/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */

:root {
    /* Color Palette - Dark Mode (Default) */
    --bg-primary: #03140e;
    --bg-secondary: #062019;
    --bg-navbar: rgba(3, 20, 14, 0.75);
    --bg-card: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: #a7c4b9;
    --text-muted: #6b8f83;
    --accent-glow: rgba(16, 185, 129, 0.15);
    
    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #047857 0%, #059669 50%, #10b981 100%);
    --gradient-text: linear-gradient(90deg, #34d399, #6ee7b7, #ffffff);
    
    /* Layout */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.4);
    
    /* Card Glows */
    --card-glow: rgba(52, 211, 153, 0.18);
}

[data-theme="light"] {
    /* Color Palette - Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #ffffff;
    --bg-navbar: rgba(255, 255, 255, 0.85);
    --bg-card: rgba(16, 185, 129, 0.03);
    --border-color: rgba(4, 120, 87, 0.14);
    --text-primary: #062e22;
    --text-secondary: #3d5f54;
    --text-muted: #86a399;
    --accent-glow: rgba(16, 185, 129, 0.06);
    
    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #065f46 0%, #047857 50%, #10b981 100%);
    --gradient-text: linear-gradient(90deg, #065f46, #047857, #10b981);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 24px rgba(4, 120, 87, 0.1);
    --shadow-lg: 0 16px 32px rgba(4, 120, 87, 0.14);
    
    /* Card Glows */
    --card-glow: rgba(16, 185, 129, 0.14);
}

/* ==========================================================================
   RESET & GLOBAL STYLES
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', 'Inter', 'Noto Sans JP', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ==========================================================================
   BACKGROUND DECORATIVE GLOWS
   ========================================================================== */

.bg-glow {
    position: fixed;
    border-radius: var(--radius-full);
    filter: blur(120px);
    z-index: -1;
    opacity: 0.4;
    pointer-events: none;
    transition: opacity var(--transition-slow);
}

.bg-glow-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #10b981 0%, transparent 70%);
    top: -10%;
    left: -10%;
}

.bg-glow-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #34d399 0%, transparent 70%);
    bottom: -10%;
    right: -10%;
}

.bg-glow-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #6ee7b7 0%, transparent 70%);
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
}

[data-theme="light"] .bg-glow {
    opacity: 0.15;
}

/* ==========================================================================
   TYPOGRAPHY UTILITIES
   ========================================================================== */

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

.badge {
    display: inline-block;
    padding: 6px 14px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    background-color: var(--border-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* ==========================================================================
   NAVIGATION BAR & ACTIONS
   ========================================================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: var(--bg-navbar);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 1.5px solid var(--text-primary);
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Language Switcher */
.lang-switcher {
    position: relative;
}

.lang-current {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.45rem 0.7rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.lang-current:hover,
.lang-current[aria-expanded="true"] {
    background-color: var(--border-color);
}

.lang-flag {
    width: 22px;
    height: 16px;
    border-radius: 3px;
    object-fit: cover;
    flex-shrink: 0;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12);
}

.lang-caret {
    font-size: 0.65rem;
    color: var(--text-muted);
    transition: transform var(--transition-fast);
}

.lang-current[aria-expanded="true"] .lang-caret {
    transform: rotate(180deg);
}

.lang-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    inset-inline-end: 0;
    z-index: 200;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.25rem;
    width: max-content;
    max-width: calc(100vw - 2rem);
    padding: 0.5rem;
    list-style: none;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.lang-menu[hidden] {
    display: none;
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-primary);
    white-space: nowrap;
    cursor: pointer;
    outline: none;
    transition: background-color var(--transition-fast);
}

.lang-option:hover,
.lang-option:focus-visible {
    background-color: var(--accent-glow);
}

.lang-option:focus-visible {
    box-shadow: inset 0 0 0 2px #10b981;
}

.lang-option[aria-selected="true"] {
    background-color: rgba(16, 185, 129, 0.16);
    font-weight: 700;
}

@media (max-width: 768px) {
    .lang-current-name {
        display: none;
    }
    /* Anchor the menu to the whole navbar row so it spans the screen width */
    .nav-container {
        position: relative;
    }
    .lang-switcher {
        position: static;
    }
    .lang-menu {
        top: calc(100% - 0.5rem);
        inset-inline: 1rem;
        width: auto;
        max-width: none;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* Theme Toggle */
.theme-toggle {
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--border-color);
}

/* ==========================================================================
   MAIN LAYOUT & SECTIONS
   ========================================================================== */

.main-content {
    max-width: 1200px;
    margin: 100px auto 40px;
    padding: 0 2rem;
}

section {
    padding: 60px 0;
}

/* ==========================================================================
   HERO / ABOUT SECTION
   ========================================================================== */

.hero-card {
    display: flex;
    align-items: center;
    gap: 4rem;
    padding: 3.5rem;
    background-color: var(--bg-card);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.hero-left {
    flex-shrink: 0;
}

.avatar-container {
    position: relative;
    width: 200px;
    height: 200px;
}

.avatar-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    position: relative;
    z-index: 2;
    border: 4px solid var(--bg-secondary);
}

.avatar-ring {
    position: absolute;
    top: -5px;
    left: -5px;
    width: 210px;
    height: 210px;
    border-radius: 50%;
    background: var(--gradient-hero);
    z-index: 1;
    animation: rotate 10s linear infinite;
}

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

.hero-right {
    flex-grow: 1;
}

.hero-badge {
    background: rgba(16, 185, 129, 0.1);
    color: #34d399;
    border-color: rgba(16, 185, 129, 0.2);
}

[data-theme="light"] .hero-badge {
    color: #047857;
}

.hero-title {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 1.25rem;
    letter-spacing: -0.03em;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 700px;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3.5rem;
    font-size: 1.05rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

/* Project Card */
.project-card {
    position: relative;
    background-color: var(--bg-card);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.1s ease, box-shadow var(--transition-fast), border-color var(--transition-fast);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    cursor: grab;
    user-select: none;
    -webkit-user-select: none;
    touch-action: pan-y;
}

.project-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, 0.18);
}

[data-theme="light"] .project-card:hover {
    border-color: rgba(0, 0, 0, 0.15);
}

/* 3D dynamic border glow wrapper */
.card-border-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 3;
    transition: background var(--transition-fast);
}

.project-header {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.project-icon-wrapper {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent-color);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.02);
}

[data-theme="light"] .project-icon-wrapper {
    background-color: rgba(0, 0, 0, 0.03);
}

/* Wrapper holding a project logo image instead of a Font Awesome icon */
.project-icon-wrapper.has-logo {
    flex-shrink: 0;
    padding: 0;
    overflow: hidden;
}

.project-logo {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: calc(var(--radius-sm) - 1px);
}

.project-meta {
    display: flex;
    flex-direction: column;
}

.project-name {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.project-tagline {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.project-body {
    flex-grow: 1;
    margin-bottom: 2rem;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.tech-badge {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

[data-theme="light"] .tech-badge {
    background-color: rgba(0, 0, 0, 0.03);
}

/* Plain project link list: shown without JS, or if data/projects.json fails to load */
.projects-fallback {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem 1.5rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.projects-fallback a {
    color: inherit;
    font-weight: 600;
}

.project-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* Buttons */
.action-btn {
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.65rem 1.1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), opacity var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    text-decoration: none;
}

.action-btn:hover {
    background-color: var(--border-color);
    border-color: var(--text-secondary);
}

.link-btn {
    flex-grow: 1;
}

.copy-btn {
    width: 42px;
    flex-shrink: 0;
    padding: 0;
}

.visit-btn {
    background: var(--gradient-hero);
    color: #ffffff;
    border: none;
    flex-grow: 1;
}

.visit-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.disabled-btn {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px dashed var(--border-color);
    color: var(--text-muted);
    cursor: not-allowed;
    flex-grow: 1;
}

[data-theme="light"] .disabled-btn {
    background-color: rgba(0, 0, 0, 0.02);
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */

.contact-section {
    margin-top: 40px;
    margin-bottom: 60px;
}

.contact-card {
    background: var(--gradient-hero);
    border-radius: var(--radius-lg);
    padding: 4rem 2.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.25);
    z-index: 1;
}

.contact-title, .contact-text, .contact-grid {
    position: relative;
    z-index: 2;
}

.contact-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.contact-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.contact-item {
    background-color: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 2rem 1.5rem;
    color: #ffffff;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
    cursor: grab;
    user-select: none;
    -webkit-user-select: none;
    -webkit-user-drag: none;
    touch-action: pan-y;
}

a.contact-item:hover {
    transform: translateY(-5px);
    background-color: rgba(0, 0, 0, 0.55);
    border-color: rgba(255, 255, 255, 0.3);
}

.contact-item i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #ffffff 0%, rgba(255, 255, 255, 0.7) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 600;
}

.contact-value {
    font-size: 1.05rem;
    font-weight: 500;
    word-break: break-all;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
    text-align: center;
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    row-gap: 0.5rem;
    gap: 1.5rem;
    margin-bottom: 0.75rem;
}

.footer-links a,
.cookie-settings-btn {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition-fast);
}

.cookie-settings-btn {
    background: none;
    border: none;
    padding: 0;
    font-family: inherit;
    cursor: pointer;
}

.footer-links a:hover,
.cookie-settings-btn:hover {
    color: var(--text-primary);
}

/* ==========================================================================
   DIGITAL BUSINESS CARD
   ========================================================================== */

.bizcard-content {
    max-width: 560px;
    margin-top: 120px;
    margin-bottom: 60px;
}

.bizcard {
    perspective: 1400px;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    touch-action: pan-y;
    margin-bottom: 1.5rem;
}

.bizcard-inner {
    display: grid;
    min-height: 300px;
    transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

.bizcard.is-flipped .bizcard-inner {
    transform: rotateY(180deg);
}

/* backface-visibility alone leaks the positioned children of the front face in some browsers,
   so also hide each face halfway through the flip */
.bizcard-front,
.bizcard-back {
    transition: visibility 0s linear 0.35s;
}

.bizcard.is-flipped .bizcard-front,
.bizcard:not(.is-flipped) .bizcard-back {
    visibility: hidden;
}

/* Both faces share one grid cell so the card takes the height of the taller face */
.bizcard-face {
    grid-area: 1 / 1;
    border-radius: var(--radius-lg);
    padding: 0;
    min-width: 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    position: relative;
}

.bizcard-art {
    display: block;
    width: 100%;
    height: auto;
    border-radius: inherit;
}

.bizcard-front {
    transform: rotateY(0deg);
    background: var(--gradient-hero);
    color: #ffffff;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.bizcard-front::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.45) 100%);
    z-index: 0;
}

.bizcard-front > * {
    position: relative;
    z-index: 1;
}

.bizcard-top {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.bizcard-avatar {
    width: 84px;
    height: 84px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 3px solid rgba(255, 255, 255, 0.8);
    flex-shrink: 0;
}

.bizcard-name {
    font-size: 1.9rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    word-break: break-word;
}

.bizcard-role {
    display: inline-block;
    margin-top: 0.4rem;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.8);
}

.bizcard-tagline {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
}

.bizcard-info {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    font-size: 0.9rem;
}

.bizcard-info i {
    width: 1.2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

.bizcard-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: auto;
}

.bizcard-stack .tech-badge,
[data-theme="light"] .bizcard-stack .tech-badge {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.25);
    color: #ffffff;
}

.bizcard-back {
    transform: rotateY(180deg);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.bizcard-qr {
    position: absolute;
    left: 12.5%;
    top: 29.5%;
    width: 27%;
    aspect-ratio: 1;
    background: #ffffff;
    padding: 0;
    line-height: 0;
}

.bizcard-qr img,
.bizcard-qr canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.bizcard-qr-caption {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-align: center;
}

.bizcard-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.bizcard-btn {
    font: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 0.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.bizcard-btn:hover {
    transform: translateY(-2px);
    border-color: #10b981;
}

.bizcard-btn.is-active {
    background: var(--gradient-hero);
    border-color: transparent;
    color: #ffffff;
}

.bizcard-toast {
    text-align: center;
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.bizcard-toast[hidden] {
    display: none;
}

.bizcard-links {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-top: 1.5rem;
}

.bizcard-link {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.bizcard-link:hover {
    transform: translateX(4px);
    border-color: #10b981;
}

.bizcard-link > i:first-child {
    width: 1.25rem;
    text-align: center;
    color: #10b981;
}

.bizcard-link-arrow {
    margin-left: auto;
    font-size: 0.8rem;
    color: var(--text-muted);
}

@media (max-width: 480px) {
    .bizcard-content {
        padding: 0 1rem;
    }
    .bizcard-face {
        padding: 1.5rem;
    }
    .bizcard-avatar {
        width: 64px;
        height: 64px;
    }
    .bizcard-name {
        font-size: 1.5rem;
    }
    .bizcard-btn {
        flex-direction: column;
        gap: 0.3rem;
        font-size: 0.8rem;
    }
}

/* ==========================================================================
   LEGAL PAGES (TERMS / PRIVACY)
   ========================================================================== */

.legal-content {
    margin-top: 100px;
}

.legal-back {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.legal-card {
    background-color: var(--bg-card);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    padding: 3rem 3.5rem;
    max-width: 860px;
    margin: 0 auto 40px;
}

.legal-title {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.legal-updated {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.legal-intro {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-size: 1.02rem;
}

.legal-card h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-top: 2.25rem;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.legal-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.98rem;
}

.legal-card ul {
    color: var(--text-secondary);
    font-size: 0.98rem;
    margin: 0 0 1rem 1.25rem;
}

.legal-card li {
    margin-bottom: 0.4rem;
}

.legal-card a {
    color: #34d399;
    text-decoration: underline;
    text-underline-offset: 2px;
}

[data-theme="light"] .legal-card a {
    color: #047857;
}

/* ==========================================================================
   TOAST NOTIFICATION
   ========================================================================== */

.toast {
    position: fixed;
    bottom: -80px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #10b981;
    color: #ffffff;
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.3);
    font-weight: 600;
    font-size: 0.95rem;
    z-index: 1000;
    transition: bottom 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
    bottom: 40px;
}

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */

@media (max-width: 1024px) {
    .hero-card {
        gap: 3rem;
        padding: 2.5rem;
    }
    .hero-title {
        font-size: 2.25rem;
    }
}

@media (max-width: 768px) {
    .navbar {
        position: relative;
    }
    .nav-container {
        flex-wrap: wrap;
        gap: 0.75rem;
        padding: 1rem;
    }
    .brand-name {
        font-size: 1.05rem;
    }
    .nav-links {
        order: 3;
        width: 100%;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem 1.25rem;
    }
    .main-content {
        margin-top: 20px;
    }
    .hero-card {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }
    .hero-stats {
        justify-content: center;
        gap: 2rem;
    }
    .projects-grid {
        grid-template-columns: 1fr;
    }
    .contact-card {
        padding: 3rem 1.5rem;
    }
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .contact-item {
        padding: 1.5rem 1rem;
    }
    .legal-card {
        padding: 2rem 1.5rem;
    }
}

/* ==========================================================================
   COOKIE CONSENT BANNER
   ========================================================================== */

.consent-banner {
    position: fixed;
    inset-inline: 1rem;
    bottom: 1rem;
    z-index: 300;
    display: flex;
    justify-content: center;
    pointer-events: none;
}

.consent-banner[hidden] {
    display: none;
}

.consent-inner {
    pointer-events: auto;
    width: 100%;
    max-width: 720px;
    padding: 1.25rem 1.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.consent-title {
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.consent-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.consent-text a {
    color: var(--text-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
    white-space: nowrap;
}

/* Accept and Decline look the same on purpose: declining must be as easy as accepting */
.consent-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1rem;
}

.consent-btn {
    min-width: 8rem;
    padding: 0.6rem 1.25rem;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    background-color: var(--accent-glow);
    border: 1px solid #10b981;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.consent-btn:hover {
    background-color: rgba(16, 185, 129, 0.22);
}

.consent-btn:focus-visible {
    outline: 2px solid #10b981;
    outline-offset: 2px;
}

@media (max-width: 480px) {
    .consent-actions {
        flex-direction: column-reverse;
    }
    .consent-btn {
        width: 100%;
    }
}

/* =========================================================
   /world: nav pill, hero call to action, first-visit invitation
   ========================================================= */
.nav-links a.nav-world {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.38rem 0.9rem;
    border-radius: var(--radius-full);
    background: var(--gradient-hero);
    color: #fff;
    font-weight: 700;
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.55);
    animation: world-pulse 2.6s ease-out infinite;
}
.nav-links a.nav-world:hover { color: #fff; transform: translateY(-1px); }

.hero-world {
    margin: 1.6rem 0 1.4rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
}
.world-cta {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.95rem 1.6rem;
    border-radius: var(--radius-full);
    background: var(--gradient-hero);
    color: #fff;
    font-family: 'Outfit', 'Inter', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    text-decoration: none;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.25);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    animation: world-pulse 2.6s ease-out infinite;
}
.world-cta::after { /* light sweep */
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, transparent 30%, rgba(255, 255, 255, 0.35) 50%, transparent 70%);
    transform: translateX(-120%);
    animation: world-sweep 3.2s ease-in-out infinite;
}
.world-cta:hover { transform: translateY(-2px) scale(1.02); box-shadow: 0 14px 36px rgba(16, 185, 129, 0.45); }
.world-cta:focus-visible { outline: 3px solid #fde68a; outline-offset: 3px; }
.world-cta-icon { font-size: 1.25rem; animation: world-spin 6s linear infinite; }
.world-cta-arrow { transition: transform var(--transition-fast); }
.world-cta:hover .world-cta-arrow { transform: translateX(4px); }
.world-cta-note { margin: 0; max-width: 34rem; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.55; }

@keyframes world-pulse {
    0% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.5), 0 10px 30px rgba(16, 185, 129, 0.3); }
    70% { box-shadow: 0 0 0 14px rgba(52, 211, 153, 0), 0 10px 30px rgba(16, 185, 129, 0.3); }
    100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0), 0 10px 30px rgba(16, 185, 129, 0.3); }
}
@keyframes world-sweep { 0%, 55% { transform: translateX(-120%); } 100% { transform: translateX(120%); } }
@keyframes world-spin { to { transform: rotate(360deg); } }

/* Invitation dialog */
.world-invite {
    width: min(92vw, 30rem);
    max-height: calc(100dvh - 2rem);
    margin: auto; /* the global reset removes the dialog default */
    overflow-y: auto;
    padding: 0;
    border: 1px solid rgba(243, 220, 155, 0.35);
    border-radius: var(--radius-lg);
    background: #10261e;
    color: #f4f1e8;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
    overflow: hidden;
    animation: invite-in 0.32s cubic-bezier(0.2, 0.9, 0.3, 1.2);
}
.world-invite::backdrop { background: rgba(2, 12, 8, 0.6); backdrop-filter: blur(4px); animation: fade-in 0.25s ease; }
.world-invite.is-closing { animation: invite-out 0.18s ease forwards; }
.world-invite-close {
    position: absolute; top: 0.6rem; right: 0.6rem; z-index: 2;
    width: 2.2rem; height: 2.2rem; border-radius: 50%;
    border: none; background: rgba(0, 0, 0, 0.3); color: #fff; cursor: pointer; font-size: 1rem;
}
.world-invite-close:hover { background: rgba(0, 0, 0, 0.5); }

.world-invite-scene {
    position: relative; height: 9.5rem; overflow: hidden;
    background: linear-gradient(180deg, #7cc7f0 0%, #bfe6f7 55%, #f6e7b8 100%);
}
.wi-sun { position: absolute; top: 1rem; left: 1.4rem; width: 2.6rem; height: 2.6rem; border-radius: 50%;
    background: radial-gradient(circle, #fff7d1 0%, #fde68a 60%, rgba(253, 230, 138, 0) 72%); }
.wi-cloud { position: absolute; height: 1rem; border-radius: 1rem; background: rgba(255, 255, 255, 0.9);
    box-shadow: 0.7rem -0.45rem 0 0.1rem rgba(255, 255, 255, 0.9); animation: cloud-drift 14s linear infinite; }
.wi-cloud-1 { top: 1.6rem; width: 3.6rem; left: 45%; }
.wi-cloud-2 { top: 3rem; width: 2.6rem; left: 75%; animation-duration: 19s; }
.wi-hill { position: absolute; bottom: -3.2rem; border-radius: 50%; }
.wi-hill-back { left: -10%; width: 80%; height: 7rem; background: #5fa86d; }
.wi-hill-front { right: -15%; width: 95%; height: 7.4rem; background: #3f8a52; }
.wi-chest { position: absolute; bottom: 1.4rem; right: 22%; width: 2.6rem; height: 2rem; border-radius: 0.4rem 0.4rem 0.25rem 0.25rem;
    background: linear-gradient(180deg, #b7793a 0 45%, #8a5526 45%); border: 2px solid #f3dc9b;
    display: grid; place-items: center; color: #fde68a; font-size: 0.8rem; box-shadow: 0 0 18px rgba(253, 230, 138, 0.8);
    animation: chest-bob 2.4s ease-in-out infinite; }
.wi-capy { position: absolute; bottom: 0.9rem; left: 18%; width: 3.6rem; height: 3.6rem; border-radius: 50%; object-fit: cover;
    border: 3px solid #f3dc9b; box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3); animation: capy-hop 2.4s ease-in-out infinite; }

.world-invite-body { padding: 1.3rem 1.5rem 1.4rem; }
.world-invite-eyebrow { display: inline-block; padding: 0.2rem 0.65rem; border-radius: var(--radius-full);
    background: rgba(243, 220, 155, 0.14); color: #f3dc9b; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.04em; }
.world-invite h2 { margin: 0.6rem 0 0.5rem; font-family: 'Outfit', 'Inter', sans-serif; font-size: 1.5rem; line-height: 1.25; color: #fff; }
.world-invite p { margin: 0; color: #cfe0d6; line-height: 1.6; font-size: 0.97rem; }
.world-invite-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem 1rem; margin: 1.2rem 0 0.8rem; }
.world-invite-actions .world-cta { font-size: 1.05rem; padding: 0.85rem 1.4rem; }
.world-invite-stay { border: none; background: none; color: #a7c4b9; font: inherit; font-size: 0.92rem; cursor: pointer;
    text-decoration: underline; text-underline-offset: 3px; padding: 0.4rem 0.2rem; }
.world-invite-stay:hover { color: #fff; }
.world-invite .world-invite-hint { font-size: 0.8rem; color: #87a89a; }

@keyframes invite-in { from { opacity: 0; transform: translateY(18px) scale(0.96); } to { opacity: 1; transform: none; } }
@keyframes invite-out { to { opacity: 0; transform: translateY(10px) scale(0.98); } }
@keyframes fade-in { from { opacity: 0; } }
@keyframes cloud-drift { from { transform: translateX(0); } to { transform: translateX(-28rem); } }
@keyframes chest-bob { 50% { transform: translateY(-4px); } }
@keyframes capy-hop { 0%, 60%, 100% { transform: translateY(0); } 75% { transform: translateY(-10px); } }

@media (max-width: 768px) {
    .hero-world { align-items: center; text-align: center; }
    .world-cta { font-size: 1.05rem; }
    .world-invite-actions { flex-direction: column; align-items: stretch; text-align: center; }
    .world-invite-actions .world-cta { justify-content: center; }
}
@media (prefers-reduced-motion: reduce) {
    .world-cta, .world-cta::after, .world-cta-icon, .nav-links a.nav-world, .world-invite, .wi-cloud, .wi-chest, .wi-capy { animation: none; }
}