/* --- Global & Typography --- */
:root {
    --main-bg-color: #ffffff;
    --text-color: #121212;
    --border-color: #e0e0e0;
    --dark-border-color: #121212;
    --primary-color: #6aaa64;
    --dark-primary-color: #538d50;
    --secondary-color: #777;
    --dark-secondary-color: #4a4a4a;
    --error-color: #c74848;
    --deep-error-color: #ff8a8a;
    --grey-color: #eeeeee;
    --green-light: #c7e9c5;
    --green-medium: #8ac786;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--main-bg-color); color: var(--text-color); margin: 0;
    animation: fadeIn 0.5s ease-in-out;
}

main { max-width: 600px; margin: 0 auto; padding: 40px 20px; text-align: center; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.hidden { display: none; }

/* --- Header --- */
#main-header {
    min-height: 160px; padding: 0 20px; display: flex; align-items: center;
    border-bottom: 1px solid var(--border-color);
}
.header-content {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
}
.header-left {
    display: flex;
    align-items: baseline;
    gap: 20px;
    min-width: 0;
}
.title-font { font-family: 'Times New Roman', Times, serif; font-weight: bold; font-size: 4rem; }
.date-font { font-family: 'Courier New', Courier, monospace; font-size: 1.5rem; color: var(--secondary-color); }

/* --- Homepage & General Buttons --- */
.logo { width: 100px; margin: 40px auto 10px auto; }
h2 { font-size: 2rem; font-weight: bold; margin: 10px 0; }
.instructions { font-size: 1.1rem; color: var(--secondary-color); }
.button-container { display: flex; flex-direction: column; gap: 15px; margin-top: 50px; }

button {
    padding: 15px 30px; font-size: 1.1rem; font-weight: bold;
    border-radius: 50px; cursor: pointer; transition: all 0.2s ease;
}
#play-btn, #submit-btn, #continue-btn { background-color: var(--primary-color); color: white; border: none; width: 100%; }
#play-btn:hover, #submit-btn:hover:not(:disabled) { filter: brightness(1.1); transform: scale(1.02); }
.secondary-btn, #shuffle-btn {
    background-color: transparent; color: var(--text-color); width: 100%;
    border: 1px solid var(--dark-border-color);
}
.secondary-btn:hover, #shuffle-btn:hover { background-color: #f0f0f0; }
.thin-font { font-weight: 400; }

/* --- Game Page Styles --- */
.game-instruction { font-size: 1.2rem; color: var(--secondary-color); margin-bottom: 30px; }
#tokens-container { display: flex; flex-direction: column; gap: 15px; }
.token-btn span { transition: opacity 0.3s ease-in-out; }
.token-btn span.fading-out { opacity: 0; }
.token-btn { color: var(--text-color); background-color: var(--grey-color); border: none; width: 100%;}
.token-btn.selected { background-color: var(--text-color); color: var(--grey-color); }
.token-btn:disabled { background-color: #f0f0f0; color: var(--secondary-color); cursor: not-allowed; opacity: 0.7; }

.token-btn.correct-reveal {
    animation: verticalWiggle 0.8s ease-in-out;
    background-color: var(--primary-color); color: white;
}
.token-btn.review-correct { /* Static highlight for review mode */
    background-color: var(--primary-color); color: white; transition: none;
}
@keyframes verticalWiggle {
    0%, 100% { transform: translateY(0); } 25% { transform: translateY(-8px); }
    50% { transform: translateY(8px); } 75% { transform: translateY(-4px); }
}
.token-btn.incorrect-shake { animation: shake 0.5s; }
.token-btn.flash-red { background-color: var(--deep-error-color); }
@keyframes shake {
    0%, 100% { transform: translateX(0); } 25% { transform: translateX(-8px); } 75% { transform: translateX(8px); }
}

.game-footer { margin-top: 40px; text-align: center; }
#mistakes-counter {
    font-family: sans-serif; font-size: 18px; color: var(--dark-secondary-color);
    margin-bottom: 20px; letter-spacing: -0.5px;
}
#mistakes-counter span { font-size: 1.75rem; vertical-align: middle; }
.game-controls { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
#center-controls { display: flex; gap: 10px; flex-grow: 1; }
#submit-btn:not(:disabled) { background-color: var(--dark-primary-color); }
#submit-btn:disabled { background-color: var(--primary-color); opacity: 0.6; cursor: not-allowed; }

#progress-tracker { display: flex; justify-content: center; gap: 8px; margin-top: 25px; }
.progress-dot { width: 12px; height: 12px; border-radius: 50%; background-color: #e0e0e0; }
.progress-dot.completed-1 { background-color: var(--green-light); }
.progress-dot.completed-2 { background-color: var(--green-medium); }
.progress-dot.completed-3 { background-color: var(--primary-color); }

/* --- Review Mode Styles --- */
.nav-btn { width: 50px; height: 50px; padding: 0; background-color: var(--grey-color); color: var(--text-color); border: none; }
.nav-btn:hover:not(:disabled) { background-color: var(--text-color); color: var(--grey-color); }
.nav-btn:disabled { opacity: 0.2; cursor: not-allowed; }
#review-explanation {
    margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--border-color);
    color: var(--dark-secondary-color); font-style: italic;
}

/* --- Result Modal --- */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.6);
    display: flex; justify-content: center; align-items: center; opacity: 0;
    visibility: hidden; transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal-overlay.visible { opacity: 1; visibility: visible; }
.modal-content {
    background: white; padding: 30px; border-radius: 10px; text-align: center;
    width: 90%; max-width: 450px; transform: scale(0.9); transition: transform 0.3s ease;
}
.modal-overlay.visible .modal-content { transform: scale(1); }
#final-score { font-size: 1.1rem; color: var(--dark-secondary-color); margin-bottom: 20px;}
.category-label { font-size: 0.8rem; font-weight: bold; color: var(--secondary-color); margin: 10px 0 5px 0; letter-spacing: 1px; }
#result-category { font-size: 1.5rem; font-weight: bold; margin: 0 0 15px 0; }
#continue-btn { max-width: 200px; margin: 20px auto 0 auto; }
#continue-btn.view-puzzle-btn { background-color: var(--secondary-color); }

/* --- Login Page Styles --- */
#login-page {
    animation: fadeIn 0.5s ease-in-out;
}

#auth-form {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 25px; 
}

#action-btn {
    margin-top: 10px;
}

.input-group {
    text-align: left;
}

.input-group label {
    display: block;
    margin-bottom: 12px;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

.input-group input {
    width: 100%;
    padding: 15px;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-sizing: border-box; /* Ensures padding doesn't affect width */
}

.input-group input:focus {
    outline: none;
    border-color: var(--dark-border-color);
}

.error-text {
    color: var(--error-color);
    min-height: 20px;
    margin: 0;
}

.back-link {
    display: inline-block;
    margin-top: 30px;
    color: var(--secondary-color);
    text-decoration: none;
}

.back-link:hover {
    text-decoration: underline;
}

.pill-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
}

#form-title {
    font-size: 2rem;
    font-weight: bold;
    margin: 10px 0;
}

/* --- Stats Dropdown --- */
.header-right {
    position: relative;
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: flex-end;
}
.header-right .secondary-btn,
#stats-btn {
    width: auto;
}
.dropdown {
    position: relative;
    display: inline-block;
}
#stats-btn {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--dark-border-color);
    padding: 10px 25px;
    font-size: 1rem;
}
.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    background-color: #f9f9f9;
    min-width: 220px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 0.9rem;
}
.dropdown-content.show {
    display: block;
}
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    text-align: center;
}
.stat-item {
    display: flex;
    flex-direction: column;
}
.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
}
.stat-label {
    font-size: 0.8rem;
    color: var(--secondary-color);
}