:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --border: #334155;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-primary);
    background-image: url('opm圖.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    overflow: hidden;
}

/* Add a subtle dark overlay to ensure text readability over the bright sunset */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.4);
    z-index: -1;
}

.app-container {
    display: flex;
    width: 100%;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 2rem 1rem;
}

.logo {
    margin-bottom: 3rem;
    padding-left: 1rem;
}

.logo h2 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--accent);
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-links li {
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
}

.nav-links li:hover {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--text-primary);
}

.nav-links li.active {
    background-color: var(--accent);
    color: white;
}

.icon {
    font-size: 1.25rem;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2.5rem 3rem;
    overflow-y: auto;
    position: relative;
}

.view-section {
    display: none;
    animation: fadeIn 0.4s ease forwards;
}

.view-section.active {
    display: block;
}

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

.section-header {
    margin-bottom: 2rem;
}

.section-header h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--text-secondary);
}

/* Search Bar */
.search-bar-container {
    margin-bottom: 2rem;
}

#searchInput {
    width: 100%;
    padding: 1.25rem 1.5rem;
    border-radius: 12px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    font-size: 1.1rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    outline: none;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

#searchInput:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
}

/* Table */
.table-container {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th {
    background-color: rgba(255, 255, 255, 0.03);
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

td {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    transition: background 0.2s;
}

tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

tbody tr:last-child td {
    border-bottom: none;
}

.ext-number {
    font-weight: 700;
    color: var(--accent);
    background: rgba(59, 130, 246, 0.15);
    padding: 0.25rem 0.75rem;
    border-radius: 99px;
    display: inline-block;
}

.no-results {
    padding: 3rem;
    text-align: center;
    color: var(--text-secondary);
}

.hidden {
    display: none !important;
}

/* Conversation Mode (Translator) */
.translator-container {
    max-width: 900px;
}

.conversation-mode {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.chat-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.panel-header {
    background: rgba(255, 255, 255, 0.03);
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-left h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin: 0;
}

.header-left select {
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    outline: none;
}

.action-btn {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.action-btn:hover {
    background: var(--glass-bg);
    border-color: var(--accent);
}

.action-btn.recording {
    background: rgba(239, 68, 68, 0.2);
    border-color: #ef4444;
    color: #ef4444;
    animation: pulse 1.5s infinite;
}

.panel-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.text-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: -0.5rem;
}

.highlight-label {
    color: var(--accent);
    font-weight: 600;
}

.text-box {
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: 8px;
    min-height: 80px;
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1.5;
    border: 1px solid transparent;
}

.highlight-box {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
}

textarea#myResponse {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 1rem;
    font-size: 1.1rem;
    border-radius: 8px;
    min-height: 100px;
    resize: vertical;
    outline: none;
    transition: border-color 0.3s;
}

textarea#myResponse:focus {
    border-color: var(--accent);
}

.common-phrases {
    padding: 0 1.5rem 1.5rem 1.5rem;
}

.common-phrases h4 {
    margin-bottom: 0.75rem;
    font-size: 1rem;
    color: var(--text-secondary);
}

.phrase-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.phrase-btn {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 99px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.phrase-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
}