.study-timer-widget,
.study-timer-restore,
.study-timer-dock {
    position: fixed;
    right: 22px;
    z-index: 1400;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
    --timer-accent-bg: rgba(10, 132, 255, 0.12);
    --timer-accent-border: rgba(10, 132, 255, 0.24);
    --timer-accent-text: #075985;
    --timer-accent-solid: #0a84ff;
    --timer-accent-glow: rgba(10, 132, 255, 0.22);
}

.study-timer-widget {
    bottom: 22px;
    width: min(320px, calc(100vw - 28px));
    display: grid;
    gap: 10px;
    padding: 14px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--timer-accent-border);
    box-shadow:
        0 20px 54px rgba(15, 23, 42, 0.14),
        0 0 0 5px var(--timer-accent-glow);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    cursor: grab;
    touch-action: none;
}

.study-timer-widget.is-dragging {
    cursor: grabbing;
    transition: none;
}

.study-timer-restore.is-dragging {
    cursor: grabbing;
    transition: none;
}

.study-timer-widget[hidden],
.study-timer-restore[hidden],
.study-timer-dock[hidden] {
    display: none;
}

.study-timer-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.study-timer-label {
    display: block;
    color: var(--timer-accent-text);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.study-timer-head strong {
    display: block;
    margin-top: 4px;
    color: #111318;
    font-size: 28px;
    font-weight: 850;
    letter-spacing: -0.05em;
}

.study-timer-hide,
.study-timer-actions button,
.study-timer-restore,
.study-timer-dock {
    border: 1px solid var(--timer-accent-border);
    border-radius: 999px;
    background: var(--timer-accent-bg);
    color: var(--timer-accent-text);
    box-shadow: none;
    font-size: 12px;
    font-weight: 850;
    cursor: pointer;
    transition: transform 0.16s ease, background 0.16s ease, border-color 0.16s ease;
}

.study-timer-hide {
    padding: 7px 10px;
    opacity: 0;
    position: relative;
    transform: translateY(2px);
}

.study-timer-widget:hover .study-timer-hide,
.study-timer-widget:focus-within .study-timer-hide {
    opacity: 1;
    transform: translateY(0);
}

.study-timer-hide::after {
    content: "Hide timer";
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    width: max-content;
    padding: 7px 10px;
    border-radius: 999px;
    background: rgba(17, 19, 24, 0.82);
    color: white;
    font-size: 12px;
    font-weight: 800;
    opacity: 0;
    transform: translateY(-3px);
    pointer-events: none;
    transition: opacity 0.16s ease, transform 0.16s ease;
}

.study-timer-hide:hover::after,
.study-timer-hide:focus-visible::after {
    opacity: 1;
    transform: translateY(0);
}

.study-timer-actions {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
}

.study-timer-actions button {
    min-height: 34px;
    padding: 8px 10px;
}

.study-timer-actions button:first-child {
    background: linear-gradient(135deg, var(--timer-accent-solid), color-mix(in srgb, var(--timer-accent-solid) 76%, white));
    border-color: var(--timer-accent-border);
    color: white;
}

.study-timer-hide:hover,
.study-timer-actions button:hover {
    transform: translateY(-1px);
    background: color-mix(in srgb, var(--timer-accent-bg) 72%, white);
}

.study-timer-restore:hover {
    background: color-mix(in srgb, var(--timer-accent-bg) 72%, white);
}

.study-timer-dock:hover,
.study-timer-dock:focus-visible {
    opacity: 1;
    transform: translateY(-1px);
    background: rgba(17, 19, 24, 0.86);
    color: white;
}

.study-timer-actions button:first-child:hover {
    background: linear-gradient(135deg, color-mix(in srgb, var(--timer-accent-solid) 88%, black), var(--timer-accent-solid));
}

.study-timer-today {
    padding: 8px 10px;
    border-radius: 16px;
    background: var(--timer-accent-bg);
    color: var(--timer-accent-text);
    font-size: 13px;
    font-weight: 800;
}

.study-timer-widget select,
.study-timer-widget input {
    width: 100%;
    min-height: 38px;
    border-radius: 16px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: rgba(248, 250, 252, 0.86);
    color: #111318;
    padding: 8px 10px;
    font-size: 13px;
    outline: none;
}

.study-timer-widget select:focus,
.study-timer-widget input:focus {
    border-color: var(--timer-accent-border);
    box-shadow: 0 0 0 4px var(--timer-accent-bg);
}

.study-timer-color-row {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 10px;
    align-items: center;
    color: #475467;
    font-size: 12px;
    font-weight: 850;
}

.study-timer-restore {
    bottom: 22px;
    min-width: 78px;
    min-height: 42px;
    padding: 13px 20px;
    background: linear-gradient(135deg, var(--timer-accent-solid), color-mix(in srgb, var(--timer-accent-solid) 78%, white));
    color: white;
    border-color: var(--timer-accent-border);
    box-shadow:
        0 18px 38px rgba(15, 23, 42, 0.18),
        0 0 0 5px var(--timer-accent-glow);
    font-size: 14px;
    cursor: grab;
    touch-action: none;
    border-radius: 999px;
    transform: translateY(0);
}

.study-timer-restore.is-bubble {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    letter-spacing: 0;
    border-radius: 999px;
}

.study-timer-restore.is-bubble.is-running::after {
    content: attr(data-timer-preview);
    position: absolute;
    left: 50%;
    bottom: calc(100% + 12px);
    transform: translate(-50%, 6px);
    min-width: 112px;
    padding: 8px 11px;
    border-radius: 999px;
    background: rgba(17, 19, 24, 0.86);
    color: white;
    box-shadow: 0 12px 26px rgba(15, 23, 42, 0.18);
    font-variant-numeric: tabular-nums;
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 0.01em;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.16s ease, transform 0.16s ease;
}

.study-timer-restore.is-bubble.is-running:hover::after,
.study-timer-restore.is-bubble.is-running:focus-visible::after {
    opacity: 1;
    transform: translate(-50%, 0);
}

.study-timer-dock {
    z-index: 1401;
    padding: 8px 11px;
    border-color: rgba(17, 19, 24, 0.08);
    background: rgba(17, 19, 24, 0.72);
    color: white;
    font-size: 11px;
    opacity: 0;
    pointer-events: none;
}

.study-timer-dock.is-visible,
.study-timer-dock:hover,
.study-timer-dock:focus-visible {
    opacity: 1;
    pointer-events: auto;
}

.study-timer-restore.is-left-tab {
    min-width: 38px;
    min-height: 96px;
    padding: 13px 9px;
    writing-mode: vertical-rl;
    letter-spacing: 0.03em;
    border-radius: 0 16px 16px 0;
    transform: translateX(-4px) rotate(180deg);
}

.study-timer-restore.is-right-tab {
    min-width: 38px;
    min-height: 96px;
    padding: 13px 9px;
    writing-mode: vertical-rl;
    letter-spacing: 0.03em;
    border-radius: 16px 0 0 16px;
    transform: translateX(4px);
}

.study-timer-restore.is-left-tab:hover {
    transform: translateX(0) rotate(180deg);
}

.study-timer-restore.is-right-tab:hover {
    transform: translateX(0);
}

.study-timer-tooltip {
    position: absolute;
    right: 14px;
    top: -34px;
    padding: 7px 10px;
    border-radius: 999px;
    background: rgba(17, 19, 24, 0.78);
    color: white;
    font-size: 12px;
    font-weight: 800;
    opacity: 0;
    transform: translateY(4px);
    pointer-events: none;
    transition: opacity 0.16s ease, transform 0.16s ease;
}

.study-timer-widget:hover .study-timer-tooltip {
    opacity: 1;
    transform: translateY(0);
}

.study-timer-celebration {
    position: fixed;
    inset: 0;
    z-index: 1500;
    display: grid;
    place-items: center;
    pointer-events: none;
    animation: studyTimerCelebrationPop 2.6s ease forwards;
}

.study-timer-celebration::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    background: rgba(15, 23, 42, 0.28);
    backdrop-filter: blur(2px);
}

.study-timer-celebration strong {
    z-index: 2;
    max-width: min(760px, calc(100vw - 32px));
    color: white;
    font-size: clamp(36px, 7vw, 82px);
    font-weight: 900;
    text-align: center;
    text-shadow:
        0 8px 28px rgba(15, 23, 42, 0.42),
        0 0 34px var(--timer-accent-glow, rgba(10, 132, 255, 0.55));
}

.study-timer-celebration span {
    position: fixed;
    left: var(--x);
    top: -8vh;
    width: 12px;
    height: 22px;
    border-radius: 4px;
    background: var(--timer-accent-solid, #0a84ff);
    z-index: 1;
    animation: studyTimerConfettiBurst 2.5s cubic-bezier(0.18, 0.78, 0.32, 1) forwards;
}

.study-timer-celebration span:nth-child(2) { --x: 8vw; --drift: 18vw; --r: 420deg; background: #0a84ff; }
.study-timer-celebration span:nth-child(3) { --x: 20vw; --drift: -10vw; --r: -380deg; background: #34c759; animation-delay: 0.08s; }
.study-timer-celebration span:nth-child(4) { --x: 34vw; --drift: 14vw; --r: 500deg; background: #ff9500; animation-delay: 0.02s; }
.study-timer-celebration span:nth-child(5) { --x: 48vw; --drift: -16vw; --r: -460deg; background: #ec4899; animation-delay: 0.11s; }
.study-timer-celebration span:nth-child(6) { --x: 62vw; --drift: 12vw; --r: 420deg; background: #14b8a6; animation-delay: 0.05s; }
.study-timer-celebration span:nth-child(7) { --x: 76vw; --drift: -12vw; --r: -520deg; background: #7e57c2; animation-delay: 0.14s; }
.study-timer-celebration span:nth-child(8) { --x: 88vw; --drift: 8vw; --r: 380deg; background: #ff453a; animation-delay: 0.03s; }
.study-timer-celebration span:nth-child(9) { --x: 96vw; --drift: -18vw; --r: -420deg; background: #ffcc00; animation-delay: 0.09s; }

@keyframes studyTimerCelebrationPop {
    0% {
        opacity: 0;
        transform: scale(0.94);
    }
    12% {
        opacity: 1;
        transform: scale(1);
    }
    78% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: scale(1.02);
    }
}

@keyframes studyTimerConfettiBurst {
    0% {
        opacity: 0;
        transform: translate3d(0, 0, 0) scale(0.8) rotate(0deg);
    }
    12% {
        opacity: 1;
    }
    72% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translate3d(var(--drift), 108vh, 0) scale(1.05) rotate(var(--r));
    }
}

@media (max-width: 700px) {
    .study-timer-widget,
    .study-timer-restore {
        right: 14px;
        bottom: 14px;
    }

    .study-timer-widget {
        width: calc(100vw - 28px);
    }
}