/* ==========================================================================
   Variables and Base Styles
   ========================================================================== */
   :root {
    --color-primary: #1877f2;
    --color-primary-hover: #166fe5;
    --color-primary-disabled: #a0c3f7;
    --color-secondary: #6c757d;
    --color-secondary-hover: #5a6268;
    --color-secondary-disabled: #bdbfbe;
    --color-lock: #ffc107;
    --color-lock-locked: var(--color-secondary);
    --color-lock-text: #333;
    --color-lock-text-locked: white;
    --color-text-primary: #303133;
    --color-text-secondary: #606266;
    --color-text-light: #909399;
    --color-background: #f0f2f5;
    --color-surface: #fff;
    --color-border: #dcdfe6;
    --color-border-light: #e4e7ed;
    --color-placeholder: #999;
    --color-error: #f56c6c; /* Faction Shu */
    --color-success: #67c23a; /* Faction Wu */
    --color-warning: #e6a23c; /* Faction Shen */
    --color-info: #409eff;     /* Faction Wei */
    --color-jin: #b50ff7; /* Faction Jin */

    --faction-color-wu: var(--color-success);
    --faction-color-wei: var(--color-info);
    --faction-color-shu: var(--color-error);
    --faction-color-qun: var(--color-secondary);
    --faction-color-shen: var(--color-warning);
    --faction-color-jin: var(--color-jin);

    --font-family-base: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --border-radius: 8px;
    --border-radius-small: 4px;
    --box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
    --box-shadow-light: 0 1px 3px rgba(0,0,0,0.1);
    --box-shadow-hover: 0 4px 10px rgba(0,0,0,0.15);
    --spacing-unit: 8px;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-base);
    background-color: var(--color-background);
    color: var(--color-text-primary);
    margin: 0;
    padding: calc(var(--spacing-unit) * 2.5); /* 20px */
    line-height: 1.6;
}

.app-header {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 2.5); /* 20px */
}

h1, h2, h3 {
    color: var(--color-text-primary);
    margin-bottom: calc(var(--spacing-unit) * 2); /* 16px */
}

h2 {
    text-align: center;
}

/* Utility class */
.hidden {
    display: none !important;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.button {
    display: inline-block; /* Changed from inline-flex for simplicity unless needed */
    padding: calc(var(--spacing-unit) * 1.25) calc(var(--spacing-unit) * 2.5); /* 10px 20px */
    font-size: 1em;
    font-family: inherit;
    color: var(--color-surface);
    border: none;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    text-align: center;
    vertical-align: middle;
    transition: background-color 0.3s ease, opacity 0.3s ease;
    margin: calc(var(--spacing-unit) * 0.625); /* 5px */
}

.button--primary { background-color: var(--color-primary); }
.button--primary:hover { background-color: var(--color-primary-hover); }
.button--primary:disabled { background-color: var(--color-primary-disabled); cursor: not-allowed; opacity: 0.7; }

.button--secondary { background-color: var(--color-secondary); }
.button--secondary:hover { background-color: var(--color-secondary-hover); }
.button--secondary:disabled { background-color: var(--color-secondary-disabled); cursor: not-allowed; opacity: 0.7; }

.button--lock {
    background-color: var(--color-lock);
    color: var(--color-lock-text);
    padding: var(--spacing-unit) calc(var(--spacing-unit) * 1.25); /* 8px 10px */
    font-size: 0.9em;
    display: inline-flex; /* Keep flex for icon alignment */
    align-items: center;
    gap: calc(var(--spacing-unit) * 0.625); /* 5px */
}
.button--lock.locked {
    background-color: var(--color-lock-locked);
    color: var(--color-lock-text-locked);
}
.button--lock:disabled { background-color: var(--color-secondary-disabled); cursor: not-allowed; opacity: 0.7; }

/* ==========================================================================
   Views General
   ========================================================================== */
.view {
    max-width: 700px;
    margin: calc(var(--spacing-unit) * 2.5) auto; /* 20px auto */
    background-color: var(--color-surface);
    padding: calc(var(--spacing-unit) * 3); /* 24px */
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.view[aria-hidden="true"] {
    display: none;
}

/* ==========================================================================
   Settings View
   ========================================================================== */
.settings-container {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2.5); /* 20px */
}

.pack-selector legend,
.draw-options legend {
    font-weight: bold;
    padding: 0 calc(var(--spacing-unit) * 0.5); /* 4px */
    margin-left: calc(var(--spacing-unit) * 1); /* 8px */
    color: var(--color-text-secondary);
}

.pack-selector,
.draw-options {
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-small);
    padding: calc(var(--spacing-unit) * 2); /* 16px */
}

.pack-selector__list {
    max-height: 250px;
    overflow-y: auto;
    padding: var(--spacing-unit); /* 8px */
    background-color: var(--color-background); /* Light background inside */
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-small);
}

.pack-selector__item {
    display: block;
    margin-bottom: var(--spacing-unit); /* 8px */
    padding: var(--spacing-unit); /* 8px */
    border-radius: var(--border-radius-small);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
}

.pack-selector__item label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: bold;
}

.pack-selector__item input[type="checkbox"] {
    margin-right: var(--spacing-unit); /* 8px */
    flex-shrink: 0;
    height: 1.1em; /* Align better with text */
    width: 1.1em;
}

.pack-selector__description {
    font-size: 0.85em;
    color: var(--color-text-secondary);
    margin-top: calc(var(--spacing-unit) * 0.5); /* 4px */
    padding-left: calc(var(--spacing-unit) * 3); /* 24px - approx checkbox width + margin */
}

.draw-options {
    text-align: center;
}

.draw-options label {
    margin-right: var(--spacing-unit); /* 8px */
    font-weight: bold;
}

#draw-count-input {
    width: 70px;
    padding: calc(var(--spacing-unit) * 0.75) var(--spacing-unit); /* 6px 8px */
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-small);
    text-align: center;
    margin-right: var(--spacing-unit); /* 8px */
    font-size: 1em; /* Ensure consistent size */
}

.pool-status {
    text-align: center;
    margin-top: var(--spacing-unit); /* 8px */
    color: var(--color-text-secondary);
    font-size: 0.9em;
}

/* ==========================================================================
   Selection View & Card Carousel
   ========================================================================== */
.selection-view .selection-container { /* Override default view padding/bg if needed */
    background-color: transparent;
    box-shadow: none;
    padding: 0;
    max-width: 95%; /* Allow wider carousel */
}

.selection-view h2 {
    margin-bottom: var(--spacing-unit); /* Smaller margin before carousel */
}

.card-carousel {
    display: flex;
    overflow-x: auto;
    white-space: nowrap;
    padding: calc(var(--spacing-unit) * 2) 0; /* 16px 0 */
    margin-bottom: calc(var(--spacing-unit) * 2); /* 16px */
    gap: calc(var(--spacing-unit) * 2); /* 16px - Use gap for spacing */
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: #ccc var(--color-background);
    min-height: 180px; /* Prevent collapsing when empty */
}
.card-carousel::-webkit-scrollbar { height: 8px; }
.card-carousel::-webkit-scrollbar-track { background: var(--color-background); border-radius: 4px;}
.card-carousel::-webkit-scrollbar-thumb { background-color: #ccc; border-radius: 4px; }
.card-carousel::-webkit-scrollbar-thumb:hover { background-color: #aaa; }

.card-carousel__placeholder {
    width: 100%;
    text-align: center;
    color: var(--color-placeholder);
    align-self: center; /* Center placeholder vertically */
}

.card-carousel__item {
    display: inline-block; /* Keep inline-block for flex fallback if needed */
    vertical-align: top;
    width: 180px;
    flex-shrink: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: calc(var(--spacing-unit) * 1.5); /* 12px */
    background-color: var(--color-surface);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--box-shadow-light);
    text-align: center;
    white-space: normal; /* Allow text wrap inside */
}

.card-carousel__item:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow-hover);
}

.card-carousel__item img {
    max-width: 90%;
    height: auto;
    max-height: 100px;
    margin-bottom: var(--spacing-unit); /* 8px */
    display: block;
    margin-left: auto;
    margin-right: auto;
    border-radius: var(--border-radius-small);
}

.card-carousel__item-name { font-weight: bold; display: block; margin-bottom: calc(var(--spacing-unit) * 0.5); color: var(--color-text-primary); }
.card-carousel__item-faction { font-size: 0.85em; color: var(--color-text-secondary); }

#btn-cancel-selection {
    display: block;
    margin: calc(var(--spacing-unit) * 2) auto 0 auto;
}

/* ==========================================================================
   Confirmation & Final View (Shared Card Details)
   ========================================================================== */
.confirmation-view,
.final-view {
    position: relative; /* For absolute positioned controls in final view */
    max-width: 650px; /* Adjusted max-width */
}

.confirmation-view h2 {
    margin-bottom: var(--spacing-unit);
}

.confirmation-buttons {
    display: flex;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 2); /* 16px */
    margin-top: calc(var(--spacing-unit) * 3); /* 24px */
}

.final-view {
    padding-top: calc(var(--spacing-unit) * 7.5); /* 60px - Space for controls */
    max-width: 750px;
}

.final-view__controls {
    position: absolute;
    top: calc(var(--spacing-unit) * 2); /* 16px */
    left: calc(var(--spacing-unit) * 2); /* 16px */
    right: calc(var(--spacing-unit) * 2); /* 16px */
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

.card-display-area {
    margin: calc(var(--spacing-unit) * 2) auto; /* 16px */
}
.card-display-area--large .card-details {
    max-width: 700px; /* Allow wider card */
}
.card-display-area--large .card-details__image {
    max-width: 150px;
    max-height: 210px;
}

/* ==========================================================================
   Card Details Component
   ========================================================================== */
.card-details {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: calc(var(--spacing-unit) * 2.5); /* 20px */
    box-shadow: var(--box-shadow);
    margin: 0 auto; /* Center within its area */
    max-width: 550px; /* Default max width */
    text-align: left;
    border-left: 5px solid transparent; /* Base for faction color */
    transition: border-left-color 0.3s ease;
}

.card-details.placeholder {
    text-align: center;
    color: var(--color-placeholder);
    border-left-color: var(--color-border-light);
}
.card-details.placeholder .card-details__basic-info,
.card-details.placeholder .card-details__skills {
    opacity: 0.6;
}

/* Faction Colors */
.card-details[data-faction="蜀"] { border-left-color: var(--faction-color-shu); }
.card-details[data-faction="魏"] { border-left-color: var(--faction-color-wei); }
.card-details[data-faction="吴"] { border-left-color: var(--faction-color-wu); }
.card-details[data-faction="群"] { border-left-color: var(--faction-color-qun); }
.card-details[data-faction="神"] { border-left-color: var(--faction-color-shen); }
.card-details[data-faction="晋"] { border-left-color: var(--faction-color-jin); }

.card-details__basic-info {
    display: flex;
    align-items: flex-start;
    gap: calc(var(--spacing-unit) * 2); /* 16px */
    margin-bottom: calc(var(--spacing-unit) * 2); /* 16px */
    padding-bottom: calc(var(--spacing-unit) * 1.5); /* 12px */
    border-bottom: 1px solid var(--color-border-light);
}

.card-details__image {
    max-width: 100px;
    max-height: 140px;
    height: auto;
    border-radius: var(--border-radius-small);
    flex-shrink: 0;
    display: block; /* Remove extra space below */
}

.card-details__text { flex-grow: 1; }

.card-details__name {
    font-size: 1.6em;
    font-weight: bold;
    margin: 0 0 calc(var(--spacing-unit) * 0.625) 0; /* 5px */
    color: var(--color-text-primary);
}

.card-details__meta {
    font-size: 0.9em;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-unit); /* 8px */
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0 calc(var(--spacing-unit) * 0.625); /* 5px horizontal gap */
}

.card-details__meta span {
    padding-right: calc(var(--spacing-unit) * 0.75); /* 6px - Space before separator */
    margin-right: calc(var(--spacing-unit) * 0.75); /* 6px - Space after separator */
    border-right: 1px solid var(--color-border);
    line-height: 1.2;
    white-space: nowrap; /* Prevent wrapping within a meta item */
}
/* Remove border from the last visible span */
.card-details__meta span:not(.hidden):last-of-type {
    border-right: none;
    margin-right: 0;
    padding-right: 0;
}

.armor-display {
    color: var(--color-info); /* Armor color */
    font-weight: bold;
}
.armor-display i { margin-right: 3px; }

.card-details__pack {
    font-size: 0.8em;
    color: var(--color-text-light);
    margin-top: calc(var(--spacing-unit) * 0.5); /* 4px */
}

.card-details__skills h3 {
    font-size: 1.1em;
    margin: calc(var(--spacing-unit) * 2) 0 var(--spacing-unit) 0; /* 16px 0 8px 0 */
    color: #444;
    border-bottom: 1px solid var(--color-border-light);
    padding-bottom: calc(var(--spacing-unit) * 0.5); /* 4px */
}

.card-details__skill-list {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.card-details__skill-list li {
    margin-bottom: calc(var(--spacing-unit) * 1.5); /* 12px */
    padding-left: var(--spacing-unit); /* 8px */
    border-left: 3px solid var(--color-info); /* Default skill border */
}
/* Match skill border to faction color */
.card-details[data-faction="蜀"] .card-details__skill-list li { border-left-color: var(--faction-color-shu); }
.card-details[data-faction="魏"] .card-details__skill-list li { border-left-color: var(--faction-color-wei); }
.card-details[data-faction="吴"] .card-details__skill-list li { border-left-color: var(--faction-color-wu); }
.card-details[data-faction="群"] .card-details__skill-list li { border-left-color: var(--faction-color-qun); }
.card-details[data-faction="神"] .card-details__skill-list li { border-left-color: var(--faction-color-shen); }
.card-details[data-faction="晋"] .card-details__skill-list li { border-left-color: var(--faction-color-jin); }


.card-details__skill-name {
    font-weight: bold;
    color: var(--color-text-primary);
    display: block;
    margin-bottom: 3px;
}

.card-details__skill-description {
    font-size: 0.9em;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  50% { transform: translateX(4px); }
  75% { transform: translateX(-4px); }
}

.shake-animation {
    animation: shake 0.4s ease-in-out;
}