:root {
    --teal: #00e0b8;
    --teal-deep: #00b894;
    --amber: #f5b942;
    --sky: #5cb0ff;
    --violet: #b794ff;
    --rose: #ff6b7a;
    --bg: #071018;
    --bg-2: #0c1822;
    --card: rgba(14, 28, 38, 0.72);
    --card-border: rgba(255, 255, 255, 0.08);
    --text: #eef6fb;
    --muted: #8ea0b0;
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
    --radius: 22px;
    --phase: var(--teal);
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

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

html, body {
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: Outfit, -apple-system, BlinkMacSystemFont, sans-serif;
    -webkit-font-smoothing: antialiased;
}

body {
    min-height: 100dvh;
    overflow-x: hidden;
}

body.phase-warmup { --phase: var(--amber); }
body.phase-work { --phase: var(--teal); }
body.phase-rest { --phase: var(--sky); }
body.phase-cooldown { --phase: var(--violet); }
body.phase-done { --phase: var(--amber); }

.ambient {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
    background:
        radial-gradient(1200px 700px at 50% -10%, rgba(0, 224, 184, 0.12), transparent 55%),
        linear-gradient(180deg, #08131c 0%, #071018 100%);
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(50px);
    opacity: 0.45;
    will-change: transform;
}

.orb-a {
    width: 280px; height: 280px;
    background: #00e0b8;
    top: -80px; right: -60px;
    animation: drift 18s ease-in-out infinite;
}
.orb-b {
    width: 340px; height: 340px;
    background: #1e6bff;
    bottom: -120px; left: -80px;
    animation: drift 22s ease-in-out infinite reverse;
}
.orb-c {
    width: 180px; height: 180px;
    background: #7c5cff;
    top: 42%; left: 55%;
    animation: drift 16s ease-in-out infinite;
}

@keyframes drift {
    0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
    50% { transform: translate3d(30px, -24px, 0) scale(1.08); }
}

.app {
    position: relative;
    z-index: 1;
    width: min(520px, 100%);
    margin: 0 auto;
    padding: calc(18px + var(--safe-top)) 18px calc(28px + var(--safe-bottom));
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.logo {
    height: 72px;
    object-fit: contain;
    filter: drop-shadow(0 8px 18px rgba(0, 224, 184, 0.25));
}

.top-actions { display: flex; gap: 8px; }

.icon-btn {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--card-border);
    background: rgba(255,255,255,0.04);
    color: var(--text);
    display: grid;
    place-items: center;
    cursor: pointer;
    transition: transform 0.25s cubic-bezier(.22,1,.36,1), background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.icon-btn:hover { transform: translateY(-1px); border-color: rgba(0,224,184,0.45); }
.icon-btn:active { transform: scale(0.96); }
.icon-btn.active {
    background: rgba(0, 224, 184, 0.18);
    border-color: rgba(0, 224, 184, 0.55);
    color: var(--teal);
}

.view { display: none; }
.view.active {
    display: block;
    animation: rise 0.55s cubic-bezier(.22,1,.36,1);
}

@keyframes rise {
    from { opacity: 0; transform: translate3d(0, 16px, 0) scale(0.985); }
    to { opacity: 1; transform: translate3d(0, 0, 0) scale(1); }
}

.card {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.field-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px;
    border-radius: 16px;
    background: rgba(255,255,255,0.03);
    border: 1px solid transparent;
    border-left: 3px solid var(--phase-color, var(--teal));
}

.field.warmup { --phase-color: var(--amber); }
.field.work { --phase-color: var(--teal); }
.field.rest { --phase-color: var(--sky); }
.field.rounds { --phase-color: #9aa8b5; }
.field.cooldown { --phase-color: var(--violet); grid-column: 1 / -1; }

.field span {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--muted);
}

.field small {
    font-size: 11px;
    color: var(--muted);
}

.stepper {
    display: grid;
    grid-template-columns: 36px 1fr 36px;
    align-items: center;
    gap: 6px;
}

.stepper button {
    height: 36px;
    border: 0;
    border-radius: 10px;
    background: rgba(255,255,255,0.06);
    color: var(--text);
    font-size: 20px;
    cursor: pointer;
    transition: transform 0.2s cubic-bezier(.22,1,.36,1), background 0.2s ease;
}

.stepper button:hover { background: rgba(0,224,184,0.18); }
.stepper button:active { transform: scale(0.92); }

.stepper input {
    width: 100%;
    height: 42px;
    border: 0;
    background: transparent;
    color: var(--text);
    font: 700 22px/1 Outfit, sans-serif;
    text-align: center;
    outline: none;
    font-variant-numeric: tabular-nums;
}

.summary {
    margin: 16px 0 14px;
    text-align: center;
    color: var(--muted);
    font-weight: 600;
}

button, input { touch-action: manipulation; }

.btn {
    width: 100%;
    height: 56px;
    border: 0;
    border-radius: 16px;
    font: 700 16px Outfit, sans-serif;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: transform 0.25s cubic-bezier(.22,1,.36,1), box-shadow 0.25s ease, filter 0.25s ease;
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(0.98); }

.btn-primary {
    background: linear-gradient(135deg, var(--teal), var(--teal-deep));
    color: #04231c;
    box-shadow: 0 10px 28px rgba(0, 224, 184, 0.28);
}

.btn-secondary {
    background: rgba(92, 176, 255, 0.16);
    color: #d7ecff;
    width: auto;
    padding: 0 18px;
    height: 48px;
}

.btn-danger {
    background: linear-gradient(135deg, #ff7a86, #e24b5a);
    color: white;
    box-shadow: 0 10px 24px rgba(226, 75, 90, 0.28);
}

.sessions-card { margin-top: 16px; }
.sessions-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 6px;
}
.sessions-head h2 { font-size: 16px; font-weight: 800; }
.sessions-hint { color: var(--muted); font-size: 13px; margin-bottom: 14px; }

.sync-pill {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--teal);
    background: rgba(0,224,184,0.12);
    border: 1px solid rgba(0,224,184,0.22);
    border-radius: 999px;
    padding: 5px 9px;
}
.sync-pill.error { color: var(--rose); background: rgba(255,107,122,0.12); border-color: rgba(255,107,122,0.25); }

.session-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 14px;
}

.session-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
    align-items: center;
    padding: 12px 12px 12px 14px;
    border-radius: 14px;
    background: rgba(255,255,255,0.04);
    border: 1px solid transparent;
    animation: rise 0.4s cubic-bezier(.22,1,.36,1) both;
    transition: transform 0.25s cubic-bezier(.22,1,.36,1), border-color 0.25s ease, background 0.25s ease;
}

.session-item .load {
    border: 0;
    background: transparent;
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: pointer;
    padding: 0;
}

.session-item:hover {
    transform: translateY(-1px);
    border-color: rgba(0,224,184,0.35);
    background: rgba(0,224,184,0.08);
}

.session-item strong { display: block; font-size: 15px; }
.session-item em {
    font-style: normal;
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
}

.session-item .trash {
    width: 36px;
    height: 36px;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    transition: color 0.2s ease, background 0.2s ease;
}
.session-item .trash:hover { color: var(--rose); background: rgba(255,107,122,0.12); }

.empty-sessions {
    color: var(--muted);
    font-size: 13px;
    padding: 8px 2px 4px;
}

.save-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
}

.save-row input {
    height: 48px;
    border-radius: 14px;
    border: 1px solid var(--card-border);
    background: rgba(255,255,255,0.04);
    color: var(--text);
    padding: 0 14px;
    font: 500 15px Outfit, sans-serif;
    outline: none;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.save-row input:focus {
    border-color: rgba(0,224,184,0.55);
    box-shadow: 0 0 0 4px rgba(0,224,184,0.12);
}

.timer-shell {
    text-align: center;
    padding: 28px 18px 22px;
    border-radius: 28px;
    background: rgba(10, 22, 30, 0.78);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.ring-wrap {
    position: relative;
    width: min(280px, 78vw);
    margin: 0 auto 18px;
    aspect-ratio: 1;
}

.ring {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
    filter: drop-shadow(0 0 16px var(--phase));
}

.ring-track {
    fill: none;
    stroke: rgba(255,255,255,0.08);
    stroke-width: 12;
}

.ring-progress {
    fill: none;
    stroke: var(--phase);
    stroke-width: 12;
    stroke-linecap: round;
    stroke-dasharray: 653.45;
    stroke-dashoffset: 0;
    transition: stroke 0.45s ease;
}

.ring-center {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#time-left {
    font-size: clamp(52px, 14vw, 72px);
    font-weight: 800;
    letter-spacing: -0.04em;
    font-variant-numeric: tabular-nums;
    line-height: 1;
    transition: transform 0.28s cubic-bezier(.22,1,.36,1);
}

#time-left.pop { transform: scale(1.045); }

#current-phase {
    margin-top: 8px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--phase);
}

.round-chip {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 999px;
    background: rgba(255,255,255,0.06);
    color: var(--muted);
    font-weight: 700;
    margin-bottom: 16px;
}

.overall {
    height: 8px;
    border-radius: 999px;
    background: rgba(255,255,255,0.08);
    overflow: hidden;
    margin: 0 8px 8px;
}

.overall-bar {
    height: 100%;
    width: 100%;
    background: var(--phase);
    border-radius: inherit;
    transform: scaleX(0);
    transform-origin: left center;
    will-change: transform;
}

.overall-label {
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 18px;
}

.timer-shell.urgent #time-left {
    animation: pulse 1s cubic-bezier(.22,1,.36,1) infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.06); opacity: 0.86; }
}

.toasts {
    position: fixed;
    left: 50%;
    bottom: calc(18px + var(--safe-bottom));
    transform: translateX(-50%);
    z-index: 20;
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: min(420px, calc(100% - 24px));
}

.toast {
    background: rgba(16, 30, 40, 0.94);
    border: 1px solid var(--card-border);
    color: var(--text);
    padding: 12px 14px;
    border-radius: 14px;
    box-shadow: var(--shadow);
    animation: rise 0.35s cubic-bezier(.22,1,.36,1);
}

@media (min-width: 768px) {
    .logo { height: 92px; }
    .card { padding: 26px; }
    .app { padding-top: calc(28px + var(--safe-top)); }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation: none !important;
        transition: none !important;
    }
}