/* ==========================================================================
   Design System: Modern Editorial × Glassmorphism (B+C Fusion)
   Author: C.Y. Portfolio Design System
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- CSS 變數系統 (Design Tokens) --- */
:root {
    /* 預設為淺色模式 (Light Theme - 高雅珍珠白/瑞士極簡) */
    --color-bg-base: #f8fafc;
    --color-bg-subtle: #f1f5f9;
    --color-surface-glass: rgba(255, 255, 255, 0.75);
    --color-surface-glass-hover: rgba(255, 255, 255, 0.9);
    --color-surface-card: #ffffff;
    --color-border-glass: rgba(255, 255, 255, 0.9);
    --color-border-subtle: rgba(226, 232, 240, 0.8);
    --color-border-hover: rgba(99, 102, 241, 0.4);

    --color-text-main: #0f172a;
    --color-text-muted: #64748b;
    --color-text-light: #94a3b8;

    --color-primary: #6366f1;
    --color-primary-rgb: 99, 102, 241;
    --color-primary-hover: #4f46e5;
    --color-secondary: #06b6d4;
    --color-accent: #3b82f6;

    --aurora-1: rgba(99, 102, 241, 0.15);
    --aurora-2: rgba(6, 182, 212, 0.15);
    --aurora-3: rgba(236, 72, 153, 0.1);

    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 10px 30px -5px rgba(15, 23, 42, 0.08), 0 4px 12px -2px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 20px 40px -10px rgba(15, 23, 42, 0.12), 0 8px 20px -4px rgba(15, 23, 42, 0.06);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.2);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-pill: 9999px;

    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --nav-height: 70px;
    --container-max: 1100px;
    --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 深色模式變數 (Dark Theme - 奢華曜石黑/深空極光) */
[data-theme="dark"] {
    --color-bg-base: #090d16;
    --color-bg-subtle: #0f172a;
    --color-surface-glass: rgba(15, 23, 42, 0.7);
    --color-surface-glass-hover: rgba(30, 41, 59, 0.85);
    --color-surface-card: #0f172a;
    --color-border-glass: rgba(255, 255, 255, 0.1);
    --color-border-subtle: rgba(255, 255, 255, 0.06);
    --color-border-hover: rgba(129, 140, 248, 0.5);

    --color-text-main: #f8fafc;
    --color-text-muted: #94a3b8;
    --color-text-light: #64748b;

    --color-primary: #818cf8;
    --color-primary-rgb: 129, 140, 248;
    --color-primary-hover: #a5b4fc;
    --color-secondary: #38bdf8;
    --color-accent: #60a5fa;

    --aurora-1: rgba(99, 102, 241, 0.25);
    --aurora-2: rgba(56, 189, 248, 0.2);
    --aurora-3: rgba(217, 70, 239, 0.15);

    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 30px -5px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 50px rgba(129, 140, 248, 0.25);
}

/* --- 全域重置與基礎樣式 --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-base);
    color: var(--color-text-main);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    transition: background-color 0.4s ease, color 0.4s ease;
    -webkit-font-smoothing: antialiased;
}

/* 極光動態光斑背景 (Aurora Mesh Background) */
.aurora-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.aurora-blob {
    position: absolute;
    filter: blur(90px);
    opacity: 0.8;
    border-radius: 50%;
    animation: auroraFloat 20s infinite alternate cubic-bezier(0.4, 0, 0.2, 1);
}

.aurora-blob-1 {
    top: -10%;
    left: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--aurora-1) 0%, transparent 70%);
}

.aurora-blob-2 {
    top: 40%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--aurora-2) 0%, transparent 70%);
    animation-delay: -5s;
    animation-duration: 25s;
}

.aurora-blob-3 {
    bottom: -15%;
    left: 25%;
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, var(--aurora-3) 0%, transparent 70%);
    animation-delay: -10s;
    animation-duration: 22s;
}

@keyframes auroraFloat {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(40px, 30px) scale(1.1); }
    100% { transform: translate(-30px, -40px) scale(0.95); }
}

/* 微細網格紋理 (Grid Texture) */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(rgba(148, 163, 184, 0.12) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
    z-index: 1;
    opacity: 0.6;
}

/* 主容器 */
.app-container {
    position: relative;
    z-index: 2;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: calc(var(--nav-height) + 30px) 24px 60px;
    display: flex;
    flex-direction: column;
    gap: 50px;
}

/* --- 頂部浮動膠囊導航 (Floating Capsule Navbar) --- */
.nav-header {
    position: fixed;
    top: 18px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    padding: 0 20px;
    pointer-events: none;
}

.nav-capsule {
    pointer-events: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    background: var(--color-surface-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--color-border-glass);
    box-shadow: var(--shadow-md);
    padding: 8px 12px 8px 20px;
    border-radius: var(--radius-pill);
    max-width: 820px;
    width: 100%;
    transition: var(--transition-smooth);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--color-text-main);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.5px;
}

.nav-brand-dot {
    width: 9px;
    height: 9px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 6px;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text-muted);
    font-size: 0.92rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--color-text-main);
    background: rgba(var(--color-primary-rgb), 0.08);
}

.nav-link.active {
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.12);
    font-weight: 600;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 主題切換按鈕 */
.theme-toggle-btn {
    background: transparent;
    border: 1px solid var(--color-border-subtle);
    color: var(--color-text-muted);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.theme-toggle-btn:hover {
    color: var(--color-text-main);
    border-color: var(--color-primary);
    transform: rotate(15deg);
}

.theme-toggle-btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* 手機版漢堡選單按鈕 */
.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--color-text-main);
    width: 38px;
    height: 38px;
    cursor: pointer;
    padding: 8px;
}

/* --- 毛玻璃卡片通用元件 (Glassmorphic Card) --- */
.glass-card {
    background: var(--color-surface-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--color-border-glass);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.glass-card:hover {
    background: var(--color-surface-glass-hover);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

/* --- Bento Grid 現代網格佈局 --- */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 24px;
}

.col-12 { grid-column: span 12; }
.col-8  { grid-column: span 8; }
.col-7  { grid-column: span 7; }
.col-6  { grid-column: span 6; }
.col-5  { grid-column: span 5; }
.col-4  { grid-column: span 4; }

/* --- Hero 區塊樣式 --- */
.hero-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding: 48px;
    position: relative;
}

.hero-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, var(--aurora-1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.hero-badge {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(var(--color-primary-rgb), 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(var(--color-primary-rgb), 0.2);
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    font-weight: 600;
}

.hero-badge-dot {
    width: 6px;
    height: 6px;
    background-color: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 8px #10b981;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1.5px;
    color: var(--color-text-main);
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    max-width: 580px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 8px;
    flex-wrap: wrap;
}

/* 頭像光環 */
.hero-avatar-wrapper {
    position: relative;
    flex-shrink: 0;
}

.hero-avatar-glow {
    position: absolute;
    inset: -6px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50%;
    filter: blur(14px);
    opacity: 0.6;
    animation: avatarPulse 4s ease-in-out infinite alternate;
}

@keyframes avatarPulse {
    0% { transform: scale(0.95); opacity: 0.4; }
    100% { transform: scale(1.05); opacity: 0.8; }
}

.hero-avatar {
    position: relative;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 4px solid var(--color-surface-card);
    object-fit: cover;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-smooth);
}

.hero-avatar:hover {
    transform: scale(1.04) rotate(2deg);
}

/* --- 按鈕系統 --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-pill);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    font-family: var(--font-body);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
    color: #ffffff !important;
    box-shadow: 0 4px 14px rgba(var(--color-primary-rgb), 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--color-primary-rgb), 0.45);
    color: #ffffff !important;
}

.btn-secondary {
    background: var(--color-surface-glass);
    color: var(--color-text-main);
    border: 1px solid var(--color-border-subtle);
}

.btn-secondary:hover {
    background: var(--color-surface-glass-hover);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-icon {
    padding: 12px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
}

/* --- 標籤系統 (Tags / Badges) --- */
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(var(--color-primary-rgb), 0.08);
    color: var(--color-text-main);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.tag:hover {
    background: rgba(var(--color-primary-rgb), 0.16);
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

.tag-mono {
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

/* --- 區塊標題 (Section Heading) --- */
.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 24px;
}

.section-title-wrap {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.section-subtitle {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-primary);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-text-main);
    letter-spacing: -0.5px;
}

.section-more-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.92rem;
    transition: var(--transition-smooth);
}

.section-more-link:hover {
    gap: 10px;
    color: var(--color-primary-hover);
}

/* --- 專案卡片 (Project Card) --- */
.project-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 20px;
    height: 100%;
}

.project-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.project-icon-box {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.15), rgba(6, 182, 212, 0.15));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 1.4rem;
}

.project-status {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.project-status.wip {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    border-color: rgba(245, 158, 11, 0.2);
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-main);
    margin-top: 6px;
}

.project-desc {
    color: var(--color-text-muted);
    font-size: 0.92rem;
    line-height: 1.6;
    margin-top: 6px;
}

.project-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--color-border-subtle);
}

.project-links {
    display: flex;
    align-items: center;
    gap: 12px;
}

.project-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.project-link-btn:hover {
    color: var(--color-primary-hover);
    transform: translateX(2px);
}

/* --- 經歷時間軸 (Timeline) --- */
.timeline {
    position: relative;
    padding-left: 28px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: var(--color-border-subtle);
}

.timeline-item {
    position: relative;
}

.timeline-dot {
    position: absolute;
    left: -28px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid var(--color-bg-base);
    box-shadow: 0 0 10px var(--color-primary);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--color-primary);
    font-weight: 600;
}

.timeline-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-main);
    margin: 4px 0 6px;
}

.timeline-desc {
    color: var(--color-text-muted);
    font-size: 0.92rem;
}

/* --- 篩選標籤欄 (Filter Tabs) --- */
.filter-container {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.filter-btn {
    background: var(--color-surface-glass);
    border: 1px solid var(--color-border-subtle);
    color: var(--color-text-muted);
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.filter-btn:hover {
    color: var(--color-text-main);
    border-color: var(--color-primary);
}

.filter-btn.active {
    background: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.3);
}

/* --- 表單控制項 (Form Controls) --- */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.form-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-main);
}

.form-input, .form-textarea {
    width: 100%;
    background: var(--color-bg-base);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-text-main);
    transition: var(--transition-smooth);
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.15);
}

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

/* --- 頁尾 (Footer) --- */
.site-footer {
    position: relative;
    z-index: 2;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--color-text-muted);
    font-size: 0.88rem;
    border-top: 1px solid var(--color-border-subtle);
    padding-top: 24px;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer-link {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: var(--transition-smooth);
}

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

/* --- 進場動畫 (Fade in & Scroll Reveal) --- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* --- 響應式適配 (Responsive Breakpoints) --- */
@media (max-width: 900px) {
    .app-container {
        padding-top: calc(var(--nav-height) + 15px);
        gap: 40px;
    }

    .hero-card {
        flex-direction: column-reverse;
        text-align: center;
        padding: 32px 24px;
    }

    .hero-badge {
        align-self: center;
    }

    .hero-actions {
        justify-content: center;
    }

    .col-8, .col-7, .col-6, .col-5, .col-4 {
        grid-column: span 12;
    }

    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: calc(100% + 10px);
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-surface-glass);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        border: 1px solid var(--color-border-glass);
        border-radius: var(--radius-lg);
        padding: 12px;
        box-shadow: var(--shadow-lg);
        gap: 6px;
    }

    .nav-links.open {
        display: flex;
        animation: menuDropdown 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    }

    .nav-link {
        width: 100%;
        text-align: center;
        padding: 12px 16px;
        font-size: 1rem;
    }

    .site-footer {
        flex-direction: column;
        gap: 16px;
        text-align: center;
        padding-bottom: calc(30px + env(safe-area-inset-bottom, 0px));
    }
}

/* 小型手機專屬優化 (Mobile <= 640px) */
@media (max-width: 640px) {
    .app-container {
        padding-left: 16px;
        padding-right: 16px;
        gap: 32px;
    }

    .nav-header {
        top: 10px;
        padding: 0 12px;
    }

    .nav-capsule {
        padding: 6px 12px 6px 16px;
    }

    .nav-brand {
        font-size: 1.05rem;
    }

    .hero-card {
        padding: 28px 18px;
        gap: 24px;
        border-radius: var(--radius-lg);
    }

    .hero-avatar {
        width: 110px;
        height: 110px;
    }

    .hero-avatar-glow {
        filter: blur(10px);
    }

    .hero-title {
        font-size: 1.85rem;
        letter-spacing: -0.5px;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .hero-actions .btn-icon {
        width: 100%;
        border-radius: var(--radius-pill);
    }

    .glass-card {
        padding: 20px 16px;
        border-radius: var(--radius-lg);
    }

    .project-title {
        font-size: 1.15rem;
    }

    .project-desc {
        font-size: 0.88rem;
    }

    .project-footer {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .project-links {
        flex-direction: column;
        width: 100%;
    }

    .project-links .btn {
        width: 100%;
    }

    .project-link-btn {
        justify-content: center;
        padding: 8px 0;
    }

    .form-input, .form-textarea {
        font-size: 16px; /* 防止 iOS Safari 點擊聚焦時自動畫面放大 */
    }

    .filter-container {
        gap: 6px;
    }

    .filter-btn {
        padding: 6px 14px;
        font-size: 0.82rem;
    }
}

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