:root {
    /* Light Mode (Default) */
    --bg-color: #f0f0f2;
    --card-bg: #ffffff;
    --text-primary: #18181b;
    --text-secondary: #606065;
    --accent: #000000;
    --border-color: #e4e4e7;
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-bg-hover: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.05);
    --glass-border-hover: rgba(0, 0, 0, 0.1);
    --bg-gradient: radial-gradient(circle at 50% 50%, rgba(0,0,0,0.03) 0%, rgba(0,0,0,0) 60%);
    --font-body: 'Inter', sans-serif;
    --ease-premium: cubic-bezier(0.19, 1, 0.22, 1);
    --modal-bg: #ffffff;
    --input-border: #ccc;
}

[data-theme="dark"] {
    --bg-color: #000000;
    --card-bg: #0a0a0a;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --accent: #ffffff;
    --border-color: #222;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-bg-hover: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-hover: rgba(255, 255, 255, 0.2);
    --bg-gradient: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.03) 0%, rgba(0,0,0,0) 60%);
    --modal-bg: #0a0a0a;
    --input-border: #333;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    position: relative;
    transition: background-color 0.5s var(--ease-premium), color 0.5s var(--ease-premium);
}

body::before {
    content: '';
    position: absolute;
    width: 120vw;
    height: 120vh;
    background: var(--bg-gradient);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: -1;
    transition: background 0.5s var(--ease-premium);
}

/* Theme Toggle & Horizon Animation */
.theme-toggle {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 100;
    padding: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    overflow: hidden; /* Mask the horizon */
    /* Optional: glass bg for the button itself */
    /* background: var(--glass-bg); 
       backdrop-filter: blur(4px); */
}

.celestial-container {
    position: relative;
    width: 100%;
    height: 100%;
}

/* Common Wrapper Styles */
.sun-wrapper, .moon-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.6s cubic-bezier(0.68, -0.55, 0.27, 1.55), opacity 0.5s ease;
}

/* --- LIGHT MODE (Default) --- */
/* Sun is visible */
[data-theme="light"] .sun-wrapper {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
}

/* Moon is set (below horizon) */
[data-theme="light"] .moon-wrapper {
    transform: translateY(150%) rotate(90deg);
    opacity: 0;
}

/* --- DARK MODE --- */
/* Sun is set (below horizon) */
[data-theme="dark"] .sun-wrapper {
    transform: translateY(150%) rotate(-90deg);
    opacity: 0;
}

/* Moon rises */
[data-theme="dark"] .moon-wrapper {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
}

/* Icon Specifics */
.sun-icon {
    width: 24px;
    height: 24px;
    color: #FDB813; /* Warm Yellow */
    filter: drop-shadow(0 0 5px rgba(253, 184, 19, 0.4));
}

.moon-icon {
    width: 24px;
    height: 24px;
    color: var(--text-primary);
}

/* Stars */
.star-icon {
    position: absolute;
    color: var(--text-primary);
    opacity: 0;
    transition: opacity 0.5s ease 0.2s;
}

.star-icon.s-1 { width: 4px; top: 10px; right: 10px; }
.star-icon.s-2 { width: 3px; bottom: 12px; left: 8px; }

[data-theme="dark"] .star-icon {
    opacity: 0.7;
    animation: twinkle 3s infinite ease-in-out;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.2); }
}

.theme-toggle:hover .sun-icon {
    transform: rotate(15deg);
    transition: transform 0.3s ease;
}

.container {
    width: 100%;
    max-width: 1000px;
    padding: 2rem;
    height: 100%;
    position: relative;
}

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.screen.active {
    opacity: 1;
    pointer-events: all;
    z-index: 10;
}

.hidden {
    display: none;
}

/* Typography & Layout */
h1 {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 3rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-primary);
}

.content-wrapper {
    text-align: center;
    max-width: 400px;
    width: 100%;
}

/* Form Styles */
.input-group {
    margin-bottom: 2rem;
    text-align: left;
    position: relative;
}

.input-group::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 1px;
    background: var(--text-primary);
    transition: width 0.8s var(--ease-premium);
}

.input-group:focus-within::after {
    width: 100%;
}

label {
    display: block;
    margin-bottom: 0.8rem;
    color: var(--text-secondary);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 600;
}

input {
    width: 100%;
    padding: 0.8rem 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 1.1rem;
    font-family: var(--font-body);
    font-weight: 300;
    transition: border-color 0.3s var(--ease-premium);
}

input:focus {
    outline: none;
    border-bottom-color: rgba(128,128,128,0.2); 
}

/* Buttons */
button {
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.8rem;
    transition: all 0.4s var(--ease-premium);
}

button:active {
    transform: scale(0.96);
}

.btn-primary {
    background-color: var(--text-primary);
    color: var(--bg-color);
    border: none;
    padding: 1rem 3rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-top: 1.5rem;
    border-radius: 2px;
}

.btn-primary:hover {
    background-color: var(--text-primary);
    filter: brightness(0.9);
    box-shadow: 0 0 20px rgba(128,128,128,0.3);
}

.btn-secondary {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.8rem 0;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.7rem;
}

.btn-secondary:hover:not(:disabled) {
    color: var(--text-primary);
}

.btn-secondary:disabled {
    opacity: 0;
    cursor: not-allowed;
}

/* Assessment Grid */
.assessment-layout {
    display: grid;
    grid-template-columns: 1fr 240px;
    gap: 6rem;
    width: 100%;
}

.question-area {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.progress-indicator {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    letter-spacing: 0.1em;
}

.progress-indicator #q-current {
    color: var(--text-primary);
}

.question-text {
    font-size: 1.25rem;
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: 2.5rem;
}

/* Options */
.options-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.option-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.5s var(--ease-premium);
    display: flex;
    align-items: center;
    border-radius: 4px;
}

.option-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 40px -10px rgba(0,0,0,0.1);
}

.option-card.selected {
    border-color: var(--text-primary);
    background: var(--glass-bg-hover);
    box-shadow: 0 0 0 1px var(--text-primary);
}

.option-label {
    font-weight: 300;
    margin-right: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.option-text {
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--text-primary);
}

/* Controls & Locking */
.controls {
    margin-top: 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.lock-icon {
    width: 14px;
    height: 14px;
    margin: 0 6px;
    display: inline-block;
    vertical-align: middle;
}

/* Previous Button (Always Locked) */
.btn-secondary {
    display: flex;
    align-items: center;
    /* ... existing styles ... */
}

.btn-secondary.locked {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Next Button (Locked State) */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    /* ... existing styles ... */
}

.btn-primary.locked {
    background-color: var(--text-secondary);
    color: var(--bg-color);
    cursor: not-allowed;
    opacity: 0.6;
    box-shadow: none;
}

.btn-primary.locked:hover {
    background-color: var(--text-secondary);
    box-shadow: none;
    transform: none;
    filter: none;
}

/* Hide lock on Next when unlocked */
.btn-primary:not(.locked) .lock-icon {
    display: none;
}

/* Stats Panel */
.stats-panel {
    border-left: 1px solid var(--border-color);
    padding-left: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 3rem;
}

.stat-card h3 {
    color: var(--text-secondary);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
}

.timer-display {
    font-size: 2rem;
    font-weight: 200;
    color: var(--text-primary);
}

.status-bar {
    width: 100%;
    height: 1px;
    background: var(--border-color);
}

.status-fill {
    height: 100%;
    background: var(--text-primary);
    transition: width 0.5s ease;
}

.ghost-stat p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    font-weight: 300;
}

/* Animations */
.fade-in {
    opacity: 0;
    animation: fadeInUp 0.8s forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    .assessment-layout {
        grid-template-columns: 1fr;
    }
    .stats-panel {
        display: none;
    }
    h1 { font-size: 2.5rem; }
}

/* New Elements */
.intro-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
    font-weight: 300;
}

.intro-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.incapable-wrapper {
    margin-top: 2rem;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.incapable-wrapper:hover {
    opacity: 1;
}

#incapable-btn {
    background: transparent;
    border: none;
    color: #ff4d4d;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    text-decoration: none;
    padding: 0.5rem;
}

#incapable-btn:hover {
    text-decoration: underline;
}

/* Manifesto / Completion Screen */
.manifesto-container {
    width: 100%;
    max-width: 700px;
    padding: 3rem;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.3);
    text-align: left; /* Editorial look */
    position: relative;
    max-height: 90vh; /* Limit height */
    overflow-y: auto; /* Allow scrolling */
    scrollbar-width: none; /* Hide scrollbar Firefox */
    -ms-overflow-style: none; /* Hide scrollbar IE */
}

.manifesto-container::-webkit-scrollbar {
    display: none; /* Hide scrollbar Chrome/Safari */
}

.manifesto-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--text-primary), transparent);
    opacity: 0.5;
}

.manifesto-title {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    font-weight: 400;
    font-style: italic;
    margin-bottom: 2.5rem;
    color: var(--text-primary);
    text-align: center;
    line-height: 1.2;
}

.manifesto-body p {
    font-family: var(--font-body);
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.manifesto-body strong {
    color: var(--text-primary);
    font-weight: 600;
}

.manifesto-body em {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    color: var(--text-primary);
}

.manifesto-divider {
    border: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-border-hover), transparent);
    margin: 2rem 0;
}

.manifesto-closing {
    font-size: 1.25rem !important;
    color: var(--text-primary) !important;
    font-weight: 400 !important;
    text-align: center;
    margin-top: 2rem;
    border-left: 2px solid var(--text-primary);
    padding-left: 1.5rem;
}

@media (max-width: 768px) {
    .manifesto-container {
        padding: 1.5rem;
        border: none;
        background: transparent;
        box-shadow: none;
    }
    .manifesto-title {
        font-size: 2rem;
    }
}

/* Custom Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s var(--ease-premium);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: var(--modal-bg);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    max-width: 400px;
    width: 90%;
    text-align: center;
    border-radius: 4px;
    transform: translateY(20px);
    transition: transform 0.4s var(--ease-premium), background 0.4s;
    box-shadow: 0 20px 50px rgba(0,0,0,0.2);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-content h3 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.modal-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.modal-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.modal-actions button {
    margin-top: 0;
    min-width: 100px;
}