/* Split-screen Card Layout for Persona Gatekeeper */
#personaSelection {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at center, var(--bg-color) 0%, rgba(0,0,0,0.8) 100%);
    font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
}

#personaSelection.hidden {
    display: none !important;
}

.persona-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: rgba(0, 0, 0, 0.4);
    color: var(--text-color);
    border: 1px solid var(--glass-border);
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 100;
    backdrop-filter: blur(5px);
}

.persona-close:hover {
    background: var(--error-color);
    border-color: var(--error-color);
    transform: rotate(90deg);
}

.persona-title-container {
    text-align: center;
    margin-bottom: 4rem;
    z-index: 10;
}

.persona-title-container h1 {
    color: var(--text-color);
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.8);
}

.persona-title-container h2 {
    color: var(--main-color);
    font-size: 1.2rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 4px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
}

/* Split Cards Container */
.persona-split-cards {
    display: flex;
    gap: 1.5rem;
    width: 90%;
    max-width: 1400px;
    height: 55vh;
    min-height: 400px;
}

/* Expanding Card Base */
.persona-exp-card {
    position: relative;
    flex: 1; /* Start equal width */
    border-radius: 16px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    overflow: hidden;
    cursor: pointer;
    transition: flex 0.6s cubic-bezier(0.25, 1, 0.5, 1), transform 0.4s ease, border-color 0.4s ease, filter 0.4s ease, opacity 0.4s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    backdrop-filter: blur(10px);
}

/* Glowing Top Strips - Combined from 1st Iteration */
.persona-exp-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: transparent;
    transition: background 0.5s ease;
    z-index: 5;
}

.persona-exp-card[data-persona="standard"]:hover::after { background: linear-gradient(90deg, transparent, var(--main-color), transparent); }
.persona-exp-card[data-persona="battle_caller"]:hover::after { background: linear-gradient(90deg, transparent, var(--sub-color), transparent); }
.persona-exp-card[data-persona="advanced"]:hover::after { background: linear-gradient(90deg, transparent, var(--colorful-error-color), transparent); }

/* Hover Expanding Logic inside container - Combined from 2nd Iteration */
.persona-split-cards:hover .persona-exp-card {
    opacity: 0.5;
    filter: grayscale(80%);
}

.persona-split-cards .persona-exp-card:hover {
    flex: 2; 
    opacity: 1;
    filter: grayscale(0%);
    transform: translateY(-5px);
    border-color: var(--main-color);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
    background: rgba(0, 0, 0, 0.8);
}

.card-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 320px;
    transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.persona-exp-card:hover .card-content {
    transform: scale(1.05);
}

.card-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    opacity: 0.7;
    transition: opacity 0.3s ease, transform 0.5s ease;
}

.persona-exp-card:hover .card-icon {
    opacity: 1;
    transform: translateY(-10px) scale(1.1);
}

.card-content h3 {
    color: var(--text-color);
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 700;
    transition: color 0.3s ease;
}

.persona-exp-card:hover .card-content h3 {
    color: var(--main-color);
    text-shadow: 0 0 15px rgba(0, 0, 0, 0.8);
}

.card-content p {
    color: var(--sub-color);
    font-size: 1.05rem;
    line-height: 1.6;
    transition: color 0.3s ease;
    opacity: 0.8;
}

.persona-exp-card:hover .card-content p {
    color: var(--text-color);
    opacity: 1;
}

/* Glow effects inside the card */
.persona-exp-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(255,255,255,0.05) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: 1;
    pointer-events: none;
}

.persona-exp-card:hover::before {
    opacity: 1;
}

/* Persona Application Styles and Dropdown */
.persona-hidden { 
    display: none !important; 
}

.persona-dropdown { 
    background: var(--bg-color); 
    color: var(--main-color); 
    border: 1px solid var(--main-color); 
    padding: 0.5rem 1rem; 
    border-radius: 6px; 
    font-family: inherit; 
    font-size: 0.9rem; 
    font-weight: 600; 
    cursor: pointer; 
    transition: all 0.2s ease; 
    outline: none; 
}

.persona-dropdown:hover { 
    background: rgba(0, 0, 0, 0.2); 
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.persona-dropdown option { 
    background: var(--bg-color); 
    color: var(--text-color); 
}

/* ============================================================
   Custom Theme Picker with Theme Bubbles
   ============================================================ */

.theme-picker-wrapper {
    position: relative;
    display: inline-block;
    font-family: inherit;
    z-index: 200;
}

/* Trigger button */
.theme-picker-trigger {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-color);
    color: var(--main-color);
    border: 1px solid var(--main-color);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    outline: none;
    white-space: nowrap;
    min-width: 160px;
    justify-content: space-between;
}

.theme-picker-trigger:hover {
    background: rgba(0, 0, 0, 0.2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.theme-picker-wrapper.open .theme-picker-trigger {
    border-color: var(--main-color);
    box-shadow: 0 0 0 2px rgba(128, 128, 255, 0.2);
}

.theme-picker-label {
    flex: 1;
    text-align: left;
    overflow: hidden;
    text-overflow: ellipsis;
}

.theme-picker-chevron {
    flex-shrink: 0;
    opacity: 0.6;
    transition: transform 0.2s ease;
}

.theme-picker-wrapper.open .theme-picker-chevron {
    transform: rotate(180deg);
}

/* Trigger bubble preview */
#themePickerPreview {
    display: flex;
    align-items: center;
    gap: 3px;
    flex-shrink: 0;
    padding: 2px 4px;
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.2);
}

/* Dropdown panel */
.theme-picker-panel {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    width: 280px;
    background: var(--bg-color);
    border: 1px solid var(--main-color);
    border-radius: 8px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255,255,255,0.05);
    overflow: hidden;
    z-index: 9999;
}

.theme-picker-wrapper.open .theme-picker-panel {
    display: block;
    animation: themePanelIn 0.15s ease-out;
}

@keyframes themePanelIn {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Search */
.theme-picker-search-wrap {
    padding: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    background: rgba(0, 0, 0, 0.2);
}

.theme-picker-search {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    color: var(--text-color);
    padding: 6px 10px;
    font-size: 0.85rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}

.theme-picker-search:focus {
    border-color: var(--main-color);
}

.theme-picker-search::placeholder {
    color: var(--sub-color);
    opacity: 0.7;
}

/* Scrollable list */
.theme-picker-list {
    max-height: 340px;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--sub-color) transparent;
}

.theme-picker-list::-webkit-scrollbar { width: 4px; }
.theme-picker-list::-webkit-scrollbar-track { background: transparent; }
.theme-picker-list::-webkit-scrollbar-thumb { background: var(--sub-color); border-radius: 2px; }

/* Individual theme item */
.theme-picker-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 7px 12px;
    cursor: pointer;
    transition: background 0.1s ease;
    gap: 8px;
    background: var(--item-bg, var(--bg-color));
    border-bottom: 1px solid rgba(0, 0, 0, 0.15);
}

.theme-picker-item:hover {
    filter: brightness(1.15);
}

.theme-picker-item.active {
    outline: 2px solid var(--main-color);
    outline-offset: -2px;
}

.theme-picker-item:last-child {
    border-bottom: none;
}

.theme-item-name {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--item-main, var(--text-color));
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Bubble clusters on each row */
.theme-bubbles {
    display: flex;
    align-items: center;
    gap: 3px;
    flex-shrink: 0;
    padding: 2px 5px;
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(4px);
}

/* Single bubble — shared by picker and trigger preview */
.theme-bubble {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.4);
}

/* Slightly larger bubbles on the trigger preview */
#themePickerPreview .theme-bubble {
    width: 9px;
    height: 9px;
}