html {
    background-color: #0d0d0d;
    color: #f0f0f0;
}

:root {
    --bg-primary: #0d0d0d; --bg-secondary: #1a1a1a; --bg-card: #1f1f1f; --bg-input: #2a2a2a;
    --text-primary: #e0e0e0; --text-secondary: #9e9e9e; --text-placeholder: #757575;
    --accent-primary: #007bff; --accent-primary-rgb: 0, 123, 255; --accent-primary-darker: #0056b3;
    --accent-secondary: #4CAF50; --accent-secondary-darker: #388E3C; --accent-red: #e53935;
    --accent-red-darker: #c62828; --accent-green: #28a745;
    
    --mood-happy-color: #FFD700;
    --mood-neutral-color: #B0C4DE;
    --mood-distressed-color: #FF6347;

    --border-color: #383838; --border-light: #2c2c2c; --border-radius: 8px; --border-radius-small: 5px;
    --shadow-subtle: 0 1px 3px rgba(0,0,0,0.2); --shadow-medium: 0 3px 8px rgba(0,0,0,0.25);
    --shadow-focus: 0 0 0 2px rgba(var(--accent-primary-rgb), 0.25);
    --transition-fast: 0.15s ease-out; --transition-smooth: 0.3s ease-in-out;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }
@keyframes flash-animation { 0%, 100% { background-color: var(--bg-primary); } 50% { background-color: #333; } }
* { box-sizing: border-box; }
body {
    font-family: 'Inter', sans-serif; 
    background-color: var(--bg-primary); 
    color: var(--text-primary);
    margin: 0; padding: 25px; display: flex; flex-direction: column; align-items: center;
    font-weight: 400; line-height: 1.6; -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale; overflow-x: hidden;
}
body.flash { animation: flash-animation 0.3s ease-out; }
.container { width: 100%; max-width: 700px; animation: fadeIn 0.5s ease-out forwards; opacity: 0; }
h1 {
    text-align: center; color: var(--text-primary); font-size: 2em; font-weight: 600;
    margin-bottom: 30px; opacity: 0; animation: fadeInUp 0.6s ease-out 0.2s forwards;
}
h1 i { color: var(--accent-primary); margin-right: 10px; }
.page-section {
    background-color: var(--bg-card); border-radius: var(--border-radius); padding: 25px;
    margin-bottom: 25px; box-shadow: var(--shadow-subtle); opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards; border: 1px solid var(--border-light);
}
#setup-area .page-section { animation-delay: 0.4s; }
#connected-area .page-section:nth-of-type(1) { animation-delay: 0.1s; }
#connected-area .page-section:nth-of-type(2) { animation-delay: 0.2s; }
#connected-area .page-section:nth-of-type(3) { animation-delay: 0.3s; }
#connected-area .page-section:nth-of-type(4) { animation-delay: 0.4s; }
#connected-area.visible {
    display: block !important;
    opacity: 1 !important;
}
.section-header {
    display: flex; align-items: center; gap: 12px; margin-bottom: 20px; font-size: 1.2em;
    color: var(--text-primary); font-weight: 500; border-bottom: 1px solid var(--border-color); padding-bottom: 12px;
}
.section-header i { color: var(--accent-primary); font-size: 1.1em; }
.section-header h2 { margin: 0; font-size: inherit; font-weight: inherit; }
.section-content p:first-of-type { margin-top: 0; } .section-content p:last-of-type { margin-bottom: 0; }
.form-group { margin-bottom: 25px; }
.form-group label {
    display: block; margin-bottom: 8px; font-size: 0.95em; font-weight: 600; color: var(--text-primary);
    text-transform: uppercase; letter-spacing: 0.5px;
}
.form-group input[type="text"], .form-group input[type="password"], .form-group input[type="email"] {
    width: 100%; padding: 12px 15px; border-radius: 8px;
    background: var(--bg-input); color: var(--text-primary); border: 2px solid var(--border-color);
    font-size: 1em; transition: all var(--transition-smooth); position: relative;
}
.form-group input:focus { 
    outline: none; border-color: var(--accent-primary); 
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.2), 0 4px 12px rgba(0, 123, 255, 0.1); 
    transform: translateY(-2px);
}
.help-text { display: block; margin-top: 6px; font-size: 0.85em; color: var(--text-secondary); font-style: italic; }
.button {
    background-color: var(--accent-primary); color: white; border: none; padding: 12px 20px;
    border-radius: var(--border-radius-small); cursor: pointer; font-size: 0.95em; font-weight: 500;
    transition: filter var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);
    display: inline-flex; align-items: center; justify-content: center; gap: 8px; text-decoration: none;
}
.button.button-small { padding: 8px 12px; font-size: 0.85em; }
#join-session, #disconnect { width: 100%; margin-top: 10px; }
#disconnect { background-color: #545b62; }
#disconnect:hover:not(:disabled) { filter: brightness(1.1); }
.button:hover:not(:disabled) { filter: brightness(1.15); transform: translateY(-1px); }
.button:active:not(:disabled) { filter: brightness(0.9); transform: translateY(0px) scale(0.99); }
.button:disabled { opacity: 0.5; cursor: not-allowed; }
.button i { margin-right: 5px; line-height: 1; }
.card {
    background-color: var(--bg-secondary); padding: 18px; border-radius: var(--border-radius-small);
    margin-top: 20px; border-left: 4px solid var(--accent-secondary); box-shadow: var(--shadow-subtle);
}
.card-header {
    font-weight: 600; margin-bottom: 12px; color: var(--text-primary); font-size: 1em;
    display: flex; align-items: center; gap: 8px;
}
.card p { font-size: 0.85em; color: var(--text-secondary); margin-bottom: 8px; line-height: 1.5; }
.card p:last-child { margin-bottom: 0; }
.back-link {
    display: inline-flex; align-items: center; gap: 6px; margin-top: 30px; color: var(--text-secondary);
    font-size: 0.9em; text-decoration: none; opacity: 0; animation: fadeIn 0.5s ease-out 1s forwards;
}
.back-link:hover { color: var(--accent-primary); } .back-link i { font-size: 0.9em; }

.mood-selector { display: flex; justify-content: space-around; margin: 20px 0; gap: 15px; }
.mood-option { 
    flex: 1; text-align: center; cursor: pointer; padding: 15px 10px; border-radius: var(--border-radius);
    border: 2px solid transparent; background-color: var(--bg-secondary);
    transition: transform var(--transition-fast), background-color var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-fast);
    opacity: 0; animation: scaleIn 0.5s ease-out forwards;
}
.mood-selector .mood-option:nth-child(1) { animation-delay: 0.2s; }
.mood-selector .mood-option:nth-child(2) { animation-delay: 0.3s; }
.mood-selector .mood-option:nth-child(3) { animation-delay: 0.4s; }
.mood-option:hover { transform: translateY(-3px); box-shadow: var(--shadow-medium); }
.mood-option.selected { transform: translateY(-2px) scale(1.02); box-shadow: var(--shadow-medium); }
.mood-option i { margin-bottom: 8px; font-size: 1.8em; transition: color var(--transition-smooth); }
.mood-option p { margin: 0; font-size: 0.85em; font-weight: 500; color: var(--text-secondary); transition: color var(--transition-smooth); }

.mood-option.happy i { color: var(--mood-happy-color); }
.mood-option.neutral i { color: var(--mood-neutral-color); }
.mood-option.distressed i { color: var(--mood-distressed-color); }

#toggle-more-moods-btn {
    margin-top: 15px;
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}
#toggle-more-moods-btn i {
    transition: transform 0.3s ease-in-out;
}
#toggle-more-moods-btn.expanded i {
    transform: rotate(180deg);
}
.additional-moods-collapsible {
    max-height: 0;
    overflow-y: auto;
    transition: max-height 0.35s ease-in-out, padding-top 0.35s ease-in-out, padding-bottom 0.35s ease-in-out, margin-top 0.35s ease-in-out, border-width 0.35s ease-in-out;
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius-small);
    margin-top: 0; 
    padding-top: 0; padding-bottom: 0;
    border: 0px solid var(--border-light);
}
.additional-moods-collapsible.expanded {
    max-height: 250px;
    margin-top: 15px;
    padding-top: 10px; padding-bottom: 10px;
    border-width: 1px;
}
.additional-moods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    padding: 0 10px;
}
.additional-mood-option {
    padding: 10px;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    text-align: center;
    font-size: 0.9em;
    font-weight: 500;
    background-color: var(--bg-input);
    color: var(--text-secondary);
    border: 2px solid transparent;
    transition: transform var(--transition-fast), background-color var(--transition-smooth), border-color var(--transition-smooth), color var(--transition-smooth), box-shadow var(--transition-fast);
}
.additional-mood-option:hover:not(.selected) {
    transform: translateY(-2px);
    background-color: #333;
}
.additional-mood-option.selected {
    transform: translateY(-1px) scale(1.01);
    box-shadow: var(--shadow-subtle);
}

#last-interaction {
    background-color: var(--bg-secondary); padding: 15px; border-radius: var(--border-radius-small);
    border: 1px solid var(--border-color);
}
#last-interaction p { margin: 8px 0; font-size: 0.9em; color: var(--text-secondary); }
#last-interaction p strong { color: var(--text-primary); font-weight: 500; min-width: 80px; display: inline-block; }
#last-interaction p span { color: var(--text-primary); }
#waiting-for-interaction { text-align:center; color: var(--text-secondary); font-style: italic; padding: 20px 0; }
.interaction-history {
    max-height: 250px; overflow-y: auto; background-color: var(--bg-secondary); padding: 10px;
    border-radius: var(--border-radius-small); border: 1px solid var(--border-light); margin-top: 15px;
}
.history-item {
    padding: 10px 8px; border-bottom: 1px solid var(--border-color); font-size: 0.85em;
    display: flex; align-items: center; gap: 10px; transition: background-color var(--transition-fast);
    opacity: 0; animation: fadeInUp 0.4s ease-out forwards;
}
.history-item:last-child { border-bottom: none; } .history-item:hover { background-color: rgba(255,255,255,0.03); }
.history-type-icon { font-size: 0.9em; width: 16px; text-align: center; } 
.history-shock-icon { color: var(--accent-red); }
.history-vibrate-icon { color: var(--mood-happy-color); } 
.history-click-icon { color: var(--accent-primary); }
.history-system-icon { color: var(--text-secondary); }
.history-item strong { color: var(--text-secondary); font-weight: 500; }
.history-item span:not(.history-type-icon):not(strong) { color: var(--text-primary); }
.history-item .timestamp { margin-left: auto; font-size: 0.9em; color: var(--text-secondary); }
#connected-area .owner-info h3 { margin: 0 0 10px 0; font-size: 1.1em; font-weight: 500; color: var(--text-primary); }
#connected-area .owner-info h3 span { color: var(--accent-primary); font-weight: 600; }
#connected-area .owner-info p { font-size: 0.9em; color: var(--text-secondary); margin: 5px 0; }
#connected-area #connection-status {
    margin-top: 15px; padding: 10px; border-radius: var(--border-radius-small);
    background-color: rgba(var(--accent-secondary-rgb, 76, 175, 80), 0.1);
    color: var(--accent-secondary); border: 1px solid rgba(var(--accent-secondary-rgb, 76, 175, 80), 0.3);
    font-size: 0.9em; text-align: center;
}
.notification {
    position: fixed; top: -100px; left: 50%; transform: translateX(-50%);
    padding: 15px 25px;
    border-radius: var(--border-radius-small); color: white; box-shadow: var(--shadow-medium);
    z-index: 1000; font-size: 0.95em; font-weight: 500; opacity: 0;
    transition: top var(--transition-smooth), opacity var(--transition-smooth);
    width: clamp(320px, 80vw, 450px);
    line-height: 1.5;
    overflow-wrap: break-word;
    text-align: center;
}
.notification.show { top: 20px; opacity: 1; }
.notification.success { background-color: var(--accent-green); }
.notification.error { background-color: var(--accent-red); }
.notification.warning { background-color: var(--accent-yellow); }
.notification.info { background-color: var(--accent-primary); }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); border-radius: 10px; }
::-webkit-scrollbar-thumb { background: #4f4f4f; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #6d6d6d; }

.session-status-info {
    margin-top: 10px;
    font-size: 0.9em;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.session-status-info i {
    font-size: 0.9em;
}

.session-status-info.locked {
    color: var(--accent-red);
}

.session-status-info.unlocked {
    color: var(--accent-secondary);
}

.session-status-info {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    padding: 8px 12px;
    border-radius: var(--border-radius-small);
    font-size: 0.9em;
    background-color: var(--bg-secondary);
    border-left: 4px solid var(--text-secondary);
    transition: all var(--transition-fast);
}

.session-status-info.locked {
    background-color: rgba(255, 87, 34, 0.1);
    border-left-color: #FF5722;
}

.session-status-info.locked i {
    color: #FF5722;
}

.session-status-info.unlocked {
    background-color: rgba(76, 175, 80, 0.1);
    border-left-color: var(--accent-secondary);
}

.session-status-info.unlocked i {
    color: var(--accent-secondary);
}

.owner-mood-display {
    font-size: 0.8em;
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: 8px;
    display: inline-block;
    vertical-align: middle;
    font-weight: 500;
    border: 1px solid rgba(0,0,0,0.2);
}


.create-custom-mood-btn {
    margin-top: 10px;
    background: linear-gradient(135deg, var(--accent-primary), #0056b3) !important;
    color: white !important;
    border: 1px solid var(--accent-primary) !important;
    width: 100%;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-smooth) !important;
}

.create-custom-mood-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 123, 255, 0.3);
}

.create-custom-mood-btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s;
}

.create-custom-mood-btn:hover:before {
    left: 100%;
}


.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay.show {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: linear-gradient(145deg, var(--bg-card), #1a1a1a);
    border-radius: 12px;
    border: 1px solid var(--accent-primary);
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.8),
        0 0 0 1px rgba(0, 123, 255, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.7) translateY(-50px) rotateX(10deg);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.show .modal-content {
    transform: scale(1) translateY(0) rotateX(0deg);
}

.custom-mood-modal {
    width: 520px;
    max-width: 95vw;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 25px 30px;
    border-bottom: 1px solid rgba(0, 123, 255, 0.3);
    background: linear-gradient(135deg, var(--bg-secondary), #1f1f1f);
    border-radius: 12px 12px 0 0;
    position: relative;
}

.modal-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), #00ff88, var(--accent-primary));
    border-radius: 12px 12px 0 0;
}

.modal-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.3em;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.modal-header h3 i {
    color: var(--accent-primary);
    font-size: 1.2em;
    animation: subtlePulseBorder 2s infinite;
}

.modal-close-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-secondary);
    font-size: 1.3em;
    cursor: pointer;
    padding: 10px;
    border-radius: 8px;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

.modal-close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--accent-red);
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.modal-body {
    padding: 30px;
    background: var(--bg-card);
    overflow-y: auto;
    max-height: 60vh;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 15px;
    padding: 25px 30px;
    border-top: 1px solid rgba(0, 123, 255, 0.3);
    background: linear-gradient(135deg, var(--bg-secondary), #1f1f1f);
    border-radius: 0 0 12px 12px;
}


.color-input-container {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 8px;
    padding: 12px;
    background: rgba(0, 123, 255, 0.05);
    border-radius: 8px;
    border: 1px solid rgba(0, 123, 255, 0.2);
}

.color-input-container input[type="color"] {
    width: 60px;
    height: 45px;
    border: 2px solid var(--accent-primary);
    border-radius: 8px;
    padding: 0;
    background-color: transparent;
    cursor: pointer;
    transition: all var(--transition-smooth);
    overflow: hidden;
}

.color-input-container input[type="color"]:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.color-input-container input[type="text"] {
    flex: 1;
    font-family: 'Courier New', monospace;
    font-weight: bold;
    text-transform: uppercase;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    padding: 10px 12px;
}


.custom-mood-preview {
    margin-top: 15px;
    padding: 20px;
    border-radius: 10px;
    background: var(--bg-input);
    border: 2px solid transparent;
    text-align: center;
    font-weight: 600;
    font-size: 1.1em;
    transition: all var(--transition-smooth);
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.custom-mood-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 1s ease-in-out;
}

.custom-mood-preview:hover::before {
    left: 100%;
}


.button-secondary {
    background: linear-gradient(135deg, var(--bg-input), #2a2a2a) !important;
    color: var(--text-primary) !important;
    border: 2px solid var(--border-color) !important;
    padding: 12px 20px !important;
    font-weight: 600 !important;
    transition: all var(--transition-smooth) !important;
}

.button-secondary:hover {
    background: linear-gradient(135deg, #383838, #404040) !important;
    border-color: var(--accent-primary) !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3) !important;
}

.modal-footer .button:not(.button-secondary) {
    background: linear-gradient(135deg, var(--accent-primary), #0056b3) !important;
    padding: 12px 25px !important;
    font-weight: 600 !important;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3) !important;
    transition: all var(--transition-smooth) !important;
}

.modal-footer .button:not(.button-secondary):hover {
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 25px rgba(0, 123, 255, 0.4) !important;
}


.additional-mood-option.custom-mood {
    position: relative;
    border-left: 3px solid var(--accent-primary);
}

.additional-mood-option.custom-mood::before {
    content: "★";
    position: absolute;
    top: 2px;
    right: 2px;
    font-size: 0.8em;
    color: var(--accent-primary);
    opacity: 0.7;
}

.custom-mood-delete-btn {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--accent-red);
    color: white;
    border: none;
    font-size: 0.7em;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
    z-index: 10;
}

.additional-mood-option.custom-mood:hover .custom-mood-delete-btn {
    display: flex;
    opacity: 1;
}

.custom-mood-delete-btn:hover {
    background-color: var(--accent-red-darker);
    transform: scale(1.1);
}


.custom-mood {
    position: relative;
    border: 1px solid rgba(255, 215, 0, 0.3) !important;
}

.custom-mood-indicator {
    position: absolute;
    top: 2px;
    right: 2px;
    color: #FFD700;
    font-size: 0.7em;
    opacity: 0.8;
}

.delete-custom-mood {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: #e74c3c;
    color: white;
    border: none;
    font-size: 0.7em;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.custom-mood:hover .delete-custom-mood {
    opacity: 1;
}

.delete-custom-mood:hover {
    background-color: #c0392b;
    transform: scale(1.1);
}

@media (max-width: 768px) {
    .custom-mood-modal {
        width: 95vw;
        margin: 20px;
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 15px 20px;
    }
    
    .color-input-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .color-input-container input[type="color"] {
        width: 100%;
        height: 50px;
    }
}