/**
 * Eclectix7 Main Stylesheet
 * Unified design system: glass surfaces, data-theme light/dark, no purple palette
 */

/* ----- Design tokens: light ----- */
:root,
html[data-theme='light'] {
    color-scheme: light;

    --color-primary: #0d9488;
    --color-primary-dark: #0f766e;
    --color-primary-light: #14b8a6;
    --color-secondary: #ea580c;
    --color-accent: #f59e0b;
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;

    --color-text: #0f172a;
    --color-text-light: #475569;
    --color-text-lighter: #64748b;
    --color-bg: #f8fafc;
    --color-bg-elevated: #ffffff;
    --color-bg-light: #f1f5f9;
    --color-bg-dark: #0f172a;
    --color-border: rgba(15, 23, 42, 0.1);
    --color-border-dark: rgba(15, 23, 42, 0.18);

    --surface-glass-bg: rgba(255, 255, 255, 0.55);
    --surface-glass-border: rgba(15, 23, 42, 0.1);
    --surface-glass-shadow: 0 8px 32px rgba(15, 23, 42, 0.08);
    --nav-glass-bg: rgba(255, 255, 255, 0.45);
    --nav-glass-border: rgba(255, 255, 255, 0.35);
    --hero-text: #0f172a;
    --hero-subtext: rgba(15, 23, 42, 0.75);
    --footer-bg: #0f172a;
    --footer-text: rgba(255, 255, 255, 0.82);
    --footer-muted: rgba(255, 255, 255, 0.55);

    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -2px rgba(15, 23, 42, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 10px 10px -5px rgba(15, 23, 42, 0.04);

    --aurora-base: #f1f5f9;
    --aurora-white: #ffffff;
    --aurora-black: #000000;
    --aurora-transparent: transparent;
    --aurora-a: #14b8a6;
    --aurora-b: #2dd4bf;
    --aurora-c: #38bdf8;
    --aurora-d: #fbbf24;
    --aurora-e: #f97316;
}

/* ----- Design tokens: dark ----- */
html[data-theme='dark'] {
    color-scheme: dark;

    --color-primary: #2dd4bf;
    --color-primary-dark: #14b8a6;
    --color-primary-light: #5eead4;
    --color-secondary: #fb923c;
    --color-accent: #fbbf24;

    --color-text: #f4f4f5;
    --color-text-light: #a1a1aa;
    --color-text-lighter: #71717a;
    --color-bg: #18181b;
    --color-bg-elevated: #27272a;
    --color-bg-light: #3f3f46;
    --color-bg-dark: #09090b;
    --color-border: rgba(255, 255, 255, 0.1);
    --color-border-dark: rgba(255, 255, 255, 0.16);

    --surface-glass-bg: rgba(39, 39, 42, 0.45);
    --surface-glass-border: rgba(255, 255, 255, 0.12);
    --surface-glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    --nav-glass-bg: rgba(24, 24, 27, 0.55);
    --nav-glass-border: rgba(255, 255, 255, 0.14);
    --hero-text: #fafafa;
    --hero-subtext: rgba(250, 250, 250, 0.85);
    --footer-bg: #09090b;
    --footer-text: rgba(255, 255, 255, 0.82);
    --footer-muted: rgba(255, 255, 255, 0.5);

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.35);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4);

    --aurora-base: #18181b;
}

/* Shared structural tokens */
:root {
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    --container-max-width: 1200px;
    --border-radius: 0.5rem;
    --border-radius-sm: 0.25rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1.25rem;
    --border-radius-pill: 9999px;
    --border-radius-glass: 1.5rem;

    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    --blur-glass: 16px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: transparent;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

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

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

ul, ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-xl);
}

li {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ----- Glass surface utility ----- */
.surface-glass {
    background: var(--surface-glass-bg);
    backdrop-filter: blur(var(--blur-glass));
    -webkit-backdrop-filter: blur(var(--blur-glass));
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--border-radius-glass);
    box-shadow: var(--surface-glass-shadow);
}

/* Header: floating pill nav */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    background: transparent;
    border: none;
    box-shadow: none;
}

.site-header .container {
    max-width: min(1120px, 100%);
}

.navbar-shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) var(--spacing-lg);
    background: var(--nav-glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--nav-glass-border);
    border-radius: var(--border-radius-pill);
    box-shadow: var(--shadow-md);
    position: relative;
}

.navbar-brand .logo {
    display: inline-block;
    line-height: 0;
}

.navbar-brand .logo-img {
    height: 40px;
    width: auto;
    display: block;
}

/* Swap logo image based on theme */
html[data-theme='light'] .logo-img--dark,
html[data-theme='dark'] .logo-img--light {
    display: none;
}

/* Accessible utility */
.visually-hidden {
    position: absolute !important;
    height: 1px;
    width: 1px;
    overflow: hidden;
    clip: rect(1px, 1px, 1px, 1px);
    white-space: nowrap;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--border-radius-pill);
    background: var(--surface-glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--color-text);
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--color-bg-light);
    transform: scale(1.04);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.theme-toggle .icon-dark,
.theme-toggle .icon-light {
    width: 22px;
    height: 22px;
}

/* Light mode: show moon (switch to dark). Dark mode: show sun (switch to light). */
html[data-theme='light'] .theme-toggle .icon-light {
    display: none;
}

html[data-theme='dark'] .theme-toggle .icon-dark {
    display: none;
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    padding: 0;
    margin: 0;
    align-items: center;
    flex: 1;
    justify-content: center;
}

.navbar-menu a {
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm) 0;
    position: relative;
    font-size: var(--font-size-sm);
}

.navbar-menu a:hover,
.navbar-menu a.active {
    color: var(--color-primary);
}

.navbar-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-primary);
    border-radius: 1px;
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.navbar-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: var(--transition-base);
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 200px);
}

.featured-projects {
    padding: var(--spacing-3xl) 0;
}

.projects-section {
    padding: 0 0 var(--spacing-3xl);
}

.contact-content {
    padding: 0 0 var(--spacing-3xl);
}

.project-detail {
    padding: 0 0 var(--spacing-3xl);
}

/* Hero: aurora visible + glass panel */
.hero {
    background: transparent;
    color: var(--hero-text);
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.hero-panel {
    max-width: 820px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-xl);
    background: var(--surface-glass-bg);
    backdrop-filter: blur(var(--blur-glass));
    -webkit-backdrop-filter: blur(var(--blur-glass));
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--border-radius-glass);
    box-shadow: var(--surface-glass-shadow);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-lg);
    color: var(--hero-text);
    letter-spacing: 0.02em;
    text-transform: none;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-2xl);
    color: var(--hero-subtext);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero .btn-primary {
    border-radius: var(--border-radius-pill);
}

.hero .btn-secondary {
    border-radius: var(--border-radius-pill);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-align: center;
    border-radius: var(--border-radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

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

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

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--hero-text);
    border: 2px solid var(--surface-glass-border);
}

.hero .btn-secondary {
    color: var(--hero-text);
    border-color: rgba(255, 255, 255, 0.35);
}

html[data-theme='light'] .hero .btn-secondary {
    background-color: rgba(15, 23, 42, 0.06);
    border-color: rgba(15, 23, 42, 0.15);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    border-radius: var(--border-radius-lg);
}

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

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

/* Sections */
.section-title {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-footer {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

/* Project Cards */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.project-card {
    background: var(--surface-glass-bg);
    backdrop-filter: blur(var(--blur-glass));
    -webkit-backdrop-filter: blur(var(--blur-glass));
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--border-radius-glass);
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--surface-glass-shadow);
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.project-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background-color: var(--color-bg-light);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.project-content {
    padding: var(--spacing-lg);
    background: var(--color-bg-elevated);
}

html[data-theme='dark'] .project-content {
    background: rgba(24, 24, 27, 0.85);
}

.project-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.project-description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.project-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-bg-light);
    border-radius: var(--border-radius-pill);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tech-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--border-radius-pill);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

.project-actions {
    margin-top: var(--spacing-md);
}

.no-projects {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-light);
}

/* Page Header */
.page-header {
    background: transparent;
    padding: var(--spacing-2xl) 0;
    text-align: center;
    border-bottom: none;
}

.page-header-panel {
    display: inline-block;
    max-width: 720px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-2xl);
    background: var(--surface-glass-bg);
    backdrop-filter: blur(var(--blur-glass));
    -webkit-backdrop-filter: blur(var(--blur-glass));
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--border-radius-glass);
    box-shadow: var(--surface-glass-shadow);
}

.page-header .container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-header.page-header--left .container {
    align-items: stretch;
}

.page-header.page-header--left .page-header-panel {
    text-align: left;
    max-width: 100%;
    width: 100%;
}

.page-header h1 {
    color: var(--color-text);
}

.page-subtitle {
    color: var(--color-text-light);
    font-size: var(--font-size-lg);
    margin-top: var(--spacing-sm);
}

/* Content Sections */
.content-section {
    margin-bottom: var(--spacing-2xl);
}

.content-section h2 {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
}

.content-section h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.service-card {
    padding: var(--spacing-lg);
    background: var(--surface-glass-bg);
    backdrop-filter: blur(var(--blur-glass));
    -webkit-backdrop-filter: blur(var(--blur-glass));
    border-radius: var(--border-radius-glass);
    border: 1px solid var(--surface-glass-border);
    box-shadow: var(--surface-glass-shadow);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.service-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

/* Tech List */
.tech-list {
    list-style: none;
    padding-left: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-sm);
}

.tech-list li {
    padding: var(--spacing-sm);
    background: var(--surface-glass-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
}

/* Contact Form */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.contact-info h2 {
    margin-bottom: var(--spacing-lg);
}

.contact-details {
    margin-top: var(--spacing-lg);
}

.contact-item {
    margin-bottom: var(--spacing-md);
}

.contact-item strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.contact-form-wrapper {
    background: var(--surface-glass-bg);
    backdrop-filter: blur(var(--blur-glass));
    -webkit-backdrop-filter: blur(var(--blur-glass));
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-glass);
    border: 1px solid var(--surface-glass-border);
    box-shadow: var(--surface-glass-shadow);
}

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

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

.form-group label {
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    background: var(--color-bg-elevated);
    color: var(--color-text);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 22%, transparent);
}

/* Alerts */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
}

.alert-success {
    background-color: color-mix(in srgb, var(--color-success) 12%, transparent);
    border: 1px solid var(--color-success);
    color: var(--color-text);
}

html[data-theme='dark'] .alert-success {
    color: #bbf7d0;
}

.alert-error {
    background-color: color-mix(in srgb, var(--color-error) 12%, transparent);
    border: 1px solid var(--color-error);
    color: var(--color-text);
}

html[data-theme='dark'] .alert-error {
    color: #fecaca;
}

.alert h3 {
    margin-bottom: var(--spacing-sm);
}

/* Legal Content */
.legal-content {
    padding: var(--spacing-2xl) 0;
    max-width: 800px;
    margin: 0 auto;
}

/* Footer */
.site-footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-3xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3,
.footer-section h4 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: var(--footer-muted);
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: var(--footer-text);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--footer-muted);
}

.footer-logo {
    margin-top: var(--spacing-lg);
    display: inline-flex;
    justify-content: center;
    align-items: center;
    background: transparent;
    border: none;
    padding: 0;
    cursor: pointer;
}

.footer-logo:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 6px;
}

.footer-logo-img {
    height: 84px;
    width: auto;
    max-width: min(760px, 100%);
    display: block;
}

.footer-built-with {
    margin-top: var(--spacing-sm);
    margin-bottom: 0;
    color: var(--footer-muted);
}

.footer-built-with a {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
}

.footer-built-with a:hover {
    color: color-mix(in srgb, var(--color-accent) 85%, white);
}

/* Love popup modal */
.love-popup {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.love-popup.is-open {
    display: flex;
}

.love-popup__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
}

.love-popup__dialog {
    position: relative;
    width: min(500px, 92vw);
    border-radius: var(--border-radius-glass);
    border: 2px solid var(--color-accent);
    background: var(--surface-glass-bg);
    backdrop-filter: blur(var(--blur-glass));
    -webkit-backdrop-filter: blur(var(--blur-glass));
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
    z-index: 1;
}

.love-popup__close {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-pill);
    border: 1px solid var(--surface-glass-border);
    background: var(--surface-glass-bg);
    color: var(--color-text);
    cursor: pointer;
}

.love-popup__close:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.love-popup__logo {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.love-popup__logo-img {
    width: min(360px, 100%);
    height: auto;
    display: block;
}

.love-popup__body {
    text-align: left;
}

.love-popup__passage {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-base);
}

.love-popup__caption {
    margin: 0;
    color: var(--color-text-light);
    font-weight: var(--font-weight-semibold);
    text-align: center;
}

body.is-modal-open {
    overflow: hidden;
}

/* About page: full-size logo in title area */
.page-header-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.page-header-logo-img {
    width: min(760px, 100%);
    height: auto;
    display: block;
}

/* About Preview */
.about-preview {
    background: transparent;
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 0 var(--spacing-3xl);
}

/* Projects Filters */
.projects-filters {
    background: var(--surface-glass-bg);
    backdrop-filter: blur(var(--blur-glass));
    -webkit-backdrop-filter: blur(var(--blur-glass));
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-glass);
    margin-bottom: var(--spacing-2xl);
    border: 1px solid var(--surface-glass-border);
    box-shadow: var(--surface-glass-shadow);
}

.filter-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    align-items: end;
}

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

.filter-group label {
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.filter-group input[type="text"],
.filter-group select {
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    background: var(--color-bg-elevated);
    color: var(--color-text);
}

.filter-group input[type="checkbox"] {
    margin-right: var(--spacing-sm);
}

.filter-actions {
    display: flex;
    gap: var(--spacing-md);
}

.results-info {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

/* Project Detail Styles */
.project-detail-content {
    display: grid;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.project-detail-image {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}

.project-detail-image img {
    width: 100%;
    border-radius: var(--border-radius-glass);
    box-shadow: var(--shadow-lg);
}

.project-detail-info {
    max-width: 800px;
    margin: 0 auto;
}

.project-description-full {
    margin-bottom: var(--spacing-2xl);
}

.project-description-full h2 {
    margin-bottom: var(--spacing-lg);
}

.project-tech-stack {
    margin-bottom: var(--spacing-2xl);
}

.tech-stack-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.project-tags {
    margin-bottom: var(--spacing-2xl);
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.tag-link {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--surface-glass-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.tag-link:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.project-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.project-meta-info {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.project-meta-info p {
    margin-bottom: var(--spacing-sm);
}

.back-link {
    display: inline-block;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--color-primary);
}

.featured-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-accent);
    color: #0f172a;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

html[data-theme='dark'] .featured-badge {
    color: #0f172a;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.project-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
}

.related-projects {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 2px solid var(--color-border);
}

.related-projects h2 {
    margin-bottom: var(--spacing-xl);
}

/* AI Discovery (projects page) */
.ai-discovery-section {
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--surface-glass-bg);
    backdrop-filter: blur(var(--blur-glass));
    -webkit-backdrop-filter: blur(var(--blur-glass));
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--border-radius-glass);
    box-shadow: var(--surface-glass-shadow);
}

.discovery-form {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.discovery-form input[type="text"] {
    flex: 1;
    min-width: 200px;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background: var(--color-bg-elevated);
    color: var(--color-text);
    font-family: var(--font-family);
}

.discovery-projects-grid {
    display: grid;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.discovery-project-card {
    padding: var(--spacing-md);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
}

/* ----- Scroll reveal ----- */
.scroll-reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.65s ease-out, transform 0.65s ease-out;
}

.scroll-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .scroll-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ----- AI Chat (moved from inline) ----- */
.ai-chat-section {
    padding: var(--spacing-2xl) 0;
}

.chat-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--surface-glass-bg);
    backdrop-filter: blur(var(--blur-glass));
    -webkit-backdrop-filter: blur(var(--blur-glass));
    border: 1px solid var(--surface-glass-border);
    border-radius: var(--border-radius-glass);
    overflow: hidden;
    box-shadow: var(--surface-glass-shadow);
}

.chat-messages {
    height: 500px;
    overflow-y: auto;
    padding: var(--spacing-lg);
    background: var(--color-bg-light);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.chat-message {
    display: flex;
    max-width: 80%;
    animation: chatFadeIn 0.3s ease-in;
}

@keyframes chatFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    .chat-message {
        animation: none;
    }
}

.chat-message-user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.chat-message-assistant {
    align-self: flex-start;
}

.message-content {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    background-color: var(--color-bg-elevated);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.chat-message-user .message-content {
    background: color-mix(in srgb, var(--color-primary) 15%, var(--color-bg-elevated));
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
    border: 2px solid var(--color-primary);
}

.chat-message-user .message-content p {
    color: var(--color-text);
}

.chat-message-assistant .message-content {
    background-color: var(--color-bg-elevated);
    color: var(--color-text);
}

.chat-input-container {
    padding: var(--spacing-lg);
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
}

.chat-form {
    display: flex;
    gap: var(--spacing-md);
}

.chat-input {
    flex: 1;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
}

.chat-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 22%, transparent);
}

.chat-send-btn {
    white-space: nowrap;
}

.chat-status {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    min-height: 20px;
}

.chat-status-info {
    color: var(--color-text-light);
}

.chat-status-error {
    color: var(--color-error);
}

.chat-status-success {
    color: var(--color-success);
}

.chat-info {
    max-width: 800px;
    margin: var(--spacing-2xl) auto 0;
    padding: var(--spacing-lg);
    background: var(--surface-glass-bg);
    backdrop-filter: blur(var(--blur-glass));
    -webkit-backdrop-filter: blur(var(--blur-glass));
    border-radius: var(--border-radius-glass);
    border: 1px solid var(--surface-glass-border);
    box-shadow: var(--surface-glass-shadow);
}

.chat-info h3 {
    margin-bottom: var(--spacing-md);
}

.chat-info p {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.chat-info small {
    color: var(--color-text-light);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-shell {
        flex-wrap: nowrap;
        border-radius: var(--border-radius-xl);
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .navbar-menu {
        display: none;
        position: absolute;
        top: calc(100% + var(--spacing-sm));
        left: 0;
        right: 0;
        flex: none;
        justify-content: stretch;
        background: var(--nav-glass-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        border: 1px solid var(--nav-glass-border);
        border-radius: var(--border-radius-xl);
        align-items: stretch;
        gap: 0;
        z-index: 100;
    }

    .navbar-menu li {
        width: 100%;
    }

    .navbar-menu a {
        display: block;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
    }

    .navbar-menu li:last-child a {
        border-bottom: none;
    }

    .navbar-menu.active {
        display: flex;
    }

    .navbar-toggle {
        display: flex;
    }

    .header-actions {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-lg);
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .filter-form {
        grid-template-columns: 1fr;
    }

    .filter-actions {
        flex-direction: column;
    }

    .project-links {
        flex-direction: column;
    }

    .project-header {
        flex-direction: column;
    }

    .page-header-panel {
        padding: var(--spacing-lg);
    }
}

/* ============================================
   Aurora Background Effect (data-theme synced)
   ============================================ */

.aurora-background {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
    background-color: var(--aurora-base);
}

.aurora-effect {
    position: absolute;
    inset: -10px;
    opacity: 0.5;
    will-change: transform;
    pointer-events: none;

    --white-gradient: repeating-linear-gradient(
        100deg,
        var(--aurora-white) 0%,
        var(--aurora-white) 7%,
        var(--aurora-transparent) 10%,
        var(--aurora-transparent) 12%,
        var(--aurora-white) 16%
    );

    --dark-gradient: repeating-linear-gradient(
        100deg,
        var(--aurora-black) 0%,
        var(--aurora-black) 7%,
        var(--aurora-transparent) 10%,
        var(--aurora-transparent) 12%,
        var(--aurora-black) 16%
    );

    --aurora-gradient: repeating-linear-gradient(
        100deg,
        var(--aurora-a) 10%,
        var(--aurora-b) 15%,
        var(--aurora-c) 20%,
        var(--aurora-d) 25%,
        var(--aurora-e) 30%
    );

    background-image: var(--white-gradient), var(--aurora-gradient);
    background-size: 300%, 200%;
    background-position: 50% 50%, 50% 50%;
    filter: blur(10px) invert(1);
    -webkit-mask-image: radial-gradient(ellipse at 100% 0%, black 10%, transparent 70%);
    mask-image: radial-gradient(ellipse at 100% 0%, black 10%, transparent 70%);
}

html[data-theme='dark'] .aurora-effect {
    background-image: var(--dark-gradient), var(--aurora-gradient);
    filter: blur(10px) invert(0);
}

.aurora-effect::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: var(--white-gradient), var(--aurora-gradient);
    background-size: 200%, 100%;
    background-attachment: fixed;
    mix-blend-mode: difference;
    animation: aurora-animation 60s linear infinite;
}

html[data-theme='dark'] .aurora-effect::after {
    background-image: var(--dark-gradient), var(--aurora-gradient);
}

@keyframes aurora-animation {
    from {
        background-position: 50% 50%, 50% 50%;
    }
    to {
        background-position: 350% 50%, 350% 50%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .aurora-effect::after {
        animation: none;
    }
}