/* Neomorphic Sudoku Game Styles */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600&display=swap');

:root {
    --background: #e0e5ec;
    --text-color: #4d5974;
    --shadow-dark: #bec3c9;
    --shadow-light: #ffffff;
    --primary: #6c5ce7;
    /*--primary-light: #8075e5;*/
    --secondary: #00b894;

    /* Cell colors */
    --valid: #00b894;
    --invalid: #ff6b6b;

    /* Notification */
    --error: #ff6b6b;
    --success: #00b894;
    --info: #0984e3;
    --warning: #fdcb6e;
}

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

body {
    font-family: "Poppins", Monospaced, sans-serif;
    background-color: var(--background);
    color: var(--text-color);
    min-height: 100dvh;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    max-width: 600px;
}

h1 {
    font-weight: 300;
    font-size: 2rem;
    margin-bottom: 0.5em;
    text-align: center;
    text-shadow: 2px 2px 3px var(--shadow-dark), -2px -2px 3px var(--shadow-light);
}

/* Sudoku Grid */
.sudoku-grid, .subgrid {
    display: grid;
    grid-template: repeat(3, 1fr) / repeat(3, 1fr);
    background-color: var(--background);
}

.sudoku-grid {
    margin: 0 auto;
    gap: 6px;
    padding: 10px;
    border-radius: 15px;
    box-shadow: 10px 10px 20px var(--shadow-dark), -10px -10px 20px var(--shadow-light);
}

.subgrid {
    gap: 3px;
    padding: 5px;
    border-radius: 10px;
    box-shadow: inset 2px 2px 5px var(--shadow-dark), inset -2px -2px 5px var(--shadow-light);
}

/* Cells */
.cell {
    width: 40px;
    height: 40px;
    padding: 1px;
    font-size: 20px;
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: 10px;
    cursor: default;
    caret-color: transparent;
    color: var(--text-color);
    background-color: var(--background);
    box-shadow: inset 2px 2px 5px var(--shadow-dark), inset -2px -2px 5px var(--shadow-light);
    transition: all 0.2s ease;
}

.cell {
    /* Remove spinner buttons from number input */
    &::-webkit-inner-spin-button, &::-webkit-outer-spin-button {
        -webkit-appearance: none;
    }

    /* Remove default outline, add custom focus styles */
    &:focus {
        outline: none;
        color: var(--primary) !important;
        box-shadow: inset 4px 4px 8px var(--shadow-dark), inset -4px -4px 8px var(--shadow-light);
        background-color: color-mix(in srgb, var(--shadow-dark) 20%, transparent);
    }

    /* Keyboard focus selection, add custom focus outline */
    &:focus.keyboard-selected {
        outline: 1px solid var(--primary);
    }

    /* Initial cells */
    &.initial {
        font-weight: 600;
        box-shadow: none;
    }

    /* Valid cells */
    &.valid {
        color: var(--valid);
    }

    /* Invalid cells */
    &.invalid {
        color: var(--invalid);
    }

    /* Same number cells */
    &.same-number {
        box-shadow: inset -2px 2px 5px var(--shadow-dark), inset 2px -2px 5px var(--shadow-light);
        background-color: color-mix(in srgb, var(--primary) 10%, transparent);
    }
}

/* Number Pad */
.number-pad {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 15px;
    padding: 15px;
    width: 100%;
    max-width: 440px;
    border-radius: 20px;
    background-color: var(--background);
    box-shadow: 5px 5px 10px var(--shadow-dark), -5px -5px 10px var(--shadow-light);
}

.num-btn {
    width: 100%;
    aspect-ratio: 1/1;
    font-size: 1.5rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    border-radius: 50%;

    &.erase {
        color: var(--invalid);
    }
}

/* Controls */
.controls {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.game-buttons {
    display: flex;
    justify-content: space-around;
}

/* Game buttons, and number pad buttons */
button {
    padding: 10px 20px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    background-color: var(--background);
    color: var(--text-color);
    box-shadow: 6px 6px 12px var(--shadow-dark), -6px -6px 12px var(--shadow-light);
    transition: all 0.2s ease;

    &:hover {
        box-shadow: 4px 4px 8px var(--shadow-dark), -4px -4px 8px var(--shadow-light);
    }

    &:active {
        box-shadow: inset 4px 4px 8px var(--shadow-dark), inset -4px -4px 8px var(--shadow-light);
        transform: translateY(1px);
    }
}

button {
    &#newGameBtn {
        color: var(--primary);
    }

    &#checkSolutionBtn {
        color: var(--secondary);
    }

    &#solveBtn {
        color: var(--info);
    }

    &#showInfoBtn {
        width: 30%;
        max-width: 100%;
        margin: 0 auto;
    }
}

/* Difficulty selector */
select {
    padding: 8px 16px;
    border-radius: 8px;
    border: none;
    background-color: var(--background);
    color: var(--text-color);
    font-family: 'Poppins', Monospaced, sans-serif;
    box-shadow: inset 2px 2px 5px var(--shadow-dark), inset -2px -2px 5px var(--shadow-light);
    appearance: none;
    cursor: pointer;
}

/* Info Container */
.info-container {
    width: 100%;
    max-width: 500px;
    margin-top: 20px;
    padding: 20px;
    border-radius: 20px;
    background: var(--background);
    box-shadow: 20px 20px 50px var(--shadow-dark), -20px -20px 50px var(--shadow-light);

    h2 {
        color: var(--primary);
        font-size: 1.2rem;
    }

    hr {
        margin: 10px 0;
        border: none;
        height: 1px;
        background-color: var(--shadow-dark);
    }
}

.score-board {
    margin-bottom: 20px;
    padding: 15px;
    border-radius: 20px;
    background: var(--background);
    box-shadow: inset 2px 2px 5px var(--shadow-dark), inset -2px -2px 5px var(--shadow-light);

    .win-badge {
        font-size: inherit;
        color: gold;
        font-weight: bold;
        text-shadow: 0 0 10px rgba(255, 215, 0, 0.7);
        transition: all 1s ease;
        cursor: pointer;

        &:hover {
            text-shadow: 0 0 15px gold, 0 0 25px gold;
        }
    }
}

.star-particle {
    position: fixed;
    pointer-events: none;
    color: gold;
    font-size: 12px;
    text-shadow: 0 0 5px rgba(255, 215, 0, 0.7);
    user-select: none;
    z-index: 1000;
    will-change: transform, opacity;

    &.burst {
        text-shadow: 0 0 15px gold, 0 0 25px rgba(255, 215, 0, 0.9);
        z-index: 1001;
    }
}

/* Notifications */
.notification-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 1000;
}

.notification {
    opacity: 0;
    min-width: 250px;
    max-width: 350px;
    padding: 15px 20px;
    border-radius: 10px;
    color: var(--text-color);
    background-color: var(--background);
    box-shadow: 2px 2px 6px var(--shadow-dark), -2px -2px 6px var(--shadow-light);
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.notification {
    &.show {
        opacity: 1;
        transform: translateY(0);
    }

    &.success {
        /*border-left: 4px solid var(--success);*/
        background-color: color-mix(in srgb, var(--success) 10%, transparent);
    }

    &.error {
        /*border-left: 4px solid var(--error);*/
        background-color: color-mix(in srgb, var(--error) 10%, transparent);
    }

    &.info {
        /*border-left: 4px solid var(--info);*/
        background-color: color-mix(in srgb, var(--info) 10%, transparent);
    }

    &.warning {
        /*border-left: 4px solid var(--warning);*/
        background-color: color-mix(in srgb, var(--warning) 10%, transparent);
    }
}

/* Responsive styles */
@media (max-width: 600px) {
    .cell {
        width: 35px;
        height: 35px;
        font-size: 18px;
    }

    .notification {
        min-width: 200px;
        max-width: 300px;
        padding: 10px 15px;
        font-size: 0.8rem;
    }
}

@media (max-width: 400px) {
    h1 {
        font-size: 1.5rem;
    }

    .game-container {
        gap: 15px;
    }

    .sudoku-grid {
        gap: 3px;
        padding: 5px;
    }

    .subgrid {
        gap: 0;
    }

    .cell {
        width: 30px;
        height: 30px;
        font-size: 16px;
    }

    .number-pad {
        gap: 8px;
        padding: 8px;
        max-width: 300px;
    }

    .num-btn {
        font-size: 1rem;
    }

    button {
        padding: 6px 12px;
        font-size: 0.8rem;
    }

    .notification {
        min-width: 150px;
        max-width: 250px;
        padding: 5px 10px;
        font-size: 0.7rem;
    }
}