:root {
    --watch-bg: #000000;
    --watch-text: #ffffff;
    --accent-color: #ff9500; /* Orange-ish like generic watch apps or maybe blue */
    --item-bg: #1c1c1e; /* Dark gray for list items */
    --screen-width: 368px; /* 44mm watch */
    --screen-height: 448px;
    --bezel: 20px;
}

body {
    background-color: #f0f0f0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.presentation-container {
    display: flex;
    gap: 50px;
    align-items: center;
}

#watch-case {
    position: relative;
    width: calc(var(--screen-width) + var(--bezel) * 2);
    height: calc(var(--screen-height) + var(--bezel) * 2);
    background-color: #1a1a1a;
    border-radius: 50px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
    display: flex;
    justify-content: center;
    align-items: center;
}

#watch-screen {
    width: var(--screen-width);
    height: var(--screen-height);
    background-color: var(--watch-bg);
    color: var(--watch-text);
    border-radius: 40px; /* Screen corner radius */
    overflow: hidden;
    position: relative;
    font-size: 18px;
}

#digital-crown {
    position: absolute;
    right: -18px;
    top: 100px;
    width: 20px;
    height: 50px;
    background: linear-gradient(to right, #333, #666, #333);
    border-radius: 5px;
}

#side-button {
    position: absolute;
    right: -8px;
    top: 170px;
    width: 8px;
    height: 80px;
    background-color: #333;
    border-radius: 4px;
}

/* Screens */
.screen {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    padding: 10px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: opacity 0.3s ease;
}

.screen.hidden {
    opacity: 0;
    pointer-events: none;
    z-index: -1;
}

.screen.active {
    opacity: 1;
    z-index: 1;
}

/* Generic Hidden */
.hidden {
    display: none !important;
}

/* Common Elements */
.header {
    font-size: 22px;
    font-weight: 600;
    margin-top: 10px;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.header-small {
    font-size: 18px;
    color: #aaa;
    margin-top: 5px;
    margin-bottom: 10px;
}

/* Menu */
.menu-list {
    width: 100%;
    overflow-y: auto;
    flex: 1;
    padding-bottom: 20px;
}

.menu-item {
    width: 100%;
    background-color: var(--item-bg);
    border: none;
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    color: white;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.2s;
}

.menu-item:active {
    background-color: #3a3a3c;
}

.icon {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    margin-right: 15px;
    background-color: gray;
}

.challenge-icon { background-color: #34c759; } /* Green */
.fear-icon { background-color: #ff3b30; } /* Red */
.passive-icon { background-color: #5856d6; } /* Purple */
.progress-icon { background-color: #ff9500; } /* Orange */
.settings-icon { background-color: #8e8e93; } /* Gray */

.label {
    font-weight: 500;
    font-size: 18px;
}

/* Picker */
.picker-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
    width: 100%;
    background-color: #000;
    position: relative;
    /* 3D Effect Mask */
    mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 80%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 80%, transparent 100%);
}

.picker-column {
    height: 150px;
    width: 70px;
    overflow-y: scroll;
    scroll-snap-type: y mandatory;
    text-align: center;
    margin: 0 5px;
    scroll-behavior: smooth;
}

/* Hide scrollbar */
.picker-column::-webkit-scrollbar {
    display: none;
}

.picker-item {
    height: 50px;
    line-height: 50px;
    font-size: 28px;
    scroll-snap-align: center;
    color: #888;
}

.picker-item.selected {
    color: white;
    font-weight: bold;
}

.picker-label {
    font-size: 18px;
    margin-top: 10px;
    color: var(--accent-color);
}

.action-button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 25px;
    padding: 12px 40px;
    font-size: 18px;
    font-weight: 600;
    margin-top: 20px;
    width: 90%;
    cursor: pointer;
}

.action-button:active {
    opacity: 0.8;
}

.text-button {
    background: none;
    border: none;
    color: #aaa;
    font-size: 16px;
    margin-top: 10px;
    cursor: pointer;
}

.text-button:active {
    color: white;
}

.stop-btn {
    background-color: #ff3b30;
}

/* Config Stepper */
.config-value-display {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#config-value {
    font-size: 48px;
    font-weight: 700;
    color: white;
}

#config-label {
    font-size: 16px;
    color: #aaa;
}

.stepper-controls {
    display: flex;
    justify-content: space-between;
    width: 80%;
    margin-bottom: 20px;
}

.stepper-btn {
    width: 50px;
    height: 50px;
    border-radius: 25px;
    background-color: #333;
    color: white;
    font-size: 24px;
    border: none;
    cursor: pointer;
}

.stepper-btn:active {
    background-color: #555;
}

/* Session Screen styles */
#session-content {
    width: 100%;
    height: 100%;
}

#session-challenge-container, #session-passive-container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.session-state {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.large-time {
    font-size: 64px;
    font-weight: 200;
    color: white;
    margin-bottom: 20px;
}

.large-text {
    font-size: 36px;
    font-weight: 500;
    color: white;
}

.instruction-text {
    font-size: 18px;
    color: var(--accent-color);
    margin-top: 10px;
}

/* Feedback */
#challenge-feedback {
    background-color: #000; /* will change based on error */
}

.feedback-main {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 10px;
}

.feedback-sub {
    font-size: 32px;
    font-weight: 400;
    color: #ddd;
}

/* Summary */
.summary-stat {
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 10px 20px;
    border-bottom: 1px solid #333;
}

.stat-label {
    color: #aaa;
}

.stat-value {
    color: white;
    font-weight: 600;
}

.passive-status {
    font-size: 24px;
    color: var(--accent-color);
    margin-bottom: 30px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 0.5; }
    50% { opacity: 1; }
    100% { opacity: 0.5; }
}

/* Progress */
.progress-list, .settings-list {
    width: 100%;
    flex: 1;
    overflow-y: auto;
    padding: 10px 0;
}

.progress-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--item-bg);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 8px;
}

.progress-label {
    color: white;
    font-size: 18px;
}

.progress-value {
    color: var(--accent-color);
    font-size: 24px;
    font-weight: 600;
}

.progress-chart-placeholder {
    width: 100%;
    height: 150px;
    background-color: var(--item-bg);
    border-radius: 10px;
    margin-bottom: 15px;
    display: flex;
    justify-content: space-around;
    align-items: flex-end;
    padding: 10px;
    box-sizing: border-box;
}

.chart-bar {
    width: 15px;
    background-color: var(--accent-color);
    border-radius: 3px;
}

.history-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 15px;
    border-bottom: 1px solid #333;
    color: #aaa;
}

.history-score {
    color: white;
    font-weight: bold;
}

/* Settings */
.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--item-bg);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 8px;
}

.setting-label {
    color: white;
    font-size: 18px;
}

.toggle {
    width: 50px;
    height: 30px;
    background-color: #333;
    border-radius: 15px;
    position: relative;
    cursor: pointer;
    transition: background-color 0.3s;
}

.toggle.active {
    background-color: #34c759;
}

.toggle::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 26px;
    height: 26px;
    background-color: white;
    border-radius: 50%;
    transition: transform 0.3s;
}

.toggle.active::after {
    transform: translateX(20px);
}