/* Base Design System */
:root {
    --bg-dark: #090a0f;
    --bg-surface: #10121a;
    --bg-surface-glass: rgba(16, 18, 26, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(168, 85, 247, 0.2);
    
    --primary: #a855f7; /* Vibrant Purple */
    --primary-glow: rgba(168, 85, 247, 0.4);
    --secondary: #06b6d4; /* Cyan */
    --success: #10b981; /* Green */
    --warning: #f59e0b; /* Yellow */
    --danger: #ef4444; /* Red */
    
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(168, 85, 247, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(6, 118, 212, 0.08) 0%, transparent 45%);
    background-attachment: fixed;
    color: var(--text-main);
    font-family: var(--font-sans);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Glassmorphism utility */
.glass {
    background: var(--bg-surface-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.hidden {
    display: none !important;
}

/* ----------------- LOGIN VIEW ----------------- */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-card {
    padding: 48px 32px;
    border-radius: 24px;
    text-align: center;
    max-width: 420px;
    width: 100%;
    border: 1px solid rgba(168, 85, 247, 0.15);
    box-shadow: 0 0 40px rgba(168, 85, 247, 0.05);
}

.login-logo-icon {
    width: 64px;
    height: 64px;
    color: var(--primary);
    margin-bottom: 24px;
    filter: drop-shadow(0 0 12px var(--primary-glow));
    transform: rotate(45deg);
}

.login-card h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #ffffff 30%, #c084fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 36px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
    border: none;
    border-radius: 12px;
    color: white;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    padding: 14px 28px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 20px var(--primary-glow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(168, 85, 247, 0.6);
}

.btn-primary:active {
    transform: translateY(0);
}

.error-text {
    color: var(--danger);
    font-size: 0.85rem;
    margin-top: 16px;
}

/* ----------------- DASHBOARD VIEW ----------------- */
.app-container {
    padding: 24px;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
    flex-grow: 1;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--primary);
    transform: rotate(45deg);
    filter: drop-shadow(0 0 8px var(--primary-glow));
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-text p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.header-user {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.03);
    padding: 6px 14px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
}

.user-photo {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--primary);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-name {
    font-size: 0.9rem;
    font-weight: 600;
}

.btn-logout {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: color 0.2s;
}

.btn-logout:hover {
    color: var(--danger);
}

/* Grid Layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 24px;
    flex-grow: 1;
}

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.panel-left, .panel-right {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Card base */
.card {
    border-radius: 20px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

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

.header-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-title h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.badge {
    background: rgba(168, 85, 247, 0.15);
    border: 1px solid var(--primary);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 12px;
    text-transform: uppercase;
}

/* Decision Card */
.decision-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.3;
}

.workout-description {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.workout-meta {
    display: flex;
    gap: 32px;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
    margin-top: 8px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.meta-item i {
    width: 20px;
    height: 20px;
    color: var(--primary);
}

.meta-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.meta-val {
    font-size: 0.9rem;
    font-weight: 600;
}

/* Metrics Row */
.metrics-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 16px;
}

.metric-card {
    padding: 16px;
    gap: 8px;
}

.metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
}

.metric-title {
    font-size: 0.8rem;
    font-weight: 600;
}

.metric-icon {
    width: 16px;
    height: 16px;
}

.ctl-card .metric-icon { color: var(--secondary); }
.atl-card .metric-icon { color: var(--danger); }
.tsb-card .metric-icon { color: var(--success); }

.metric-value {
    font-size: 1.8rem;
    font-weight: 800;
}

.metric-desc {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* Weekly Schedule */
.schedule-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.schedule-item {
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    transition: background-color 0.2s, border-color 0.3s, box-shadow 0.3s;
    overflow: hidden;
}

.schedule-item:hover {
    background: rgba(255, 255, 255, 0.04);
}

.schedule-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    cursor: pointer;
    width: 100%;
    user-select: none;
}

.schedule-day-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.schedule-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.schedule-name {
    font-size: 0.9rem;
    font-weight: 600;
}

.schedule-badges {
    display: flex;
    align-items: center;
    gap: 8px;
}

.chevron-icon {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    transition: transform 0.3s ease, color 0.3s ease;
}

.schedule-item.is-expanded {
    border-color: rgba(168, 85, 247, 0.3);
    background: rgba(168, 85, 247, 0.02);
    box-shadow: 0 4px 20px rgba(168, 85, 247, 0.05);
}

.schedule-item.is-expanded .chevron-icon {
    transform: rotate(180deg);
    color: var(--primary);
}

.schedule-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
    padding: 0 16px;
}

.schedule-item.is-expanded .schedule-details {
    max-height: 600px;
    padding: 12px 16px 16px 16px;
    border-top: 1px dashed var(--border-color);
}

.schedule-desc {
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--text-muted);
}

.type-badge {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
}

.type-badge.cycling { color: var(--primary); background: rgba(168, 85, 247, 0.1); }
.type-badge.running { color: var(--secondary); background: rgba(6, 182, 212, 0.1); }
.type-badge.strength { color: var(--success); background: rgba(16, 185, 129, 0.1); }
.type-badge.mobility { color: var(--warning); background: rgba(245, 158, 11, 0.1); }
.type-badge.rest { color: var(--text-muted); background: rgba(255, 255, 255, 0.05); }

/* Chart Container */
.chart-container {
    height: 250px;
    position: relative;
}

.chart-legend {
    display: flex;
    gap: 16px;
    font-size: 0.75rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.legend-color {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.legend-color.ctl { background: var(--secondary); }
.legend-color.atl { background: var(--danger); }
.legend-color.tsb { background: var(--success); }

/* Chatbot UI */
.chat-card-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-height: 380px;
    height: 450px;
}

.header-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--success);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

.chat-body {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 0;
}

.chat-messages {
    flex-grow: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 0.88rem;
    line-height: 1.45;
}

.message.coach {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.message.user {
    background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.chat-input-area {
    display: flex;
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.2);
    gap: 12px;
}

.chat-input-area input {
    flex-grow: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px 16px;
    color: white;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.chat-input-area input:focus {
    border-color: var(--primary);
}

.btn-send {
    background: var(--primary);
    border: none;
    border-radius: 12px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-send:hover {
    background: #8b5cf6;
}

/* ----------------- WORKOUT VISUAL PROFILE ----------------- */
.workout-visual-profile {
    margin-top: 16px;
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.workout-profile-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 4px;
    font-weight: 600;
}

.workout-profile-bars {
    display: flex;
    align-items: flex-end;
    height: 80px;
    gap: 2px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 6px;
    padding: 4px;
    overflow: visible; /* Allow tooltips to overflow upward */
}

.workout-profile-bar {
    height: 100%;
    border-radius: 3px;
    position: relative;
    transition: opacity 0.2s;
    cursor: pointer;
}

.workout-profile-bar:hover {
    opacity: 0.85;
}

/* Tooltip on hover */
.workout-profile-bar .bar-tooltip {
    visibility: hidden;
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 11px;
    white-space: nowrap;
    z-index: 99;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s, visibility 0.15s;
}

.workout-profile-bar:hover .bar-tooltip {
    visibility: visible;
    opacity: 1;
}

.workout-profile-timeline {
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    color: var(--text-muted);
    padding: 0 4px;
}

/* Feedback Form Styles */
.feedback-section {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.feedback-divider {
    border: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin: 8px 0;
}

.feedback-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--secondary);
    margin: 0;
}

.feedback-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.form-group select,
.form-group textarea {
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px;
    color: var(--text-color);
    font-family: inherit;
    font-size: 0.8rem;
    outline: none;
    transition: border-color 0.2s;
}

.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--secondary);
}

.rpe-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    margin: 12px 0;
}

.rpe-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--secondary);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(168, 85, 247, 0.5);
    transition: transform 0.1s;
}

.rpe-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.8rem;
    align-self: flex-start;
    display: flex;
    align-items: center;
    gap: 6px;
}

.feedback-success {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--success);
    font-size: 0.8rem;
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 10px 14px;
    border-radius: 6px;
}