@font-face {
    font-family: "Outfit Regular";
    src: url("/fonts/Outfit-Regular.ttf") format("truetype");
}

:root {
    --white: #f0f0f0;
    --black: #0d100e;
    --light-grey: #c2c2c2;
    --dark-grey: #333;
    --dark-grey-acc: #666;
    --green-300: #3b7549;
    --green-400: #428151;
    --green-acc: #2d9748;

    --light-bg: var(--white);
    --dark-bg: var(--black);

    --text-dark: var(--black);
    --text-light: var(--white);

    --font-regular: "Outfit Regular", sans-serif;
}

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

body {
    font-family: var(--font-regular);
    background-color: var(--white);
    color: var(--text-dark);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100dvh;
}

/* --- Header --- */
header {
    padding: 20px 20px;
    position: absolute;
    top: 0;
    width: 100%;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.5rem;
    z-index: 1;
}

.theme-toggle {
    padding: 0.5rem 0.5rem;
    color: var(--dark-grey);
    background: none;
    border: none;
    cursor: pointer;
}
.theme-toggle:disabled {
    opacity: 0.7;
}
.theme-toggle.selected {
    color: var(--light-bg);
    background-color: var(--green-400);
    border-radius: 5px;
}

/* --- Language Menu --- */
#lang-menu {
    position: absolute;
    top: 3rem;
    left: 1rem;
    list-style: none;
    padding: 0.5rem 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 100;
}

#lang-menu.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    animation: popIn 0.25s ease forwards;
}
#lang-menu.hidden {
    animation: popIn 0.25s ease backwards;
}

@keyframes popIn {
    0% {
        opacity: 0;
        transform: translateY(-10px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

#lang-menu li {
    display: flex;
    align-items: center;
    gap: 0.5rem; /* space between emoji and text */
    border-radius: 12px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    color: var(--text-dark);
    transition: background 0.2s ease;
}

#lang-menu li:hover {
    color: var(--text-light);
    background-color: var(--dark-grey);
}

/* --- Main Container --- */
.game-container {
    width: 90dvw;
    max-width: 450px;
    background-color: var(--light-bg);
    border-radius: 16px;
    padding: 25px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

/* --- Screens Management --- */
.screen {
    display: none;
    text-align: center;
}

.screen.active {
    display: block;
}

/* --- Elements --- */
h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--dark-grey);
}

p {
    font-size: 1.1rem;
    margin-bottom: 25px;
}

.button {
    background-color: var(--green-300);
    color: var(--text-light);
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.button:hover {
    background-color: var(--green-acc);
}

/* --- Game Screen --- */
.game-header {
    display: flex;
    justify-content: space-between;
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--dark-grey);
}

#grid-container {
    display: grid;
    gap: 8px;
    width: 100%;
    aspect-ratio: 1 / 1;
    background-color: var(--light-bg);
    border-radius: 10px;
    padding: 8px;
}

/* --- JS created cirles --- */
.grid-item {
    width: 100%;
    height: 100%;
    /* JS sets border-radius */
    cursor: pointer;
    transition: transform 0.1s ease;
}
.grid-item:active {
    transform: scale(0.95);
}

/* --- Game Over Screen --- */
#game-over-screen h2 {
    font-size: 3.5rem;
    color: var(--green-acc);
    margin: 15px 0 25px;
}

/* --- Footer --- */
footer {
    padding: 20px 20px;
    position: absolute;
    bottom: 0;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    z-index: 1;
}

footer p {
    margin-bottom: 0;
    align-self: center;
}

.links {
    display: flex;
    gap: 1rem;
    padding: 0.5rem;
    justify-content: center;
}
.links svg {
    width: 24px;
    height: 24px;
    fill: var(--dark-grey);
}
.links a:hover svg {
    fill: var(--green-acc);
    transition: fill 0.3s ease;
    scale: 110%;
}

/* --- DARK THEME --- */
body.dark-theme {
    background-color: var(--dark-bg);
    color: var(--light-grey);
}
body.dark-theme h1 {
    color: var(--white);
}

body.dark-theme button {
    color: var(--text-dark);
}

body.dark-theme .game-container {
    background-color: var(--dark-bg);
    box-shadow: 0 6px 15px rgba(255, 255, 255, 0.1);
}

body.dark-theme .theme-toggle {
    color: var(--light-grey);
}
body.dark-theme .theme-toggle.selected {
    color: var(--dark-bg);
}

body.dark-theme .game-header {
    color: var(--light-grey);
}

body.dark-theme #grid-container {
    background-color: var(--dark-bg);
}

body.dark-theme .links svg {
    fill: var(--light-grey);
}
body.dark-theme .links svg:hover {
    fill: var(--green-400);
}

body.dark-theme #lang-menu li {
    color: var(--text-light);
}

body.dark-theme #lang-menu li:hover {
    color: var(--text-dark);
    background-color: var(--light-grey);
}

/* --- THEME TRANSITION --- */
body,
h1,
button,
.game-container,
.game-header,
.theme-toggle,
#grid-container,
.links svg {
    transition: background-color 0.4s ease, color 0.4s ease, fill 0.4s ease;
}