/* ============================================
   A Story for Chandhana - Clean Modern Book
   ============================================ */

:root {
    --cream: #fdfbf7;
    --paper: #f8f5ef;
    --ink: #2c2c2c;
    --ink-light: #555;
    --accent: #8b5a5a;
    --accent-light: #a67c7c;
    --border: #e0d8cc;
    --shadow: rgba(0, 0, 0, 0.08);

    --font-body: 'Crimson Text', Georgia, serif;
    --font-heading: 'Cinzel', 'Times New Roman', serif;

    --max-width: 600px;
    --padding: 2rem;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 18px;
}

body {
    font-family: var(--font-body);
    background: var(--cream);
    color: var(--ink);
    min-height: 100vh;
    line-height: 1.7;
}

/* ============================================
   Screens
   ============================================ */
.screen {
    position: fixed;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--padding);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
}

.screen.active {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   Title Screen
   ============================================ */
.title-card {
    text-align: center;
    max-width: 400px;
}

.title-prelude {
    font-size: 0.9rem;
    color: var(--ink-light);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: 0.05em;
}

.title-ornament {
    width: 60px;
    height: 1px;
    background: var(--accent);
    margin: 1.5rem auto;
}

.subtitle {
    font-style: italic;
    color: var(--ink-light);
    margin-bottom: 2.5rem;
}

.title-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-family: var(--font-body);
    font-size: 1rem;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--ink);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn.primary {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--cream);
}

.btn.primary:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--cream);
}

.btn.secondary {
    font-size: 0.9rem;
    padding: 0.75rem 1.5rem;
}

.btn.treasure {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--cream);
}

.btn.treasure:hover {
    background: var(--accent-light);
    border-color: var(--accent-light);
}

.icon-btn {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--ink-light);
    cursor: pointer;
    transition: color 0.2s ease;
}

.icon-btn:hover {
    color: var(--ink);
}

/* ============================================
   Book Screen
   ============================================ */
#book-screen {
    align-items: flex-start;
    padding-top: 3rem;
    overflow-y: auto;
}

.book {
    width: 100%;
    max-width: var(--max-width);
    min-height: calc(100vh - 6rem);
    background: var(--paper);
    border: 1px solid var(--border);
    box-shadow: 0 4px 20px var(--shadow);
    display: flex;
    flex-direction: column;
}

.book-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--padding);
    border-bottom: 1px solid var(--border);
}

.chapter-label {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink-light);
}

.book-content {
    flex: 1;
    padding: var(--padding);
    padding-bottom: 1rem;
}

.chapter-text {
    opacity: 0;
    transition: opacity 0.4s ease;
}

.chapter-text.visible {
    opacity: 1;
}

.chapter-text p {
    margin-bottom: 1.25em;
}

.chapter-text p:first-child::first-letter {
    font-size: 3.5em;
    float: left;
    line-height: 0.8;
    padding-right: 0.1em;
    color: var(--accent);
    font-family: var(--font-heading);
}

.chapter-text em {
    color: var(--accent);
}

.chapter-text strong {
    font-weight: 600;
}

/* ============================================
   Choices
   ============================================ */
.choices {
    padding: 1rem var(--padding) var(--padding);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.choice-btn {
    display: block;
    width: 100%;
    padding: 1rem 1.25rem;
    text-align: left;
    font-family: var(--font-body);
    font-size: 1rem;
    background: var(--cream);
    border: 1px solid var(--border);
    color: var(--ink);
    cursor: pointer;
    transition: all 0.2s ease;
}

.choice-btn:hover {
    border-color: var(--accent);
    background: white;
    padding-left: 1.5rem;
}

/* ============================================
   Riddles
   ============================================ */
.riddle-container {
    padding: 0.5rem 0;
}

.riddle-question {
    font-style: italic;
    color: var(--accent);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.riddle-counter {
    font-weight: 600;
    color: var(--ink);
    font-style: normal;
}

.riddle-input-group {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.riddle-input {
    flex: 1;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    border: 1px solid var(--border);
    background: var(--cream);
    color: var(--ink);
    outline: none;
    transition: border-color 0.2s ease;
}

.riddle-input:focus {
    border-color: var(--accent);
}

.riddle-input::placeholder {
    color: var(--ink-light);
    opacity: 0.6;
}

.riddle-submit {
    flex-shrink: 0;
}

.riddle-feedback {
    min-height: 1.5em;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.riddle-feedback.error {
    color: #a65353;
}

.riddle-feedback.success {
    color: #5a8b5a;
}

.riddle-hint {
    font-size: 0.9rem;
    color: var(--ink-light);
    font-style: italic;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: var(--cream);
    border-left: 2px solid var(--accent);
}

.riddle-back {
    margin-top: 0.5rem;
}

/* ============================================
   Ending Screen
   ============================================ */
.ending-card {
    text-align: center;
    max-width: 500px;
    padding: var(--padding);
    background: var(--paper);
    border: 1px solid var(--border);
}

.ending-ornament {
    width: 40px;
    height: 40px;
    margin: 0 auto 1.5rem;
    border: 1px solid var(--accent);
    border-radius: 50%;
}

.ending-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
}

.ending-text {
    color: var(--ink-light);
    font-style: italic;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.ending-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 600px) {
    html {
        font-size: 16px;
    }

    :root {
        --padding: 1.5rem;
    }

    .title {
        font-size: 2.5rem;
    }

    #book-screen {
        padding: 0;
        padding-top: 0;
    }

    .book {
        min-height: 100vh;
        border: none;
        box-shadow: none;
    }

    .riddle-input-group {
        flex-direction: column;
    }

    .riddle-submit {
        width: 100%;
    }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
}