/* ===========================
   CSS Variables - Premium Neon Theme
   =========================== */
:root {
    /* 主色調 - Electric Violet & Neon Blue */
    --primary: #7c3aed;
    --primary-light: #a78bfa;
    --primary-dark: #5b21b6;
    --primary-glow: rgba(124, 58, 237, 0.5);

    /* 強調色 - Hot Pink */
    --accent: #f43f5e;
    --accent-light: #fb7185;
    --accent-glow: rgba(244, 63, 94, 0.5);

    /* 功能色 */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    /* 深色背景體系 */
    --bg-main: #0a0a0f;
    --bg-gradient-start: #0f172a;
    --bg-gradient-end: #020617;

    /* Glassmorphism 面板 */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-highlight: rgba(255, 255, 255, 0.15);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.36);

    /* 文字系統 */
    --text-main: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.6);
    --text-dim: rgba(255, 255, 255, 0.3);

    /* 數值變數 */
    --radius-xl: 24px;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

/* ===========================
   Reset & Base
   =========================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Noto Sans TC', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    min-height: 100dvh;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

.footer {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-xl);
    font-size: 0.9rem;
    max-width: 500px;
    margin: 0 auto;
    border-top: 1px solid var(--glass-border);
}

/* ===========================
   Animated Background
   =========================== */
.background-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.shape {
    position: absolute;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, var(--primary), transparent 70%);
    animation-delay: 0s;
}

.shape-2 {
    bottom: -10%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, var(--accent), transparent 70%);
    animation-delay: -5s;
}

.shape-3 {
    top: 40%;
    left: 40%;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, #3b82f6, transparent 70%);
    animation-delay: -10s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -50px) scale(1.1);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* ===========================
   Layout
   =========================== */
.app-container {
    max-width: 500px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    padding-bottom: 100px;
}

/* ===========================
   Header
   =========================== */
.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: slideDown 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.title {
    font-size: 2.8rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 0 30px var(--primary-glow);
}

.title-icon {
    font-size: 2.8rem;
    animation: bounce 2s infinite;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.subtitle span {
    color: var(--accent-light);
    font-weight: 700;
}

/* ===========================
   Glass Card Mixin
   =========================== */
.glass-panel,
.location-status,
.radius-control,
.category-btn,
.place-card,
.map-modal-content,
.selected-place {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-top: 1px solid var(--glass-highlight);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius-lg);
}

/* ===========================
   Location Status
   =========================== */
.location-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    animation: fadeIn 0.8s ease 0.2s both;
}

.location-icon {
    font-size: 1.5rem;
    filter: drop-shadow(0 0 10px var(--primary-glow));
    animation: pulse 2s infinite;
}

.location-text {
    flex: 1;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.location-status.success .location-text {
    color: var(--success);
    text-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

/* Control Buttons */
.icon-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-main);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.refresh-btn:hover {
    background: var(--primary);
    border-color: var(--primary-light);
    box-shadow: 0 0 15px var(--primary-glow);
    transform: rotate(180deg);
}

.map-btn:hover {
    background: var(--accent);
    border-color: var(--accent-light);
    box-shadow: 0 0 15px var(--accent-glow);
    transform: scale(1.1) rotate(15deg);
}

/* ===========================
   Radius Slider
   =========================== */
.radius-control {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    animation: fadeIn 0.8s ease 0.3s both;
}

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

.radius-label {
    font-weight: 500;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.radius-value {
    color: var(--accent-light);
    font-weight: 700;
    text-shadow: 0 0 10px rgba(244, 63, 94, 0.3);
}

.radius-slider {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.radius-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--text-main);
    border: 2px solid var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
    cursor: grab;
    transition: transform 0.2s;
    margin-top: -9px;
    /* center vertically */
}

.radius-slider::-webkit-slider-thumb:active {
    transform: scale(1.2);
    cursor: grabbing;
}

.radius-slider::-webkit-slider-runnable-track {
    width: 100%;
    height: 6px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 3px;
}

.radius-marks {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-sm);
    font-size: 0.75rem;
    color: var(--text-dim);
    font-weight: 500;
}

/* ===========================
   Main Actions
   =========================== */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    animation: slideUp 0.8s ease 0.4s both;
}

/* Random Button */
.random-btn {
    position: relative;
    width: 100%;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border: none;
    border-radius: var(--radius-xl);
    color: white;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px -10px var(--primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.random-btn:not(:disabled):hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 20px 40px -15px var(--accent-glow);
}

.random-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(45deg) translate(-100%, 0);
    transition: transform 0.6s ease;
}

.random-btn:hover::after {
    transform: rotate(45deg) translate(50%, 0);
}

.random-btn:disabled {
    opacity: 0.5;
    filter: grayscale(0.8);
    cursor: not-allowed;
}

.random-btn-favorites {
    background: linear-gradient(135deg, var(--accent), var(--success));
    box-shadow: 0 10px 30px -10px rgba(16, 185, 129, 0.4);
}

.random-btn-favorites:not(:disabled):hover {
    box-shadow: 0 20px 40px -15px rgba(16, 185, 129, 0.55);
}

/* Category Buttons */
.category-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.category-btn-wide {
    grid-column: 1 / -1;
    flex-direction: row;
    justify-content: center;
    gap: 0.75rem;
}

.category-btn {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.category-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, var(--primary-glow), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.category-btn:hover {
    transform: translateY(-5px);
    border-color: var(--primary-light);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.category-btn:hover::before {
    opacity: 0.4;
}

.category-btn.active {
    background: rgba(124, 58, 237, 0.2);
    border-color: var(--primary);
    box-shadow: 0 0 20px var(--primary-glow);
}

.category-icon {
    font-size: 2.5rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    z-index: 1;
}

.category-text {
    font-weight: 500;
    z-index: 1;
}

/* ===========================
   Results & Cards
   =========================== */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: var(--spacing-md);
    padding: 0 var(--spacing-xs);
}

.results-title {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.place-card {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    transition: all 0.3s ease;
    animation: fadeInUp 0.5s ease both;
}

.place-card:hover {
    transform: perspective(1000px) translate3d(0, -5px, 20px);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-light);
}

.place-card-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    border: 2px solid var(--glass-border);
    flex-shrink: 0;
}

.place-card-content {
    flex: 1;
    min-width: 0;
}

.place-card-name {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.place-card-meta {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 8px;
    display: flex;
    gap: 10px;
}

.nav-link {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: background 0.2s;
}

.nav-link:hover {
    background: var(--primary);
}

/* Favorite Button */
.favorite-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1.1rem;
}

.favorite-btn:hover {
    background: rgba(244, 63, 94, 0.15);
    border-color: rgba(244, 63, 94, 0.4);
    transform: scale(1.1);
}

.favorite-btn.active {
    background: rgba(244, 63, 94, 0.2);
    border-color: rgba(244, 63, 94, 0.5);
    box-shadow: 0 0 15px rgba(244, 63, 94, 0.3);
}

.favorite-btn.pulse {
    animation: heartPulse 0.3s ease;
}

@keyframes heartPulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.3);
    }

    100% {
        transform: scale(1);
    }
}

.heart-icon {
    line-height: 1;
}

/* ===========================
   Map Modal
   =========================== */
.map-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(20px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.map-modal:not([hidden]) {
    opacity: 1;
    pointer-events: auto;
}

.map-modal-content {
    width: 100%;
    max-width: 600px;
    height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: #1a1a2e;
    /* Fallback */
    background: linear-gradient(to bottom, #1e1e32, #11111a);
}

.map-modal-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.map-modal-body {
    flex: 1;
    position: relative;
    background: #000;
}

#map {
    width: 100%;
    height: 100%;
}

.map-hint {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    pointer-events: none;
    z-index: 1000;
}

.map-modal-footer {
    padding: var(--spacing-md);
    display: flex;
    gap: var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
}

.map-cancel-btn,
.map-confirm-btn {
    flex: 1;
    padding: 12px;
    border-radius: var(--radius-md);
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.map-cancel-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
}

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

.map-confirm-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===========================
   Random Animation
   =========================== */
.random-result {
    margin-bottom: var(--spacing-xl);
}

.spinning-cards {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 10px var(--primary-glow));
}

.spin-card {
    font-size: 3rem;
    animation: bounce 0.5s infinite alternate;
}

.selected-place {
    text-align: center;
    padding: var(--spacing-xl);
    border: 2px solid var(--accent);
    box-shadow: 0 0 50px var(--accent-glow);
    animation: popIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.selected-place .place-name {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, #ddd);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.selected-place .place-info {
    font-size: 1.1rem;
    color: var(--accent-light);
    margin-bottom: 1.5rem;
}

.selected-place .navigate-btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    box-shadow: 0 5px 15px rgba(244, 63, 94, 0.4);
    transition: all 0.3s;
}

.selected-place .navigate-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(244, 63, 94, 0.6);
}

/* ===========================
   Loading Overlay
   =========================== */
.loading-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    background: rgba(10, 10, 15, 0.55);
    backdrop-filter: blur(6px);
    z-index: 1500;
}

.loading-spinner {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.12);
    border-top-color: var(--accent);
    border-right-color: var(--primary);
    box-shadow: 0 0 18px var(--accent-glow);
    animation: spin 0.8s linear infinite;
}

.loading-text {
    color: var(--text-main);
    font-weight: 600;
    letter-spacing: 1px;
    text-shadow: 0 0 12px var(--primary-glow);
}

/* ===========================
   Keyframes
   =========================== */
@keyframes slideDown {
    from {
        transform: translateY(-30px);
        opacity: 0;
    }

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

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

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

[hidden] {
    display: none !important;
}

/* ===========================
   Utilities & Common
   =========================== */
.refresh-btn,
.map-btn,
.map-modal-close {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-main);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.map-modal-close {
    width: 32px;
    height: 32px;
    font-size: 1rem;
}