/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    background-color: #121212;
    color: #e0e0e0;
    margin: 0;
}

#container {
    max-width: 1500px;
    margin: 0 auto;
    padding: 20px;
    background-color: #1e1e1e;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    border-radius: 8px;
}

h1 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 20px;
    color: #ffffff;
}

h2 {
    font-size: 1.8rem;
    color: #bb86fc;
    margin-top: 30px;
}

p {
    margin-bottom: 20px;
    color: #b0b0b0;
    line-height: 1.8;
}

a {
    color: #bb86fc;
    text-decoration: none !important;
    transition: color 0.3s ease;
}

a:hover {
    color: #ffffff;
    text-decoration: underline;
}

/* Card container */
.card {
    width: 100%;
    min-height: 254px;
    border-radius: 4px;
    background: #212121;
    display: flex;
    gap: 12px;
    padding: 1.2em;
    flex-wrap: wrap;
    align-items: flex-start;
    overflow-y: auto;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

/* Individual card items */
.card p {
    flex: 1 1 140px;
    height: 100%;
    margin: 0;
    overflow: hidden;
    cursor: pointer;
    border-radius: 6px;
    background: #212121;
    border: 1px solid #ff5a91;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: flex 0.5s ease, background-color 0.3s ease, border-color 0.3s ease,
        box-shadow 0.3s ease;
    position: relative;
    user-select: none;
}

.card p:hover {
    flex: 5 1 320px;
    background-color: #2e2e2e;
    border-color: #ff3377;
    box-shadow: 0 0 15px 2px rgba(255, 85, 140, 0.8);
    z-index: 10;
    /* keep hovered card on top */
}

/* Text inside card */
.card p span {
    min-width: 14em;
    padding: 0.5em;
    text-align: center;
    transform: rotate(-90deg);
    transition: transform 0.5s ease, color 0.3s ease;
    text-transform: uppercase;
    color: #ff568e;
    letter-spacing: 0.1em;
}

.card p:hover span {
    transform: rotate(0);
    color: #ff2a7b;
}

/* Links inside cards */
.card p a {
    font-weight: 600;
    color: inherit;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
    display: block;
    text-align: center;
}

/* Responsive typography and layout for tablets and mobiles */
@media (max-width: 999px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.6rem;
    }

    p {
        font-size: 0.9rem;
    }

    .card {
        flex-direction: column;
        min-height: auto;
        height: auto;
    }

    .card p {
        flex: none;
        width: 100%;
        margin-bottom: 12px;
        border-radius: 8px;
    }

    .card p span {
        transform: rotate(0);
        min-width: auto;
        padding: 0.75em;
    }

    .card p:hover {
        flex: none;
        background-color: #2e2e2e;
        box-shadow: none;
    }
}

/* Responsive adjustments for mobile screens */
@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.4rem;
    }

    p {
        font-size: 0.8rem;
    }

    #container {
        padding: 10px;
    }

    .card {
        flex-direction: column;
        gap: 10px;
    }

    .card p {
        flex: none;
        width: 100%;
        margin-bottom: 10px;
    }

    .card p span {
        transform: rotate(0);
        font-size: 0.85rem;
    }

    .card p:hover {
        flex: none;
        box-shadow: none;
    }
}

/* Button styles remain unchanged */

.btn-github {
    cursor: pointer;
    display: flex;
    gap: 0.5rem;
    border: none;
    transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
    border-radius: 100px;
    font-weight: 800;
    place-content: center;
    padding: 0.75rem 1rem;
    font-size: 0.825rem;
    line-height: 1rem;
    background-color: rgba(0, 0, 0, 0.4);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04),
        inset 0 0 0 1px rgba(255, 255, 255, 0.04);
    color: #bb86fc;
}

.btn-github:hover {
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08),
        inset 0 0 0 1px rgba(252, 232, 3, 0.08);
    color: #fff;
    transform: translateY(-0.25rem);
    background-color: rgba(0, 0, 0, 0.5);
}

.center {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: row;
    gap: 1rem;
}

.btn-donate {
    --clr-font-main: hsla(0 0% 20% / 100);
    --btn-bg-1: hsla(194 100% 69% / 1);
    --btn-bg-2: hsla(217 100% 56% / 1);
    --btn-bg-color: hsla(360 100% 100% / 1);
    --radii: 0.5em;
    cursor: pointer;
    padding: 0.9em 1.4em;
    min-width: 120px;
    min-height: 44px;
    font-size: var(--size, 1rem);
    font-weight: 500;
    transition: 0.8s;
    background-size: 280% auto;
    background-image: linear-gradient(325deg,
            var(--btn-bg-2) 0%,
            var(--btn-bg-1) 55%,
            var(--btn-bg-2) 90%);
    border: none;
    border-radius: var(--radii);
    color: var(--btn-bg-color);
    box-shadow: 0 0 20px rgba(71, 184, 255, 0.5), 0 5px 5px -1px rgba(58, 125, 233, 0.25),
        inset 4px 4px 8px rgba(175, 230, 255, 0.5),
        inset -4px -4px 8px rgba(19, 95, 216, 0.35);
}

.btn-donate:hover {
    background-position: right top;
}

.btn-donate:is(:focus, :focus-visible, :active) {
    outline: none;
    box-shadow: 0 0 0 3px var(--btn-bg-color), 0 0 0 6px var(--btn-bg-2);
}

@media (prefers-reduced-motion: reduce) {
    .btn-donate {
        transition: linear;
    }
}