/* ============================================
   NAMICH HOSTING - PREMIUM DESIGN SYSTEM
   ============================================ */

/* === IMPORTS === */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Thai:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

/* === CSS VARIABLES === */
:root {
    /* Color Palette */
    --color-primary: #8B5CF6;
    --color-primary-dark: #7C3AED;
    --color-primary-light: #A78BFA;
    --color-secondary: #3B82F6;
    --color-secondary-dark: #2563EB;
    --color-accent: #EC4899;
    --color-accent-light: #F472B6;
    --color-success: #10B981;
    --color-warning: #F59E0B;

    /* Dark Theme Colors */
    --color-bg-primary: #0F0F1E;
    --color-bg-secondary: #1A1A2E;
    --color-bg-tertiary: #252538;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #C4C4D8;
    --color-text-muted: #8B8B9E;

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-card: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(59, 130, 246, 0.1) 100%);
    --gradient-button: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-accent: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);

    /* Spacing Scale (8px base) */
    --space-1: 0.5rem;
    /* 8px */
    --space-2: 1rem;
    /* 16px */
    --space-3: 1.5rem;
    /* 24px */
    --space-4: 2rem;
    /* 32px */
    --space-5: 2.5rem;
    /* 40px */
    --space-6: 3rem;
    /* 48px */
    --space-8: 4rem;
    /* 64px */
    --space-10: 5rem;
    /* 80px */
    --space-12: 6rem;
    /* 96px */

    /* Typography Scale */
    --text-xs: 0.875rem;
    --text-sm: 1rem;
    --text-base: 1.125rem;
    --text-lg: 1.25rem;
    --text-xl: 1.5rem;
    --text-2xl: 2rem;
    --text-3xl: 2.5rem;
    --text-4xl: 3.5rem;

    /* Line Heights */
    --leading-tight: 1.2;
    --leading-normal: 1.5;
    --leading-relaxed: 1.75;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(139, 92, 246, 0.1);
    --shadow-md: 0 4px 16px rgba(139, 92, 246, 0.15);
    --shadow-lg: 0 8px 32px rgba(139, 92, 246, 0.2);
    --shadow-xl: 0 16px 64px rgba(139, 92, 246, 0.25);
    --shadow-glow: 0 0 32px rgba(139, 92, 246, 0.3);

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Glassmorphism */
    --glass-bg: rgba(26, 26, 46, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: blur(16px);
}

/* === GLOBAL RESET === */
*,
*::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: 'Noto Sans Thai', 'Inter', sans-serif;
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    background-image: radial-gradient(circle at 20% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    overflow-x: hidden;
}

/* === TYPOGRAPHY === */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: var(--leading-tight);
    margin-bottom: var(--space-3);
}

h1 {
    font-size: clamp(2rem, 5vw, var(--text-4xl));
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent-light));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: clamp(1.75rem, 4vw, var(--text-3xl));
    color: var(--color-text-primary);
}

h3 {
    font-size: var(--text-2xl);
    color: var(--color-text-primary);
}

p {
    margin-bottom: var(--space-2);
    color: var(--color-text-secondary);
}

.text-gradient {
    background: var(--gradient-button);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* === CONTAINER & LAYOUT === */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-3);
}

.section {
    padding: var(--space-10) 0;
}

.section-sm {
    padding: var(--space-6) 0;
}

/* === GLASSMORPHISM UTILITIES === */
.glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    transition: all var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(139, 92, 246, 0.3);
}

.glass-border {
    position: relative;
    border-radius: var(--radius-lg);
}

.glass-border::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 2px;
    background: var(--gradient-button);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.5;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-base);
    white-space: nowrap;
    font-family: 'Noto Sans Thai', 'Inter', sans-serif;
}

.btn-primary {
    background: var(--gradient-button);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

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

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    background: rgba(139, 92, 246, 0.1);
}

.btn-accent {
    background: var(--gradient-accent);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-sm);
}

.btn-lg {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-lg);
}

/* === CARDS === */
.card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    transition: all var(--transition-base);
}

.card-gradient {
    position: relative;
    background: var(--gradient-card);
    overflow: hidden;
}

.card-gradient::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-button);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card-gradient:hover::before {
    opacity: 0.05;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(139, 92, 246, 0.4);
}

/* === BADGES === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background: var(--gradient-button);
    color: white;
}

.badge-accent {
    background: var(--gradient-accent);
    color: white;
}

.badge-success {
    background: var(--color-success);
    color: white;
}

/* === GRID SYSTEM === */
.grid {
    display: grid;
    gap: var(--space-4);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

@media (max-width: 768px) {

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }

    100% {
        background-position: 1000px 0;
    }
}

.animate-fade-in-up {
    animation: fadeInUp var(--transition-slow) ease-out;
}

.animate-fade-in {
    animation: fadeIn var(--transition-base) ease-out;
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

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

/* === NAVIGATION === */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all var(--transition-base);
}

.nav.scrolled {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--glass-border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-3);
}

.nav-logo {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    list-style: none;
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary-light);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-button);
    transition: width var(--transition-base);
}

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

/* Mobile menu */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--space-1);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-fast);
}

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

    .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--glass-bg);
        backdrop-filter: var(--glass-blur);
        border-bottom: 1px solid var(--glass-border);
        padding: var(--space-4);
        gap: var(--space-3);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-base);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
}

/* === HERO SECTION === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: var(--space-8);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: var(--gradient-hero);
    opacity: 0.1;
    z-index: -1;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    z-index: 1;
}

.hero-title {
    margin-bottom: var(--space-4);
    font-size: clamp(2rem, 6vw, 4rem);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.5rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
    line-height: var(--leading-relaxed);
}

.hero-cta {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-features {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-6);
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.hero-feature svg {
    color: var(--color-success);
}

/* === PACKAGE CARDS === */
.package-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.tab-btn {
    padding: var(--space-2) var(--space-4);
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: 'Noto Sans Thai', 'Inter', sans-serif;
    font-size: var(--text-base);
}

.tab-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-light);
}

.tab-btn.active {
    background: var(--gradient-button);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-md);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn var(--transition-base);
}

.package-card {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    transition: all var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.package-card.featured {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.package-card.featured::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--gradient-button);
    border-radius: inherit;
    z-index: -1;
    opacity: 0.5;
}

.package-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    border-color: rgba(139, 92, 246, 0.5);
}

.package-badge {
    position: absolute;
    top: -12px;
    right: var(--space-4);
    background: var(--gradient-accent);
    color: white;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    box-shadow: var(--shadow-md);
}

.package-name {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-2);
    color: var(--color-text-primary);
}

.package-price {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-bottom: var(--space-1);
    font-family: 'Inter', sans-serif;
}

.package-price .currency {
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
}

.package-period {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
}

.package-features {
    list-style: none;
    margin-bottom: var(--space-4);
    flex-grow: 1;
}

.package-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.package-features li::before {
    content: '✓';
    color: var(--color-success);
    font-weight: 700;
    flex-shrink: 0;
}

/* === COMPARISON TABLE === */
.table-container {
    overflow-x: auto;
    margin: var(--space-6) 0;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.comparison-table th,
.comparison-table td {
    padding: var(--space-3);
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

.comparison-table th {
    background: rgba(139, 92, 246, 0.1);
    color: var(--color-text-primary);
    font-weight: 700;
    position: sticky;
    top: 0;
    z-index: 10;
}

.comparison-table td {
    color: var(--color-text-secondary);
}

.comparison-table .highlight {
    background: rgba(139, 92, 246, 0.05);
}

/* === FOOTER === */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--glass-border);
    padding: var(--space-8) 0 var(--space-4);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.footer-section h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-3);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--space-4);
    border-top: 1px solid var(--glass-border);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

/* === FORM STYLES === */
.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    margin-bottom: var(--space-1);
    color: var(--color-text-primary);
    font-weight: 600;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: 'Noto Sans Thai', 'Inter', sans-serif;
    font-size: var(--text-base);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

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

/* === UTILITY CLASSES === */
.text-center {
    text-align: center;
}

.mt-2 {
    margin-top: var(--space-2);
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-6 {
    margin-top: var(--space-6);
}

.mb-2 {
    margin-bottom: var(--space-2);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-6 {
    margin-bottom: var(--space-6);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    :root {
        --text-4xl: 2.5rem;
        --text-3xl: 2rem;
        --text-2xl: 1.5rem;
    }

    .section {
        padding: var(--space-6) 0;
    }

    .hero {
        min-height: auto;
        padding: var(--space-10) 0;
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
    }
}

/* === SCROLL TO TOP BUTTON === */
.scroll-to-top {
    position: fixed;
    bottom: var(--space-4);
    right: var(--space-4);
    width: 48px;
    height: 48px;
    background: var(--gradient-button);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

.scroll-to-top.visible {
    opacity: 1;
    pointer-events: all;
}

.scroll-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* === LOADING SPINNER === */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(139, 92, 246, 0.2);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}