/* BLACK (DEFAULT) */
.f1re {
    font-size: 24px;
    font-weight: 700;
    text-align: center;

    background: linear-gradient(270deg,
        #bfbfbf,
        #8c8c8c,
        #595959,
        #bfbfbf
    );

    background-size: 400%;
    animation: gradientMove 6s infinite linear;

    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* RED */
.f1re-red {
    background-image: linear-gradient(270deg,
            #ff2d2d,
            #ff5f5f,
            #ff9b9b,
            #ff2d2d);
}

body.theme-red {
    background:
        radial-gradient(circle at center,
            rgba(255, 0, 0, 0.12) 0%,
            rgba(140, 0, 0, 0.06) 25%,
            rgba(0, 0, 0, 0) 60%),

        radial-gradient(circle at top,
            rgba(255, 40, 40, 0.08) 0%,
            transparent 45%),

        linear-gradient(180deg,
            #120000 0%,
            #080000 45%,
            #000000 100%);
}

/* BLUE */
.f1re-blue {
    background-image: linear-gradient(270deg,
            #3b82f6,
            #60a5fa,
            #93c5fd,
            #3b82f6);
}

body.theme-blue {
    background:
        radial-gradient(circle at center,
            rgba(0, 120, 255, 0.14) 0%,
            rgba(0, 60, 180, 0.07) 25%,
            rgba(0, 0, 0, 0) 60%),

        radial-gradient(circle at top,
            rgba(80, 160, 255, 0.08) 0%,
            transparent 45%),

        linear-gradient(180deg,
            #020817 0%,
            #000814 45%,
            #000000 100%);
}

/* GREEN */
.f1re-green {
    background-image: linear-gradient(270deg,
            #22c55e,
            #4ade80,
            #86efac,
            #22c55e);
}

body.theme-green {
    background:
        radial-gradient(circle at center,
            rgba(0, 255, 120, 0.12) 0%,
            rgba(0, 140, 60, 0.06) 25%,
            rgba(0, 0, 0, 0) 60%),

        radial-gradient(circle at top,
            rgba(80, 255, 160, 0.08) 0%,
            transparent 45%),

        linear-gradient(180deg,
            #02120a 0%,
            #001108 45%,
            #000000 100%);
}

/* PURPLE */
.f1re-purple {
    background-image: linear-gradient(270deg,
            #9333ea,
            #a855f7,
            #d8b4fe,
            #9333ea);
}

body.theme-purple {
    background:
        radial-gradient(circle at center,
            rgba(180, 80, 255, 0.14) 0%,
            rgba(100, 0, 180, 0.07) 25%,
            rgba(0, 0, 0, 0) 60%),

        radial-gradient(circle at top,
            rgba(210, 120, 255, 0.08) 0%,
            transparent 45%),

        linear-gradient(180deg,
            #0b0214 0%,
            #06000d 45%,
            #000000 100%);
}

/* YELLOW */
.f1re-yellow {
    background-image: linear-gradient(270deg,
            #eaea33,
            #eaf755,
            #f8feb4,
            #deea33);
}

body.theme-yellow {
    background:
        radial-gradient(circle at center,
            rgba(240, 255, 80, 0.14) 0%,
            rgba(177, 180, 0, 0.07) 25%,
            rgba(0, 0, 0, 0) 60%),

        radial-gradient(circle at top,
            rgba(239, 255, 120, 0.08) 0%,
            transparent 45%),

        linear-gradient(180deg,
            #141302 0%,
            #0d0d00 45%,
            #000000 100%);
}

/* ANIMATIONS */
@keyframes gradientMove {
    0% {
        background-position: 0%
    }

    100% {
        background-position: 400%
    }
}

/* THEME SWITCHER */
.theme-switcher {
    position: fixed;
    left: 20px;
    bottom: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    pointer-events: none;
    margin: 1px;

    border-radius: 33px;
    background-color: rgba(255, 255, 255, 0.1);
}

.theme-switcher .theme-toggle-btn {
    pointer-events: auto;
    width: 56px;
    height: 56px;
    border: none;
    border-radius: 50%;
    backdrop-filter: blur(10px);
    background-color: transparent;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 16px 35px rgba(0, 0, 0, 0.3);
}

.theme-switcher .theme-options {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding-top: 10px;
    border-radius: 22px;
    pointer-events: auto;
}

.theme-switcher.open .theme-options {
    display: flex;
}

.theme-option {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.18);
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.theme-option:hover {
    transform: scale(1.05);
    border-color: rgba(255, 255, 255, 0.45);
}

.theme-option.red {
    background: rgb(163, 0, 0);
}

.theme-option.blue {
    background: rgb(0, 120, 255);
}

.theme-option.green {
    background: rgb(0, 255, 120);
}

.theme-option.purple {
    background: rgb(119, 1, 179);
}

.theme-option.yellow {
    background: rgb(179, 179, 1);
}

.theme-option.default {
    background: rgb(0, 0, 0);
}