:root {
    --bg-base: #0F172A;
    --bg-surface: #1E293B;
    --bg-elevated: #334155;
    --border: #475569;
    
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    
    --brand-primary: #EF4444; /* Red */
    --brand-primary-hover: #DC2626;
    --brand-accent: #F59E0B; /* Amber */
    
    --success: #10B981;
    --danger: #EF4444;
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 24px;
    
    --font-heading: 'Inter', system-ui, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-heading);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.app-container {
    width: 100%;
    max-width: 600px;
    height: 100%;
    max-height: 900px;
    display: flex;
    flex-direction: column;
    background: var(--bg-surface);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border);
}

@media (min-width: 640px) {
    .app-container {
        height: 95vh;
        border-radius: var(--radius-lg);
    }
}

/* Header */
.app-header {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--brand-accent);
}

.header-logo i { width: 24px; height: 24px; }
.header-logo h1 { font-size: 1.25rem; font-weight: 700; color: var(--text-primary); }

/* Main Content */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Display Section (Ticker) */
.display-section {
    text-align: center;
    padding: 2.5rem 1rem;
    background: radial-gradient(circle at 50% 0%, rgba(239, 68, 68, 0.15) 0%, transparent 70%);
    border-radius: var(--radius-md);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.ticker-label {
    color: var(--brand-accent);
    font-size: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.ticker-value {
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    font-family: var(--font-mono);
    line-height: 1;
    text-shadow: 0 0 20px rgba(239, 68, 68, 0.4);
}

.ticker-sub {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.75rem;
    font-family: var(--font-mono);
}

/* Controls */
.controls-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.time-display {
    font-size: 2rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

.btn-group {
    display: flex;
    gap: 0.5rem;
    background: rgba(0,0,0,0.2);
    padding: 0.5rem;
    border-radius: var(--radius-md);
}

/* Roles Section */
.roles-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-header h2 {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 600;
}

.attendees-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.attendee-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    transition: background 0.2s;
}

.attendee-item:hover { background: rgba(255,255,255,0.06); }

.attendee-info {
    display: flex;
    flex-direction: column;
}

.attendee-role { font-weight: 600; font-size: 0.9rem; }
.attendee-salary { font-size: 0.75rem; color: var(--text-secondary); font-family: var(--font-mono); }

.attendee-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.count-display {
    width: 2ch;
    text-align: center;
    font-weight: 600;
    font-family: var(--font-mono);
}

.quick-add-roles {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.quick-add-btn {
    background: transparent;
    border: 1px dashed var(--border);
    color: var(--text-secondary);
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.quick-add-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
    background: rgba(255,255,255,0.05);
}

.quick-add-btn i { width: 14px; height: 14px; }

/* Stats */
.stats-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.stats-section h3 {
    font-size: 1rem;
    color: var(--text-secondary);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.stat-card {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
    padding: 1rem;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.5rem;
}

.stat-label { font-size: 0.7rem; color: var(--text-secondary); text-transform: uppercase; }
.stat-val { font-size: 1rem; font-weight: 600; font-family: var(--font-mono); color: var(--brand-accent); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    font-family: inherit;
}

.btn-small { padding: 0.4rem 0.75rem; font-size: 0.75rem; }

.btn i { width: 18px; height: 18px; }

.btn-primary { background: var(--brand-primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--brand-primary-hover); transform: translateY(-1px); }

.btn-secondary { background: var(--bg-elevated); color: var(--text-primary); }
.btn-secondary:hover:not(:disabled) { background: #475569; }

.btn-danger { background: rgba(239, 68, 68, 0.1); color: var(--danger); border: 1px solid rgba(239, 68, 68, 0.2); }
.btn-danger:hover:not(:disabled) { background: rgba(239, 68, 68, 0.2); }

.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.25rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}
.btn-icon:hover { background: var(--bg-elevated); color: var(--text-primary); }

/* Modals */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 1;
    transition: opacity 0.3s;
}

.modal.hidden { opacity: 0; pointer-events: none; }

.modal-content {
    background: var(--bg-surface);
    width: 90%;
    max-width: 400px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
}

.modal-content.large { max-width: 500px; max-height: 80vh; }

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 { font-size: 1.1rem; }

.modal-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    overflow-y: auto;
}

.modal-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    display: flex;
    justify-content: flex-end;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label { font-size: 0.875rem; color: var(--text-secondary); }
.form-group input {
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border);
    padding: 0.75rem;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    outline: none;
}
.form-group input:focus { border-color: var(--brand-accent); }

/* History List */
.history-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.history-item {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
    padding: 1rem;
    border-radius: var(--radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.history-item-details { display: flex; flex-direction: column; gap: 0.25rem; }
.history-date { font-size: 0.75rem; color: var(--text-secondary); }
.history-duration { font-size: 0.9rem; font-family: var(--font-mono); }
.history-cost { font-size: 1.25rem; font-weight: 700; color: var(--brand-primary); font-family: var(--font-mono); }