:root {
    --bg: #0f172a; /* Slate 900 */
    --panel: #1e293b; /* Slate 800 */
    --primary: #3b82f6; /* Blue 500 */
    --success: #10b981; /* Emerald 500 */
    --danger: #ef4444; /* Red 500 */
    --text: #f8fafc; /* Slate 50 */
    --text-muted: #94a3b8; /* Slate 400 */
    --border: #334155; /* Slate 700 */
    --border-light: #475569; /* Slate 600 */
    
    --agent-bg: rgba(59, 130, 246, 0.1);
    --agent-border: rgba(59, 130, 246, 0.2);
    --agent-text: #93c5fd;
    
    --kunde-bg: rgba(16, 185, 129, 0.1);
    --kunde-border: rgba(16, 185, 129, 0.2);
    --kunde-text: #6ee7b7;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 40px 20px;
    line-height: 1.5;
}

h1 {
    text-align: center;
    color: #fff;
    margin-bottom: 40px;
    font-size: 2.2rem;
    font-weight: 700;
}

.container {
    max-width: 850px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.transcript-card {
    background: var(--panel);
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    overflow: hidden;
    transition: border-color 0.2s;
}

.transcript-card:hover {
    border-color: var(--border-light);
}

.card-header {
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background: var(--panel);
    transition: background-color 0.2s;
}

.card-header:hover {
    background-color: rgba(255, 255, 255, 0.03);
}

.header-left {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.header-left h3 {
    margin: 0;
    color: #fff;
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.date {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.expand-icon {
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.transcript-card.expanded .expand-icon {
    transform: rotate(180deg);
}

.dialog-container {
    display: none;
    border-top: 1px solid var(--border);
    background: rgba(0,0,0,0.15);
    padding: 24px;
    max-height: 500px;
    overflow-y: auto;
}

.transcript-card.expanded .dialog-container {
    display: block;
    animation: fadeIn 0.3s ease;
}

.dialog-line {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
}

.dialog-line:last-child {
    margin-bottom: 0;
}

.speaker-name {
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.agent-line .speaker-name {
    color: var(--agent-text);
}

.kunde-line .speaker-name {
    color: var(--kunde-text);
}

.text-content {
    color: #e2e8f0;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.95rem;
    max-width: 90%;
    line-height: 1.6;
}

.agent-line .text-content {
    background: var(--agent-bg);
    border: 1px solid var(--agent-border);
    border-top-left-radius: 2px;
}

.kunde-line .text-content {
    background: var(--kunde-bg);
    border: 1px solid var(--kunde-border);
    border-top-left-radius: 2px;
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 60px 20px;
    background: var(--panel);
    border-radius: 12px;
    border: 1px dashed var(--border);
}

/* Custom Scrollbar for dialogs */
.dialog-container::-webkit-scrollbar {
    width: 6px;
}
.dialog-container::-webkit-scrollbar-track {
    background: transparent;
}
.dialog-container::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 10px;
}
.dialog-container::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Login elements */
.login-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.98);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.login-box {
    background: var(--panel);
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid var(--border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    width: 320px;
}

.login-box h2 {
    color: #fff;
    margin-top: 0;
    font-size: 1.8rem;
}

.login-box p {
    color: var(--text-muted);
    margin-bottom: 25px;
    font-size: 0.95rem;
}

.login-box input {
    width: 100%;
    padding: 12px;
    background: #000;
    border: 1px solid var(--border);
    color: white;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: center;
    box-sizing: border-box;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.login-box input:focus {
    outline: none;
    border-color: var(--primary);
}

.login-box button {
    width: 100%;
    padding: 12px;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.login-box button:hover {
    background: #2563eb;
}

.login-box button:active {
    transform: scale(0.98);
}

.login-error {
    color: var(--danger);
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 15px;
    display: none;
    animation: fadeIn 0.3s ease;
}

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