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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #050520;
    font-family: 'Inter', sans-serif;
}

#game-container {
    width: 100%;
    height: 100%;
    position: relative;
}

#game-canvas {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
}

/* Shared overlay base */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at center, #0a0a2e 0%, #050520 100%);
    z-index: 100;
    transition: opacity 0.6s ease-out;
}

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

#loading-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at center, #0a0a2e 0%, #050520 100%);
    z-index: 110;
    transition: opacity 0.8s ease-out;
}

#loading-screen.hidden {
    opacity: 0;
    pointer-events: none;
}

.title {
    font-family: 'Cinzel', serif;
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 900;
    color: #ffd700;
    text-shadow: 0 0 30px rgba(255, 215, 0, 0.4), 0 0 60px rgba(255, 215, 0, 0.2);
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.welcome-logo {
    width: 80px;
    height: auto;
    margin-bottom: 0.5rem;
    pointer-events: none;
}

.tagline {
    font-family: 'Inter', sans-serif;
    font-size: clamp(0.9rem, 2vw, 1.2rem);
    font-weight: 300;
    color: rgba(192, 192, 220, 0.8);
    font-style: italic;
    margin-bottom: 2rem;
}

.loader {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 215, 0, 0.2);
    border-top-color: #ffd700;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Registration screen */
#register-form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    width: 90%;
    max-width: 320px;
}

#register-form label {
    font-size: 0.95rem;
    color: rgba(192, 192, 220, 0.8);
    letter-spacing: 0.05em;
}

#register-form input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: 'Inter', sans-serif;
    font-size: 1.1rem;
    text-align: center;
    color: #fdf4e3;
    background: rgba(255, 255, 255, 0.06);
    border: 2px solid rgba(255, 215, 0, 0.25);
    border-radius: 8px;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}

#register-form input::placeholder {
    color: rgba(192, 192, 220, 0.35);
}

#register-form input:focus {
    border-color: #ffd700;
    box-shadow: 0 0 16px rgba(255, 215, 0, 0.2);
}

.btn-primary {
    padding: 0.75rem 2.5rem;
    font-family: 'Cinzel', serif;
    font-size: 1rem;
    font-weight: 700;
    color: #050520;
    background: linear-gradient(135deg, #ffd700 0%, #f0c040 100%);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    letter-spacing: 0.08em;
    transition: transform 0.2s, box-shadow 0.3s;
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(255, 215, 0, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Welcome screen */
.welcome-greeting {
    font-family: 'Inter', sans-serif;
    font-size: clamp(1rem, 3vw, 1.4rem);
    font-weight: 300;
    color: rgba(192, 192, 220, 0.9);
    margin-bottom: 2rem;
}

.welcome-greeting span {
    color: #ffd700;
    font-weight: 600;
}

.player-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
}

.stat-value {
    font-family: 'Cinzel', serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: #ffd700;
    text-shadow: 0 0 12px rgba(255, 215, 0, 0.3);
}

.stat-label {
    font-size: 0.75rem;
    color: rgba(192, 192, 220, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Solution modal */
#solution-modal {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    z-index: 200;
    transition: opacity 0.4s ease-out;
    pointer-events: none;
}

#solution-modal.hidden {
    opacity: 0;
    pointer-events: none;
}

.solution-panel {
    pointer-events: auto;
    background: rgba(10, 10, 46, 0.35);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 215, 0, 0.25);
    border-radius: 16px 16px 0 0;
    padding: 1rem 1.5rem 1.2rem;
    max-width: 400px;
    width: 95%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
}

.solution-title {
    font-family: 'Cinzel', serif;
    font-size: 1rem;
    font-weight: 700;
    color: rgba(192, 192, 220, 0.9);
    text-align: center;
    letter-spacing: 0.04em;
}

.solution-words {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4rem;
    width: 100%;
}

.solution-word-item {
    padding: 0.4rem 0.8rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: #fdf4e3;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 6px;
    cursor: pointer;
    text-align: center;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: background 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.solution-word-item:hover {
    background: rgba(255, 215, 0, 0.12);
    border-color: rgba(255, 215, 0, 0.4);
    color: #ffd700;
    box-shadow: 0 0 16px rgba(255, 215, 0, 0.15);
}

.solution-hint {
    font-family: 'Inter', sans-serif;
    font-size: 0.75rem;
    color: rgba(192, 192, 220, 0.4);
    font-style: italic;
}

#solution-continue-btn {
    margin-top: 0.5rem;
}

/* Mode selector */
.mode-buttons {
    display: flex;
    gap: 0.6rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.mode-btn {
    padding: 0.5rem 1.2rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    color: rgba(192, 192, 220, 0.5);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    cursor: default;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all 0.3s ease;
}

.mode-btn.unlocked {
    color: rgba(192, 192, 220, 0.9);
    border-color: rgba(255, 215, 0, 0.2);
    cursor: pointer;
}

.mode-btn.unlocked:hover {
    background: rgba(255, 215, 0, 0.08);
    border-color: rgba(255, 215, 0, 0.4);
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.1);
}

.mode-btn.active {
    color: #050520;
    background: linear-gradient(135deg, #ffd700 0%, #f0c040 100%);
    border-color: #ffd700;
    cursor: pointer;
    box-shadow: 0 0 16px rgba(255, 215, 0, 0.3);
}

.mode-btn.locked {
    opacity: 0.5;
    border: 2px solid rgba(255, 215, 0, 0.25);
    padding: 0.6rem 1.3rem;
    cursor: not-allowed;
}

.mode-btn.locked::after {
    content: ' \1F512';
    font-size: 0.7rem;
}

/* Info button & menu */
.info-btn {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: 1px solid rgba(255, 215, 0, 0.5);
    background: rgba(255, 215, 0, 0.08);
    color: #ffd700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.info-btn svg {
    width: 42px;
    height: 42px;
}


.info-btn:hover {
    color: #ffd700;
    border-color: rgba(255, 215, 0, 0.5);
    background: rgba(255, 215, 0, 0.08);
    box-shadow: 0 0 16px rgba(255, 215, 0, 0.15);
}

/* Info dialog */
#info-dialog {
    background: rgba(10, 10, 46, 0.98);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 16px;
    padding: 0;
    max-width: 420px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    color: inherit;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6), 0 0 40px rgba(255, 215, 0, 0.05);
}

#info-dialog::backdrop {
    background: rgba(5, 5, 32, 0.85);
}

.info-dialog-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.8rem 2rem 1.5rem;
    max-height: 80vh;
    overflow-y: auto;
}

#info-dialog-body {
    font-family: 'Inter', sans-serif;
    font-size: 0.88rem;
    line-height: 1.65;
    color: rgba(192, 192, 220, 0.85);
    width: 100%;
}

#info-dialog-body h3 {
    font-family: 'Cinzel', serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: rgba(255, 215, 0, 0.85);
    margin: 1rem 0 0.4rem;
}

#info-dialog-body h3:first-child {
    margin-top: 0;
}

#info-dialog-body p {
    margin-bottom: 0.6rem;
}

#info-dialog-body ul {
    margin: 0.3rem 0 0.6rem 1.2rem;
}

#info-dialog-body li {
    margin-bottom: 0.3rem;
}

.info-tabs {
    display: flex;
    gap: 0.3rem;
    width: 100%;
    margin-bottom: 0.5rem;
}

.info-tab {
    flex: 1;
    padding: 0.5rem 0.6rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    color: rgba(192, 192, 220, 0.6);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    transition: all 0.2s ease;
}

.info-tab:hover {
    color: rgba(192, 192, 220, 0.9);
    background: rgba(255, 215, 0, 0.06);
    border-color: rgba(255, 215, 0, 0.2);
}

.info-tab.active {
    color: #050520;
    background: linear-gradient(135deg, #ffd700 0%, #f0c040 100%);
    border-color: #ffd700;
}

#info-dialog .btn-primary {
    margin-top: 0.5rem;
    padding: 0.6rem 2rem;
    font-size: 0.9rem;
}