/* ═══════════════════════════════════════════════════════════════
   WhatsApp msgstore.db Viewer - Dark Theme
   ═══════════════════════════════════════════════════════════════ */

:root {
    --bg-primary: #0b141a;
    --bg-secondary: #111b21;
    --bg-sidebar: #111b21;
    --bg-header: #1f2c34;
    --bg-chat: #0b141a;
    --bg-input: #2a3942;
    --bg-hover: #182229;
    --bg-bubble-sent: #005c4b;
    --bg-bubble-received: #202c33;
    --text-primary: #e9edef;
    --text-secondary: #8696a0;
    --text-bubble: #e9edef;
    --border-color: #222d34;
    --accent: #00a884;
    --accent-hover: #06cf9c;
    --danger: #ea4335;
    --danger-hover: #ff6b5e;
    --success: #00a884;
    --warning: #f5c542;
    --shadow: rgba(0,0,0,0.3);
    --radius: 8px;
    --radius-lg: 12px;
    --font: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --transition: all 0.2s ease;
}

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

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow: hidden;
}

/* ─── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--bg-input);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* ─── Upload Page ───────────────────────────────────────────── */
.upload-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

.upload-container {
    text-align: center;
    padding: 3rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px var(--shadow);
    max-width: 450px;
    width: 90%;
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.upload-container h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.upload-container p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.upload-container code {
    background: var(--bg-input);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.upload-btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background: var(--bg-input);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

.file-name {
    margin: 0.8rem 0;
    color: var(--accent);
    font-size: 0.85rem;
    min-height: 1.2rem;
}

.progress {
    margin-top: 1rem;
    text-align: center;
}

.progress-bar {
    height: 4px;
    background: var(--bg-input);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-bar::after {
    content: '';
    display: block;
    height: 100%;
    width: 30%;
    background: var(--accent);
    border-radius: 2px;
    animation: loading 1.5s infinite ease-in-out;
}

@keyframes loading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(400%); }
}

.progress span {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ─── Buttons ───────────────────────────────────────────────── */
.btn {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

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

.btn-primary {
    background: var(--accent);
    color: #fff;
}
.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: scale(0.97);
}

.btn-success {
    background: var(--accent);
    color: #fff;
}
.btn-success:hover {
    background: var(--accent-hover);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}
.btn-outline:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}
.btn-danger:hover {
    background: var(--danger-hover);
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.2rem;
    font-weight: bold;
}

/* ─── Header ────────────────────────────────────────────────── */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 1.2rem;
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
}

.header-right, .header-left {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.header .logo {
    font-size: 1.5rem;
}

.header h1 {
    font-size: 1.1rem;
    font-weight: 600;
}

.badge {
    background: var(--bg-input);
    color: var(--text-secondary);
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.75rem;
}

.badge-sm {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

/* ─── App Layout ────────────────────────────────────────────── */
.main-page {
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* ─── Sidebar ───────────────────────────────────────────────── */
.sidebar {
    width: 320px;
    min-width: 320px;
    background: var(--bg-sidebar);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: 0.8rem;
    display: flex;
    gap: 0.5rem;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.search-input {
    flex: 1;
    padding: 0.5rem 0.8rem;
    background: var(--bg-input);
    border: none;
    border-radius: 20px;
    color: var(--text-primary);
    font-size: 0.85rem;
    outline: none;
}

.search-input:focus {
    box-shadow: 0 0 0 1px var(--accent);
}

.chat-list {
    flex: 1;
    overflow-y: auto;
}

.chat-item {
    display: flex;
    align-items: center;
    padding: 0.8rem 1rem;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
}

.chat-item:hover {
    background: var(--bg-hover);
}

.chat-item.active {
    background: var(--bg-hover);
    border-right: 3px solid var(--accent);
}

.chat-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--bg-input);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 0.8rem;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.chat-details {
    flex: 1;
    min-width: 0;
}

.chat-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    direction: ltr;
    text-align: right;
}

.chat-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ─── Content Area ──────────────────────────────────────────── */
.content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-chat);
}

.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* ─── Chat Header ───────────────────────────────────────────── */
.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.7rem 1rem;
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
}

.chat-info h2 {
    font-size: 1rem;
    font-weight: 500;
    direction: ltr;
    text-align: right;
}

.chat-actions {
    display: flex;
    gap: 0.5rem;
}

/* ─── Search Bar ────────────────────────────────────────────── */
.search-bar {
    display: flex;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.search-bar input {
    flex: 1;
    padding: 0.4rem 0.8rem;
    background: var(--bg-input);
    border: none;
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.85rem;
    outline: none;
}

/* ─── Messages Container ────────────────────────────────────── */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

/* ─── Message Bubbles ───────────────────────────────────────── */
.message {
    max-width: 65%;
    padding: 0.5rem 0.7rem;
    border-radius: var(--radius);
    position: relative;
    word-wrap: break-word;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

.message-sent {
    align-self: flex-start;
    background: var(--bg-bubble-sent);
    border-radius: var(--radius) var(--radius) 0 var(--radius);
    margin-left: auto;
}

.message-received {
    align-self: flex-end;
    background: var(--bg-bubble-received);
    border-radius: var(--radius) var(--radius) var(--radius) 0;
    margin-right: auto;
}

.message-text {
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--text-bubble);
    margin-bottom: 0.2rem;
}

.message-meta {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.4rem;
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.message-actions {
    display: none;
    position: absolute;
    top: 4px;
    left: 4px;
    gap: 2px;
}

.message:hover .message-actions {
    display: flex;
}

.message-actions button {
    width: 24px;
    height: 24px;
    border: none;
    border-radius: 4px;
    background: rgba(0,0,0,0.4);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.message-actions button:hover {
    background: rgba(0,0,0,0.7);
}

/* ─── Date Separator ────────────────────────────────────────── */
.date-separator {
    text-align: center;
    margin: 0.8rem 0;
}

.date-separator span {
    background: var(--bg-header);
    color: var(--text-secondary);
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    font-size: 0.75rem;
}

/* ─── Load More ─────────────────────────────────────────────── */
.load-more {
    text-align: center;
    padding: 0.5rem;
}

/* ─── Add Message Bar ───────────────────────────────────────── */
.add-message-bar {
    display: flex;
    gap: 0.5rem;
    padding: 0.8rem 1rem;
    background: var(--bg-header);
    border-top: 1px solid var(--border-color);
    align-items: center;
}

.add-message-bar input {
    flex: 1;
    padding: 0.6rem 1rem;
    background: var(--bg-input);
    border: none;
    border-radius: 20px;
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
}

.add-message-bar input:focus {
    box-shadow: 0 0 0 1px var(--accent);
}

.add-message-bar select {
    padding: 0.5rem 0.8rem;
    background: var(--bg-input);
    border: none;
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.8rem;
    outline: none;
    cursor: pointer;
}

/* ─── Modals ────────────────────────────────────────────────── */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.15s ease;
}

.modal[hidden] {
    display: none !important;
}

.upload-page[hidden],
.main-page[hidden] {
    display: none !important;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 8px 32px var(--shadow);
}

.modal-content h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.modal-content textarea,
.modal-content input[type="text"],
.modal-content input[type="datetime-local"] {
    width: 100%;
    padding: 0.6rem 0.8rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    resize: vertical;
    margin-bottom: 1rem;
}

.modal-content textarea:focus,
.modal-content input:focus {
    border-color: var(--accent);
}

.modal-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

/* ─── Toast ─────────────────────────────────────────────────── */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.7rem 1.5rem;
    background: var(--bg-header);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.85rem;
    z-index: 2000;
    box-shadow: 0 4px 16px var(--shadow);
    animation: slideUp 0.3s ease;
}

.toast.success {
    border-color: var(--accent);
}

.toast.error {
    border-color: var(--danger);
}

@keyframes slideUp {
    from { transform: translateX(-50%) translateY(20px); opacity: 0; }
    to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

/* ─── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        min-width: 100%;
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        z-index: 100;
        transition: transform 0.3s ease;
    }

    .sidebar.hidden-mobile {
        transform: translateX(100%);
    }

    .message {
        max-width: 85%;
    }

    .header h1 {
        font-size: 0.95rem;
    }

    .header-left .btn span {
        display: none;
    }
}