:root {
    --bg-color: #ffffff;
    --text-color: #121213;
    --border-color: #d3d6da;
    --correct-bg: #6aaa64; /* Green */
    --present-bg: #c9b458; /* Yellow/Orangeish */
    --absent-bg: #787c7e; /* Gray */
    --key-bg: #ffffff;
    --modal-bg: #ffffff;
    --shadow: 0 4px 12px rgba(0,0,0,0.1);
    --font-main: 'Helvetica Neue', Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #121213;
        --text-color: #ffffff;
        --border-color: #3a3a3c;
        --key-bg: #818384;
        --modal-bg: #121213;
    }
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* Header */
header {
    border-bottom: 1px solid var(--border-color);
    padding: 10px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.header-content {
    width: 100%;
    max-width: 600px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
}

h1 { font-size: 1.5rem; font-weight: 800; letter-spacing: 1px; }
.header-icons button {
    background: none; border: none; font-size: 1.2rem; cursor: pointer; margin-left: 10px; color: var(--text-color);
}
.streak-container { font-size: 0.9rem; color: var(--text-color); opacity: 0.8; }

/* Main Game Area */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-y: auto;
    padding: 20px;
}

#game-area {
    width: 100%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* Input */
.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

#guess-input {
    flex: 1;
    padding: 12px;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    text-transform: capitalize;
}

#submit-guess {
    padding: 0 20px;
    background-color: var(--text-color);
    color: var(--bg-color);
    border: none;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
    text-transform: uppercase;
}

#submit-guess:disabled { opacity: 0.5; cursor: not-allowed; }

/* Guess Cards */
.guess-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 5px;
    animation: popIn 0.3s ease-out;
}

.guess-card {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 10px 5px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: bold;
    text-align: center;
    background-color: var(--key-bg);
    color: var(--text-color);
}

.guess-card.correct { background-color: var(--correct-bg); color: white; border-color: var(--correct-bg); }
.guess-card.close { background-color: var(--present-bg); color: white; border-color: var(--present-bg); }

.card-label { font-size: 0.6rem; text-transform: uppercase; opacity: 0.7; margin-bottom: 2px; }
.card-value { font-size: 1rem; }

/* Arrow Rotation */
.arrow-icon {
    display: inline-block;
    width: 0; 
    height: 0; 
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 10px solid currentColor;
    transform-origin: 50% 70%;
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Footer */
footer {
    padding: 20px;
    display: flex;
    justify-content: center;
    border-top: 1px solid var(--border-color);
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    border-radius: 4px;
    color: var(--text-color);
    cursor: pointer;
    font-weight: bold;
}

/* Modals */
#modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex; justify-content: center; align-items: center;
    z-index: 100;
}
.hidden { display: none !important; }

.modal {
    background: var(--modal-bg);
    padding: 20px;
    border-radius: 8px;
    width: 90%;
    max-width: 400px;
    box-shadow: var(--shadow);
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex; justify-content: space-between; align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px; margin-bottom: 15px;
}
.close-modal { background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--text-color); }

.stats-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 20px;
}
.stat-box {
    border: 1px solid var(--border-color);
    padding: 10px; border-radius: 4px; text-align: center;
}
.stat-box span { display: block; font-size: 1.5rem; font-weight: bold; }
.stat-box label { font-size: 0.7rem; text-transform: uppercase; }

/* Toast */
#game-over-toast {
    position: fixed; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    background: var(--modal-bg);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: center;
    z-index: 200;
    border: 2px solid var(--border-color);
}

@keyframes popIn {
    0% { transform: scale(0.8); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

/* Mobile Adjustments */
@media (max-width: 400px) {
    .guess-row { grid-template-columns: 1fr 1fr; }
    .guess-card:nth-child(3) { grid-column: span 2; }
}