-text-white);
    font-size: 18px;
    font-weight: 300;
    background: var(--color-bg-dark);
}

section, footer {
    width: 100%;
    padding-left: 0;
    padding-right: 0;
    margin-left: auto;
    margin-right: auto;
}

/* ================================================================
   TYPOGRAPHY
   ================================================================ */
h2 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-white);
    text-transform: uppercase;
}

.h2-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

h1.lang-en, h2.lang-en, h3.lang-en {
    font-family: 'RBNo3.1', sans-serif;
}

h1.lang-th, h2.lang-th, h3.lang-th {
    font-family: 'Kanit', sans-serif;
}

/* ================================================================
   ANIMATIONS
   ================================================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulseGlow {
    0%, 100% {
        filter: drop-shadow(0 0 8px rgba(0, 221, 255, 0.6))
        drop-shadow(0 0 16px rgba(20, 39, 255, 0.3));
    }
    50% {
        filter: drop-shadow(0 0 16px rgba(162, 0, 255, 0.8))
        drop-shadow(0 0 24px rgba(111, 0, 255, 0.4));
    }
}

@keyframes wave {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(calc(-1 * var(--wave-amplitude)));
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

.fade-in-left {
    animation: fadeInLeft 0.8s ease-out forwards;
}

.fade-in-right {
    animation: fadeInRight 0.8s ease-out forwards;
}

.wave-char {
    display: inline-block;
    animation: wave 2s ease-in-out infinite;
    white-space: pre-wrap;
}

/* ================================================================
   HEADER & NAVIGATION
   ================================================================ */
header {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px var(--spacing-2xl);
    background: rgba(15, 23, 41, 0);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0);
    z-index: 1000;
    transition: var(--transition);
}

header.scrolled {
    background: rgba(82, 100, 255, 0.7);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    padding: 12px var(--spacing-2xl);
}

.logo {
    display: flex;
    height: 60px;
    aspect-ratio: auto;
    transition: width var(--transition);
}

header.scrolled .logo {
    height: 40px;
}

.logo img {
    flex: 1;
}

.nav-wrapper {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
    transition: var(--transition);
    flex: 1;
}

nav {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
    transition: var(--transition);
    flex: 1;
    justify-content: center;
}

nav a {
    text-decoration: none;
    color: var(--color-text-white);
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition);
}

nav a:hover {
    color: var(--color-primary);
}

/* Language Switcher */
.lang-switcher {
    position: relative;
    display: flex;
    align-items: center;
    margin-left: auto;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(0, 0, 0, 0.15);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    color: var(--color-text-white);
    font-family: 'Kanit', sans-serif;
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: var(--transition);
}

.lang-toggle:hover {
    background-color: rgba(0, 0, 0, 0.25);
}

.lang-toggle:focus {
    outline: none;
    background-color: rgba(0, 0, 0, 0.3);
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.1);
}

.lang-toggle svg {
    color: var(--color-primary);
    transition: transform var(--transition);
}

.lang-switcher.open .lang-toggle svg {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
    z-index: 1001;
    min-width: 120px;
}

.lang-switcher.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--color-text-white);
    font-family: 'Kanit', sans-serif;
    font-size: 14px;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

.lang-option:hover {
    background: rgba(168, 85, 247, 0.2);
    color: white;
}

.lang-option.active {
    background: rgba(168, 85, 247, 0.3);
    color: white;
}

/* Hamburger Menu */
.hamburger-menu {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 6px;
    margin-left: auto;
}

.hamburger-menu span {
    width: 25px;
    height: 2px;
    background: var(--color-text-light-gray);
    transition: var(--transition);
    border-radius: var(--radius-sm);
    transform-origin: center;
}

.hamburger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translateY(11px);
}

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

.hamburger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-11px);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(15, 23, 41, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-2xl);
    border-top: 1px solid rgba(255, 149, 0, 0.2);
}

.mobile-nav.active {
    display: flex;
}

.mobile-nav a {
    text-decoration: none;
    color: var(--color-text-white);
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: color var(--transition);
}

.mobile-nav a:hover {
    color: var(--color-primary);
}

/* ================================================================
   HERO SECTION
   ================================================================ */
.hero {
    position: relative;
    height: 90vh;
    padding: 120px var(--spacing-2xl);
    background-image: url('assets/hero/Screenshot 2026-07-13 161359.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-container {
    display: flex;
    gap: var(--spacing-2xl);
    width: 100%;
    max-width: 1400px;
    align-items: stretch;
    height: 100%;
}

.hero-left {
    flex: 1;
    display: flex;
    align-items: stretch;
    height: 100%;
}

.hero-right {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding-left: var(--spacing-xl);
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-text-white);
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.hero-right h1 {
    line-height: 1.3;
}

.hero-tagline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
    z-index: 100;
}

.tagline-main {
    font-size: 72px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-white);
    will-change: filter;
    contain: paint;
}

.tagline-main.fade-in-left {
    animation: fadeInLeft 0.8s ease-out forwards, pulseGlow 3s ease-in-out infinite;
}

.tagline-desktop {
    display: inline;
}

.tagline-mobile {
    display: none;
}

.tagline-sub {
    font-size: 24px;
    font-weight: 300;
    text-transform: none;
    letter-spacing: 0;
    color: var(--color-text-white);
    text-shadow: 2px 2px 2px rgba(0, 0, 0, 0.8);
}

.hero-left p {
    font-size: 18px;
    font-weight: 300;
    color: var(--color-text-white);
    line-height: 1.8;
}

.hero-splash-placeholder {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
    object-fit: cover;
}

/* ================================================================
   ABOUT US SECTION
   ================================================================ */
.about-us {
    padding: var(--spacing-3xl) var(--spacing-2xl);
    background-color: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-us-container {
    display: flex;
    gap: var(--spacing-2xl);
    width: 100%;
    max-width: 1400px;
    align-items: center;
}

.about-us-left {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.about-us-left h2 {
    color: var(--color-text-white);
    text-align: left;
}

.about-us-left p {
    font-size: 18px;
    font-weight: 300;
    color: var(--color-text-white);
    line-height: 1.8;
    max-width: 600px;
}

.about-us-right {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-us-pic {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: url('assets/about-us/Screenshot 2026-07-13 173659.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: var(--radius-lg);
}

/* ================================================================
   HIGHLIGHT SECTIONS
   ================================================================ */
.highlight {
    padding: 120px var(--spacing-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.highlight-combined {
    background-image: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.8)),
                    url('assets/highlights/Screenshot 2026-07-14 095719.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.highlight-combined-container {
    display: flex;
    flex-direction: column;
    gap: 120px;
    width: 100%;
    max-width: 1400px;
}

.highlight-item {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-xl);
    align-items: center;
}

.highlight-item:nth-child(2) {
    flex-direction: row-reverse;
}

.highlight-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 600px;
}

.highlight-text h2 {
    text-align: left;
}

.highlight-text p {
    font-size: 18px;
    font-weight: 300;
    color: var(--color-text-white);
    line-height: 1.8;
}

.highlight-desc-desktop {
    display: block;
}

.highlight-desc-mobile {
    display: none;
}

.highlight-pic {
    min-height: 300px;
    aspect-ratio: 2/1;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: var(--radius-lg);
}

/* ================================================================
   SERVICES SECTION
   ================================================================ */
.services {
    padding: var(--spacing-3xl) var(--spacing-2xl);
    background-image: linear-gradient(140deg, #5151ff 30%, #5151ff 100%);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.services h2 {
    text-align: center;
    flex: 1;
    margin-bottom: var(--spacing-md);
}

.services-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.service-card {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition);
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    flex: 1 1 auto;
    min-width: 200px;
    max-width: 300px;
}

.service-card:hover {
    transform: translateY(-5px);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-color: var(--color-border-light);
}

.service-icon {
    width: 108px;
    height: 108px;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: var(--radius-md);
}

.service-card h3 {
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    color: white;
}

.service-card p {
    text-align: center;
}

/* ================================================================
   CONTACT SECTION
   ================================================================ */
.contact-us {
    padding: var(--spacing-3xl) var(--spacing-2xl);
    background-image: linear-gradient(rgb(0, 0, 0, .9) 20%, rgba(0, 0, 0, 0) 100%),
                        url('assets/contact/Screenshot 2026-07-13 175346.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-container {
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-us h2 {
    text-align: center;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-sm) var(--spacing-md);
    background: #1a1a1a;
    border: 2px solid var(--color-border-primary);
    border-radius: var(--radius-md);
    color: var(--color-text-white);
    font-family: 'Kanit', sans-serif;
    font-size: 16px;
    transition: var(--transition);
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    background: #252525;
    border-color: rgba(168, 85, 247, 0.9);
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.1);
}

.submit-btn {
    padding: var(--spacing-sm) var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-white);
    font-family: 'Kanit', sans-serif;
    font-size: 16px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: var(--transition);
    margin-top: var(--spacing-sm);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(168, 85, 247, 0.3);
}

.submit-btn:active {
    transform: translateY(0);
}

/* ================================================================
   FOOTER
   ================================================================ */
footer {
    background: var(--color-bg-card);
    color: var(--color-text-white);
    border-top: 4px solid var(--color-primary);
    display: flex;
    justify-content: center;
    padding: var(--spacing-3xl) var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    width: 100%;
    max-width: 80vw;
}

footer h3 {
    font-size: 24px;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    color: var(--color-primary);
    letter-spacing: 0.5px;
}

footer p, footer a {
    font-size: 16px;
    color: var(--color-text-white);
}

footer a:hover {
    color: var(--color-primary);
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    align-items: flex-start;
}

.footer-nav a {
    text-decoration: none;
    color: var(--color-text-white);
    font-size: 16px;
    font-weight: 300;
    transition: color var(--transition);
}

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

.footer-logo {
    display: inline-flex;
    width: 100px;
    aspect-ratio: auto;
    transition: opacity var(--transition);
}

.footer-logo:hover {
    opacity: 0.8;
}


/* ================================================================
   RESPONSIVE BREAKPOINTS
   ================================================================ */
@media (max-width: 1280px) {
    .about-us-container {
        gap: var(--spacing-xl);
    }

    .highlight {
        padding: var(--spacing-3xl) var(--spacing-lg);
        min-height: auto;
    }

    .highlight-pic {
        aspect-ratio: 4/3;
    }
}

@media (max-width: 1024px) {
    .tagline-desktop {
        display: none;
    }

    .tagline-mobile {
        display: inline;
    }

    header {
        padding: 15px var(--spacing-xl);
    }

    header.scrolled {
        padding: 10px var(--spacing-xl);
    }

    .hero {
        padding: 60px;
        height: 80vh;
    }

    .hero-container {
        gap: var(--spacing-xl);
    }

    .hero h1 {
        font-size: 40px;
    }

    .tagline-main {
        font-size: 48px;
    }

    .highlight-item {
        flex-direction: column;
    }

    .highlight-item:nth-child(2) {
        flex-direction: column;
    }

    .highlight-pic {
        width: 100%;
        aspect-ratio: 2/1;
    }

    .highlight-text {
        max-width: none;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        max-width: calc(100vw - 80px);
    }
}

@media (max-width: 768px) {
    header {
        padding: 15px var(--spacing-lg);
    }

    header.scrolled {
        padding: 10px var(--spacing-lg);
    }

    .logo {
        display: none;
    }

    .nav-wrapper {
        gap: var(--spacing-xs);
        order: 2;
    }

    nav {
        display: none;
    }

    .lang-switcher {
        order: -1;
        margin-left: 0;
        margin-right: auto;
    }

    .lang-toggle {
        font-size: 10px;
        padding: 6px 8px;
    }

    .lang-dropdown {
        right: auto;
        left: 0;
    }

    .hamburger-menu {
        display: flex;
        order: 3;
    }

    .mobile-nav {
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .hero {
        padding: 20px var(--spacing-lg);
    }

    .hero-container {
        flex-direction: column;
        gap: var(--spacing-xl);
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero-right {
        width: 100%;
        min-height: 300px;
        padding-left: 0;
    }

    .about-us {
        padding: var(--spacing-3xl) var(--spacing-lg);
        min-height: auto;
    }

    .about-us-container {
        flex-direction: column-reverse;
        gap: var(--spacing-xl);
    }

    .about-us-left h2,
    .about-us-left p {
        text-align: center;
    }

    .about-us-right {
        width: 100%;
        min-height: 300px;
    }

    .highlight-desc-desktop {
        display: none;
    }

    .highlight-desc-mobile {
        display: block;
    }

    .services {
        padding: var(--spacing-3xl) var(--spacing-lg);
    }

    .contact-us {
        padding: var(--spacing-3xl) var(--spacing-lg);
        min-height: auto;
    }

    .contact-container {
        max-width: none;
    }

    .footer-content {
        grid-template-columns: 1fr;
        max-width: calc(100vw - 60px);
    }

    footer h3 {
        margin-bottom: 0;
    }
}