/* ===== CSS Variables ===== */
:root {
    /* Colors - Dark Theme */
    --color-bg-primary: #0a0e27;
    --color-bg-secondary: #141b3d;
    --color-bg-tertiary: #1e2749;
    --color-text-primary: #ffffff;
    --color-text-secondary: #b0b8d0;
    /* Increased lightness for better contrast */

    /* Tile States */
    --color-correct: #ffd700;
    --color-present: #ff8c42;
    --color-absent: #3a3a3c;
    --color-empty: #2d3250;
    --color-filled: #3d4466;

    /* Keyboard */
    --color-key: #565f7e;
    --color-key-hover: #6d7698;

    /* Accents */
    --color-accent: #00d4ff;
    --color-border: rgba(255, 255, 255, 0.1);

    /* Shadows & Glows */
    --shadow-tile: 0 4px 12px rgba(0, 0, 0, 0.3);
    --glow-correct: 0 0 20px rgba(255, 215, 0, 0.5);
    --glow-present: 0 0 20px rgba(255, 140, 66, 0.5);

    /* Typography */
    --font-main: 'Poppins', sans-serif;

    /* Spacing */
    --gap-small: 0.25rem;
    --gap-medium: 0.5rem;
    --gap-large: 1rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, #0d1435 100%);
    color: var(--color-text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* ===== Header ===== */
.header {
    border-bottom: 1px solid var(--color-border);
    padding: 1rem;
    background: rgba(20, 27, 61, 0.6);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.3rem;
    background: linear-gradient(135deg, var(--color-accent), var(--color-correct));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.1);
}

.icon-btn:active {
    transform: scale(0.95);
}

/* Hint Button */
.hint-btn {
    position: relative;
}

.hint-counter {
    position: absolute;
    top: 0;
    right: 0;
    background: linear-gradient(135deg, var(--color-accent), #0099cc);
    color: var(--color-text-primary);
    font-size: 0.625rem;
    font-weight: 700;
    width: 1.25rem;
    height: 1.25rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 212, 255, 0.4);
}

.hint-btn:hover {
    color: var(--color-accent);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.hint-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* ===== Category Hint Banner ===== */
/* ===== Category Hint Banner ===== */
.category-hint {
    background: linear-gradient(135deg, rgba(20, 27, 61, 0.9), rgba(30, 39, 73, 0.9));
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 1rem;
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.hint-row {
    display: flex;
    align-items: center;
    justify-content: center;
}

.category-label {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-right: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
}

.category-value {
    color: var(--color-accent);
    font-size: 1rem;
    font-weight: 700;
    text-transform: capitalize;
    transition: opacity var(--transition-medium);
}

.category-grid {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.category-btn {
    width: 90px;
    padding: 5px;
    border-radius: 10px;
    border: 1px solid yellow;
    background: transparent;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.category-btn:hover,
.category-btn.active {
    background: rgba(255, 255, 0, 0.2);
}

.word-pattern {
    display: flex;
    gap: 0.5rem;
    font-family: monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-correct);
    min-height: 2rem;
    letter-spacing: 0.2rem;
}

/* ===== Main Game Container ===== */
.game-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 2rem 1rem;
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
}

/* ===== Game Board ===== */
.board {
    display: grid;
    grid-template-rows: repeat(6, 1fr);
    gap: var(--gap-medium);
    margin-bottom: 2rem;
    padding: 0 0.5rem;
}

.row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--gap-medium);
}

.tile {
    width: 62px;
    height: 62px;
    border: 2px solid var(--color-border);
    background: var(--color-empty);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 0.5rem;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-tile);
    position: relative;
}

.tile.filled {
    border-color: var(--color-filled);
    background: var(--color-filled);
    animation: pop 0.1s ease-in-out;
}

.tile.correct {
    background: var(--color-correct);
    border-color: var(--color-correct);
    color: var(--color-bg-primary);
    box-shadow: var(--glow-correct);
}

.tile.present {
    background: var(--color-present);
    border-color: var(--color-present);
    color: var(--color-text-primary);
    box-shadow: var(--glow-present);
}

.tile.absent {
    background: var(--color-absent);
    border-color: var(--color-absent);
    color: var(--color-text-secondary);
}

/* Example tiles in modal */
.example-tile {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
    margin: 0;
}

.example-row {
    display: flex;
    gap: var(--gap-small);
    margin: 0.5rem 0;
}

/* ===== Animations ===== */
@keyframes pop {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

@keyframes flip {
    0% {
        transform: rotateX(0deg);
    }

    50% {
        transform: rotateX(90deg);
    }

    100% {
        transform: rotateX(0deg);
    }
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    10%,
    30%,
    50%,
    70%,
    90% {
        transform: translateX(-5px);
    }

    20%,
    40%,
    60%,
    80% {
        transform: translateX(5px);
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

.tile.flip {
    animation: flip 0.5s ease-in-out;
}

.row.shake {
    animation: shake 0.5s ease-in-out;
}

.tile.bounce {
    animation: bounce 0.5s ease-in-out;
}

/* ===== Keyboard ===== */
.keyboard {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--gap-medium);
}

.keyboard-row {
    display: flex;
    gap: var(--gap-small);
    justify-content: center;
}

.key {
    background: var(--color-key);
    border: none;
    border-radius: 0.375rem;
    color: var(--color-text-primary);
    font-family: var(--font-main);
    font-size: 0.875rem;
    font-weight: 600;
    padding: 1rem;
    min-width: 43px;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.key:hover {
    background: var(--color-key-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.key:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.key-large {
    min-width: 65px;
    font-size: 0.75rem;
}

.key.correct {
    background: var(--color-correct);
    color: var(--color-bg-primary);
}

.key.present {
    background: var(--color-present);
    color: var(--color-text-primary);
}

.key.absent {
    background: var(--color-absent);
    color: var(--color-text-secondary);
    opacity: 0.5;
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn var(--transition-medium);
}

.modal.active {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-content {
    background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
    border-radius: 1rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--color-border);
    animation: slideUp var(--transition-medium);
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-size: 2rem;
    cursor: pointer;
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    transition: all var(--transition-fast);
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(90deg);
}

.modal-body {
    padding: 1.5rem;
}

.modal-body p {
    margin-bottom: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.modal-body strong {
    color: var(--color-text-primary);
}

.examples {
    margin-top: 1.5rem;
}

.examples p:first-child {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

/* ===== Statistics ===== */
.stats-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

.distribution {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.distribution-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.distribution-label {
    width: 1rem;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.distribution-fill {
    background: var(--color-correct);
    height: 1.5rem;
    min-width: 1.5rem;
    border-radius: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-bg-primary);
    transition: all var(--transition-medium);
}

.distribution-fill.highlight {
    background: var(--color-accent);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.5);
}

.new-game-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--color-accent), #0099cc);
    border: none;
    border-radius: 0.5rem;
    color: var(--color-text-primary);
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 600;
    padding: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.new-game-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
}

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

/* ===== Toast Notification ===== */
.toast {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--color-border);
    opacity: 0;
    transition: all var(--transition-medium);
    z-index: 2000;
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ===== Responsive Design ===== */
@media (max-width: 480px) {
    .title {
        font-size: 1.5rem;
        letter-spacing: 0.2rem;
    }

    .tile {
        width: 56px;
        height: 56px;
        font-size: 1.75rem;
    }

    .key {
        padding: 0.75rem;
        min-width: 32px;
        font-size: 0.75rem;
    }

    .key-large {
        min-width: 50px;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 380px) {
    .tile {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .key {
        padding: 0.5rem;
        min-width: 28px;
        font-size: 0.7rem;
    }
}