/**
 * Florilegium Cilpa - Gothic Romance Aesthetic
 * 
 * Design Philosophy:
 * - Deep, enveloping darkness ("tumsa")
 * - Crimson accents (blood, visceral)
 * - Starlit silver highlights
 * - Elegant serif typography
 */

:root {
    --color-bg: #030305;
    --color-bg-soft: #0a0a10;
    --color-text: #c0c0d0;
    --color-text-muted: #606070;
    --color-accent: #8B0020; /* Deep crimson - blood, life */
    --color-accent-soft: #660018;
    --color-accent-glow: rgba(139, 0, 32, 0.4);
    --color-border: #1a1a25;
    --color-ui-bg: rgba(5, 5, 10, 0.9);
    --font-main: 'Crimson Text', 'Garamond', 'Georgia', serif;
    --shadow-dark: 0 4px 20px rgba(0, 0, 0, 0.8);
    --shadow-glow: 0 0 20px var(--color-accent-glow);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-main);
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    height: 100dvh; /* Dynamic viewport height for mobile */
}

/* Canvas Container */
#canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* Loading Screen - Mysterious entrance */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, #0a0510 0%, #030305 70%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 100;
    transition: opacity 0.8s ease;
}

.loader {
    width: 48px;
    height: 48px;
    border: 2px solid var(--color-accent-soft);
    border-top: 2px solid var(--color-accent);
    border-radius: 50%;
    animation: spin 1.2s ease-in-out infinite;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-glow);
}

#loading-screen p {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--color-text-muted);
    letter-spacing: 2px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* UI Container */
#ui-container {
    position: fixed;
    bottom: 2rem;
    right: 1.5rem;
    z-index: 10;
}

/* Add Verse Button - Elegant, inviting */
#add-verse-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0f0f15 0%, #1a0a0f 100%);
    border: 1px solid var(--color-accent-soft);
    color: var(--color-text);
    font-size: 1.8rem;
    font-weight: 300;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-dark);
}

#add-verse-btn:hover {
    box-shadow: var(--shadow-glow), var(--shadow-dark);
    border-color: var(--color-accent);
    transform: scale(1.05);
}

#add-verse-btn:active {
    transform: scale(0.95);
    background: var(--color-accent-soft);
}

/* Input Overlay - Intimate, focused */
#input-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(3, 3, 5, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 50;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    transition: opacity 0.4s ease;
}

#input-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.input-content {
    width: 92%;
    max-width: 480px;
    padding: 2rem 1.5rem;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    background: linear-gradient(180deg, rgba(15, 10, 20, 0.3) 0%, transparent 100%);
    border-radius: 8px;
}

#close-input-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.2s;
}

#close-input-btn:hover {
    color: var(--color-text);
}

h2 {
    font-weight: 400;
    font-style: italic;
    text-align: center;
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

/* Textarea - Poetry input */
textarea {
    width: 100%;
    height: 140px;
    background-color: rgba(10, 10, 15, 0.6);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text);
    padding: 1rem;
    font-family: var(--font-main);
    font-size: 1.05rem;
    line-height: 1.6;
    resize: none;
    transition: border-color 0.3s;
}

textarea::placeholder {
    color: var(--color-text-muted);
    font-style: italic;
}

textarea:focus {
    outline: none;
    border-color: var(--color-accent-soft);
    box-shadow: 0 0 10px rgba(139, 0, 32, 0.15);
}

/* Character Counter */
.char-counter {
    text-align: right;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: -0.5rem;
}

/* Submit Button - Romantic, inviting */
#submit-verse-btn {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-soft) 100%);
    color: var(--color-text);
    border: none;
    padding: 0.9rem 1.5rem;
    border-radius: 6px;
    font-family: var(--font-main);
    font-size: 1.05rem;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--shadow-dark);
}

#submit-verse-btn:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

#submit-verse-btn:active {
    transform: translateY(0);
}

#submit-verse-btn:disabled {
    background: var(--color-border);
    cursor: not-allowed;
    box-shadow: none;
}

/* Error Message */
#error-message {
    color: #cc4444;
    text-align: center;
    font-size: 0.9rem;
    font-style: italic;
}

#error-message.hidden {
    display: none;
}

/* Mobile adjustments */
@media (max-width: 480px) {
    #ui-container {
        bottom: 1.5rem;
        right: 1rem;
    }
    
    #add-verse-btn {
        width: 52px;
        height: 52px;
        font-size: 1.6rem;
    }
    
    .input-content {
        padding: 1.5rem 1rem;
    }
    
    textarea {
        height: 120px;
        font-size: 1rem;
    }
}

/* Safe area insets for notched phones */
@supports (padding: max(0px)) {
    #ui-container {
        bottom: max(2rem, env(safe-area-inset-bottom));
        right: max(1.5rem, env(safe-area-inset-right));
    }
    
    #input-overlay {
        padding-bottom: env(safe-area-inset-bottom);
    }
}