:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #1e2746;
    --bg-input: #0f1629;
    --text-primary: #e0e0ff;
    --text-secondary: #8b8db0;
    --text-muted: #5a5c7a;
    --accent-purple: #7b2ff7;
    --accent-purple-light: #9b5ff7;
    --accent-purple-glow: rgba(123, 47, 247, 0.3);
    --accent-green: #00d97e;
    --accent-blue: #3b82f6;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --border-color: #2d3154;
    --border-active: #7b2ff7;
    --bubble-in: #2d3154;
    --bubble-out: #2a4d3a;
    --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

h1:focus { outline: none; }
a { color: var(--accent-purple-light); }
a:hover { color: var(--accent-purple); }

/* Header */
.app-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.app-header h1 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.app-header .logo-accent { color: var(--accent-purple-light); }
.app-header .subtitle { font-size: 0.8rem; color: var(--text-muted); margin-left: auto; }

/* Navigation */
.header-nav { margin-left: auto; display: flex; gap: 0.25rem; }

.nav-tab {
    font-size: 0.8rem;
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    font-weight: 500;
}

.nav-tab:hover {
    color: var(--text-primary);
    background: rgba(123, 47, 247, 0.1);
}

.nav-tab-active {
    color: var(--accent-purple-light);
    background: var(--accent-purple-glow);
}

/* Page container */
.page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* Panel */
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 1.25rem;
}

.panel-header {
    background: var(--bg-secondary);
    padding: 0.6rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h2 {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.panel-badge {
    font-size: 0.65rem;
    padding: 0.15rem 0.5rem;
    border-radius: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-purple { background: var(--accent-purple-glow); color: var(--accent-purple-light); border: 1px solid var(--accent-purple); }
.badge-blue   { background: rgba(59, 130, 246, 0.15); color: var(--accent-blue);  border: 1px solid rgba(59, 130, 246, 0.4); }
.badge-green  { background: rgba(0, 217, 126, 0.15);  color: var(--accent-green); border: 1px solid rgba(0, 217, 126, 0.4); }
.badge-orange { background: rgba(245, 158, 11, 0.15); color: var(--accent-orange); border: 1px solid rgba(245, 158, 11, 0.4); }

.panel-body { padding: 1rem; }

/* Form */
.form-group { margin-bottom: 0.85rem; }
.form-group label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.form-help { font-size: 0.7rem; color: var(--text-muted); margin-top: 0.25rem; }

.form-input, .form-select {
    width: 100%;
    padding: 0.55rem 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color 0.2s;
    font-family: inherit;
}
.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 2px var(--accent-purple-glow);
}
textarea.form-input { resize: vertical; min-height: 80px; }

/* Buttons */
.btn {
    padding: 0.55rem 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: inherit;
}
.btn-primary { background: var(--accent-purple); color: white; }
.btn-primary:hover:not(:disabled) {
    background: var(--accent-purple-light);
    box-shadow: 0 2px 8px var(--accent-purple-glow);
}
.btn-primary:disabled, .btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover:not(:disabled) {
    background: var(--bg-secondary);
    border-color: var(--accent-purple);
}
.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.75rem; }

/* Alerts */
.alert {
    padding: 0.6rem 0.85rem;
    border-radius: 6px;
    font-size: 0.85rem;
    margin-top: 0.75rem;
    border: 1px solid transparent;
}
.alert-success { color: var(--accent-green); background: rgba(0, 217, 126, 0.1); border-color: rgba(0, 217, 126, 0.4); }
.alert-danger  { color: var(--accent-red);   background: rgba(239, 68, 68, 0.1); border-color: rgba(239, 68, 68, 0.4); }
.alert-warning { color: var(--accent-orange); background: rgba(245, 158, 11, 0.1); border-color: rgba(245, 158, 11, 0.4); }
.alert-info    { color: var(--accent-blue);  background: rgba(59, 130, 246, 0.1); border-color: rgba(59, 130, 246, 0.4); }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 2.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Data table */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}
.data-table th {
    text-align: left;
    padding: 0.55rem 0.85rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}
.data-table td {
    padding: 0.6rem 0.85rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}
.data-table tbody tr { cursor: pointer; }
.data-table tbody tr:hover { background: rgba(123, 47, 247, 0.08); }
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table .mono { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-muted); }

/* Conversation thread (chat bubbles) */
.thread {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 62vh;
    overflow-y: auto;
    padding: 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 6px;
}
.thread::-webkit-scrollbar { width: 6px; }
.thread::-webkit-scrollbar-track { background: transparent; }
.thread::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
.thread::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

.bubble-row { display: flex; }
.bubble-row.out { justify-content: flex-end; }
.bubble-row > div { max-width: 85%; min-width: 0; }

.bubble {
    max-width: 100%;
    padding: 9px 13px;
    border-radius: 14px;
    line-height: 1.4;
    font-size: 0.88rem;
    overflow-wrap: anywhere;
    color: var(--text-primary);
}
.bubble.in  { background: var(--bubble-in);  border-bottom-left-radius: 4px; }
.bubble.out { background: var(--bubble-out); border-bottom-right-radius: 4px; }

.bubble-meta {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 4px;
    display: flex;
    gap: 6px;
    font-family: var(--font-mono);
}
.bubble-meta.out { justify-content: flex-end; }

.tick { font-weight: 600; }
.tick.queued    { color: var(--text-muted); }
.tick.delivered { color: var(--text-secondary); }
.tick.read      { color: var(--accent-blue); }
.tick.failed    { color: var(--accent-red); }

.composer {
    margin-top: 12px;
    display: flex;
    gap: 8px;
}
.composer textarea {
    flex: 1;
    min-height: 50px;
}

.window-closed {
    margin-top: 12px;
}

.media-image {
    max-width: 220px;
    border-radius: 8px;
    margin-top: 6px;
    display: block;
}
.media-link {
    display: inline-block;
    margin-top: 6px;
    font-size: 0.8rem;
}

/* Conversation header strip */
.conv-header {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}
.conv-header .customer { font-size: 1.1rem; font-weight: 600; color: var(--text-primary); }
.conv-header .via      { font-size: 0.8rem; color: var(--text-muted); }

/* Logs page */
.logs-list { display: flex; flex-direction: column; }
.logs-header-row,
.logs-row-header {
    display: grid;
    grid-template-columns: 18px 80px 90px 140px 1fr 80px 20px;
    gap: 10px;
    align-items: center;
    padding: 8px 12px;
    font-size: 0.82rem;
}
.logs-header-row {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: default;
}
.logs-row { border-bottom: 1px solid var(--border-color); }
.logs-row-header { cursor: pointer; transition: background 0.15s; }
.logs-row-header:hover { background: rgba(123, 47, 247, 0.06); }
.logs-row.open .logs-row-header { background: rgba(123, 47, 247, 0.1); }

.logs-arrow { color: var(--accent-purple-light); font-weight: 600; text-align: center; }
.logs-customer { font-family: var(--font-mono); font-size: 0.78rem; }
.logs-preview {
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.logs-time { color: var(--text-muted); font-size: 0.74rem; text-align: right; }
.logs-toggle { color: var(--text-muted); text-align: center; }

.direction-badge {
    font-size: 0.7rem;
    padding: 0.12rem 0.4rem;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    text-align: center;
}
.dir-inbound  { background: rgba(59, 130, 246, 0.15); color: var(--accent-blue); }
.dir-outbound { background: rgba(0, 217, 126, 0.15);  color: var(--accent-green); }

.status-pill {
    font-size: 0.7rem;
    padding: 0.12rem 0.4rem;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
}
.status-queued    { background: rgba(245, 158, 11, 0.15); color: var(--accent-orange); }
.status-sent      { background: rgba(0, 217, 126, 0.10);  color: var(--accent-green); }
.status-delivered { background: rgba(0, 217, 126, 0.18);  color: var(--accent-green); }
.status-read      { background: rgba(59, 130, 246, 0.18); color: var(--accent-blue); }
.status-failed    { background: rgba(239, 68, 68, 0.18);  color: var(--accent-red); }
.status-received  { background: rgba(123, 47, 247, 0.18); color: var(--accent-purple-light); }

.logs-row-body {
    background: var(--bg-input);
    padding: 12px 16px;
    font-size: 0.85rem;
}
.logs-ids {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 0.5rem;
}
.logs-ids code {
    background: var(--bg-card);
    padding: 1px 5px;
    border-radius: 3px;
    color: var(--text-primary);
}
.logs-body-preview {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.5rem 0.75rem;
    color: var(--text-primary);
    margin: 0.5rem 0;
    white-space: pre-wrap;
    word-break: break-word;
}
.logs-section-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin: 0.85rem 0 0.35rem 0;
}
.logs-stream { list-style: none; padding: 0; margin: 0; }
.log-entry {
    display: grid;
    grid-template-columns: 80px 100px 1fr;
    gap: 10px;
    align-items: start;
    padding: 4px 8px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
}
.log-entry:last-child { border-bottom: none; }
.log-time  { color: var(--text-muted); font-size: 0.72rem; }
.log-stage {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    font-size: 0.7rem;
    color: var(--accent-purple-light);
}
.log-text { color: var(--text-primary); }
.log-warning .log-stage { color: var(--accent-orange); }
.log-error   .log-stage { color: var(--accent-red); }
.log-exception {
    grid-column: 1 / -1;
    background: rgba(239, 68, 68, 0.08);
    border-left: 2px solid var(--accent-red);
    padding: 6px 10px;
    margin: 4px 0 0;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent-red);
    white-space: pre-wrap;
    word-break: break-word;
}

/* Blazor error UI */
#blazor-error-ui {
    background: var(--accent-red);
    color: white;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.4);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: 0.75rem; top: 0.5rem; }

.blazor-error-boundary { padding: 1rem; color: white; background: var(--accent-red); }
.blazor-error-boundary::after { content: "An error has occurred." }