/* ============================================
   Parent + Child — Attachment Co-Regulation
   Warm, nurturing, soft aesthetic
   ============================================ */

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

:root {
    --bg-dark: #1a1520;
    --bg-card: #241e2a;
    --bg-hover: #2e2636;
    
    --parent-color: #b794f6;
    --parent-dim: rgba(183, 148, 246, 0.15);
    --parent-glow: rgba(183, 148, 246, 0.4);
    
    --child-color: #fbd38d;
    --child-dim: rgba(251, 211, 141, 0.15);
    --child-glow: rgba(251, 211, 141, 0.4);
    
    --connection: #ff9ff3;
    --connection-dim: rgba(255, 159, 243, 0.2);
    
    --text-primary: #f7f0ff;
    --text-secondary: rgba(247, 240, 255, 0.7);
    --text-muted: rgba(247, 240, 255, 0.4);
    
    --font-display: 'Quicksand', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    
    --radius: 20px;
    --radius-sm: 12px;
    --transition: 0.4s ease;
}

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

.app-container {
    width: 100%;
    min-height: 100vh;
    background: radial-gradient(ellipse at 50% 100%, #2a1f35 0%, var(--bg-dark) 60%);
}

/* Screens */
.screen {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s ease;
}

.screen.active {
    opacity: 1;
    visibility: visible;
}

.screen-content {
    max-width: 420px;
    width: 100%;
    padding: 40px 20px;
    text-align: center;
}

/* Logo */
.logo {
    margin-bottom: 30px;
}

.logo-icon {
    font-size: 2rem;
    color: var(--connection);
    opacity: 0.8;
}

/* Welcome */
.welcome-title {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--parent-color) 0%, var(--child-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

/* Role Selection */
.role-options {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 30px;
}

.role-btn {
    background: var(--bg-card);
    border: 2px solid transparent;
    border-radius: var(--radius);
    padding: 24px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    transition: all var(--transition);
}

.role-btn:hover {
    transform: translateY(-3px);
}

.parent-btn:hover {
    border-color: var(--parent-color);
    box-shadow: 0 10px 40px var(--parent-dim);
}

.child-btn:hover {
    border-color: var(--child-color);
    box-shadow: 0 10px 40px var(--child-dim);
}

.role-orb {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    animation: gentle-pulse 3s ease-in-out infinite;
}

.parent-orb {
    background: radial-gradient(circle, var(--parent-color) 0%, var(--parent-dim) 70%);
    box-shadow: 0 0 30px var(--parent-glow);
}

.child-orb {
    background: radial-gradient(circle, var(--child-color) 0%, var(--child-dim) 70%);
    box-shadow: 0 0 30px var(--child-glow);
}

@keyframes gentle-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.role-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.role-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.demo-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Mode Selection */
.setup-title {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 30px;
}

.mode-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 30px;
}

.mode-btn {
    background: var(--bg-card);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    padding: 20px 16px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: all var(--transition);
}

.mode-btn:hover {
    background: var(--bg-hover);
    border-color: var(--connection);
    transform: translateY(-2px);
}

.mode-icon {
    font-size: 2rem;
}

.mode-name {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.mode-time {
    font-size: 0.75rem;
    color: var(--connection);
    margin-top: 4px;
}

.back-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.95rem;
    cursor: pointer;
    padding: 10px 20px;
}

.back-btn:hover {
    color: var(--text-secondary);
}

/* ============================================
   Main Session Experience
   ============================================ */

.session-layout {
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    position: relative;
}

/* Connection Area */
.connection-area {
    position: relative;
    width: 100%;
    max-width: 400px;
    height: 300px;
    margin-bottom: 40px;
}

.person-container {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.parent-container {
    top: 50%;
    left: 10%;
    transform: translateY(-50%);
}

.child-container {
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
}

.person-orb {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    position: relative;
    transition: all 4s ease;
}

.person-orb .orb-glow {
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    opacity: 0.4;
    transition: all 4s ease;
}

.parent-container .orb-glow {
    background: radial-gradient(circle, var(--parent-glow) 0%, transparent 70%);
}

.child-container .orb-glow {
    background: radial-gradient(circle, var(--child-glow) 0%, transparent 70%);
}

.person-orb .orb-core {
    position: absolute;
    inset: 20%;
    border-radius: 50%;
    transition: all 4s ease;
}

.parent-container .orb-core {
    background: var(--parent-color);
    box-shadow: 0 0 30px var(--parent-glow);
}

.child-container .orb-core {
    background: var(--child-color);
    box-shadow: 0 0 30px var(--child-glow);
}

/* Breathing States */
.person-orb.inhale {
    transform: scale(1.3);
}

.person-orb.inhale .orb-glow {
    inset: -20px;
    opacity: 0.6;
}

.person-orb.exhale {
    transform: scale(0.85);
}

.person-orb.exhale .orb-glow {
    inset: -5px;
    opacity: 0.3;
}

.person-label {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* Connection Line */
.connection-line {
    position: absolute;
    top: 50%;
    left: 25%;
    right: 25%;
    height: 4px;
    background: linear-gradient(90deg, var(--parent-color), var(--connection), var(--child-color));
    border-radius: 2px;
    transform: translateY(-50%);
    opacity: 0.3;
    transition: all 0.5s ease;
}

.connection-line.strong {
    opacity: 0.8;
    height: 6px;
    box-shadow: 0 0 20px var(--connection-dim);
}

/* Connection Heart */
.connection-heart {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    opacity: 0;
    transition: all 0.5s ease;
    animation: heart-beat 1s ease-in-out infinite;
    animation-play-state: paused;
}

.connection-heart.visible {
    opacity: 1;
    animation-play-state: running;
}

@keyframes heart-beat {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.2); }
}

/* Guidance */
.guidance-area {
    text-align: center;
    margin-bottom: 30px;
}

.session-mode {
    font-size: 0.9rem;
    color: var(--connection);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 10px;
}

.guidance-text {
    font-family: var(--font-display);
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 15px;
    min-height: 50px;
    transition: opacity 0.5s ease;
}

.breath-instruction {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--connection);
    min-height: 50px;
}

/* Connection Meter */
.connection-meter {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
}

.meter-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.meter-bar {
    flex: 1;
    max-width: 200px;
    height: 8px;
    background: var(--bg-card);
    border-radius: 4px;
    overflow: hidden;
}

.meter-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--parent-color), var(--connection), var(--child-color));
    width: 0%;
    transition: width 0.5s ease;
    border-radius: 4px;
}

.meter-value {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--connection);
    min-width: 50px;
}

/* Controls */
.session-controls {
    position: absolute;
    bottom: 30px;
}

.control-btn {
    background: transparent;
    border: 1px solid var(--text-muted);
    color: var(--text-muted);
    padding: 10px 24px;
    border-radius: 25px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition);
}

.control-btn:hover {
    border-color: var(--text-secondary);
    color: var(--text-secondary);
}

/* Child Waiting */
.waiting-visual {
    margin-bottom: 30px;
}

.waiting-orb {
    width: 120px;
    height: 120px;
    margin: 0 auto;
    border-radius: 50%;
    background: radial-gradient(circle, var(--child-color) 0%, var(--child-dim) 70%);
    box-shadow: 0 0 40px var(--child-glow);
    animation: waiting-pulse 2s ease-in-out infinite;
}

@keyframes waiting-pulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.1); opacity: 1; }
}

.waiting-hint {
    color: var(--text-muted);
    margin-top: 15px;
}

/* Completion */
.complete-hearts {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: heart-beat 1.5s ease-in-out infinite;
}

.complete-title {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--parent-color) 0%, var(--child-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.complete-message {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.session-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 30px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--connection);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.complete-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--parent-color) 0%, var(--child-color) 100%);
    color: var(--bg-dark);
    border: none;
    padding: 16px 48px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-primary:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 40px var(--connection-dim);
}

.btn-secondary {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.95rem;
    cursor: pointer;
    padding: 10px 20px;
}

.btn-secondary:hover {
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 480px) {
    .mode-options {
        grid-template-columns: 1fr;
    }
    
    .person-orb {
        width: 80px;
        height: 80px;
    }
    
    .parent-container { left: 5%; }
    .child-container { right: 5%; }
    
    .guidance-text {
        font-size: 1.2rem;
    }
    
    .breath-instruction {
        font-size: 1.6rem;
    }
}