:root {
    --bg: #eef4f8;
    --panel: #ffffff;
    --ink: #122033;
    --muted: #6a7687;
    --line: #dce5ee;
    --primary: #0f766e;
    --primary-dark: #0b4f4a;
    --accent: #f59e0b;
    --danger: #dc2626;
    --shadow: 0 22px 60px rgba(19, 35, 52, 0.14);
    --radius: 8px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(15, 118, 110, 0.17), transparent 34rem),
        linear-gradient(135deg, #f7fbfd 0%, var(--bg) 100%);
}

button,
input,
select {
    font: inherit;
}

.app-shell {
    display: grid;
    grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
    gap: 22px;
    width: min(1480px, calc(100% - 32px));
    min-height: calc(100vh - 32px);
    margin: 16px auto;
}

.control-panel,
.timer-board {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(220, 229, 238, 0.9);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.control-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 22px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 58px;
    height: 58px;
    border-radius: var(--radius);
    color: #ffffff;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), #14b8a6);
    letter-spacing: 0.04em;
}

.eyebrow {
    margin: 0 0 4px;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

h1,
h2 {
    margin: 0;
    line-height: 1.05;
}

h1 {
    font-size: clamp(1.45rem, 2vw, 2.15rem);
}

h2 {
    font-size: clamp(1.7rem, 2.8vw, 3rem);
}

.settings-form {
    display: grid;
    gap: 14px;
}

.settings-form label {
    display: grid;
    gap: 7px;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 700;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

input,
select {
    width: 100%;
    min-height: 44px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 10px 12px;
    color: var(--ink);
    background: #ffffff;
    outline: none;
}

input:focus,
select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.12);
}

button {
    min-height: 44px;
    border: 0;
    border-radius: var(--radius);
    padding: 10px 14px;
    color: var(--ink);
    background: #e8eef4;
    cursor: pointer;
    font-weight: 800;
    transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(18, 32, 51, 0.12);
}

button:active {
    transform: translateY(0);
}

.login-page {
    display: grid;
    place-items: center;
    padding: 18px;
}

.login-shell {
    display: grid;
    place-items: center;
    width: min(100%, 460px);
    min-height: calc(100vh - 36px);
}

.login-card {
    display: grid;
    gap: 20px;
    width: 100%;
    border: 1px solid rgba(220, 229, 238, 0.9);
    border-radius: var(--radius);
    padding: clamp(20px, 5vw, 34px);
    background: rgba(255, 255, 255, 0.94);
    box-shadow: var(--shadow);
}

.login-copy {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

.login-alert {
    border-radius: var(--radius);
    padding: 12px 14px;
    color: #991b1b;
    background: rgba(220, 38, 38, 0.1);
    font-weight: 800;
}

.login-form {
    display: grid;
    gap: 14px;
}

.login-form label {
    display: grid;
    gap: 7px;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 800;
}

.logout-form {
    margin: -4px 0 0;
}

.logout-form button {
    width: 100%;
    min-height: 40px;
    color: var(--danger);
    background: rgba(220, 38, 38, 0.09);
}

.primary-btn {
    color: #ffffff;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.secondary-btn {
    color: #ffffff;
    background: var(--ink);
}

.sound-box {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px;
    background: #f8fbfd;
}

.panel-title {
    margin: 0 0 8px;
    font-weight: 900;
}

blockquote {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

.helper-text {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 0.86rem;
    line-height: 1.5;
}

.sound-uploader {
    display: grid;
    gap: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px;
    background: #f8fbfd;
}

.message-list {
    display: grid;
    gap: 6px;
    border-radius: var(--radius);
    padding: 10px 12px;
    color: var(--primary-dark);
    background: rgba(15, 118, 110, 0.1);
    font-size: 0.86rem;
    font-weight: 800;
}

.message-list p {
    margin: 0;
}

.sound-upload-grid {
    display: grid;
    gap: 10px;
}

.sound-upload-item {
    display: grid;
    gap: 8px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 12px;
    background: #ffffff;
}

.sound-upload-item input[type="file"] {
    padding: 8px;
    font-size: 0.86rem;
}

.sound-upload-item audio {
    width: 100%;
    height: 36px;
}

.delete-sound {
    display: flex !important;
    grid-template-columns: unset !important;
    align-items: center;
    gap: 8px !important;
    color: var(--danger) !important;
    font-size: 0.84rem !important;
}

.delete-sound input {
    width: 16px;
    min-height: 16px;
}

.empty-sound {
    color: var(--muted);
    font-size: 0.84rem;
    font-weight: 700;
}

.station-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    overflow: auto;
}

.station-list span {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 8px 11px;
    color: var(--muted);
    background: #ffffff;
    font-size: 0.85rem;
    font-weight: 800;
}

.station-list span.is-current {
    border-color: transparent;
    color: #ffffff;
    background: var(--primary);
}

.station-list span.is-done {
    color: var(--primary-dark);
    background: rgba(15, 118, 110, 0.1);
}

.timer-board {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 20px;
    padding: clamp(18px, 2.5vw, 36px);
}

.top-bar {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
}

.status-chip {
    border-radius: 999px;
    padding: 9px 13px;
    color: var(--primary-dark);
    background: rgba(15, 118, 110, 0.12);
    font-weight: 900;
    white-space: nowrap;
}

.status-chip.is-muted {
    color: var(--danger);
    background: rgba(220, 38, 38, 0.1);
}

.timer-card {
    display: grid;
    grid-template-columns: minmax(280px, 520px) minmax(250px, 1fr);
    align-items: center;
    gap: clamp(18px, 4vw, 52px);
}

.progress-ring {
    position: relative;
    width: min(100%, 520px);
    aspect-ratio: 1;
    margin: auto;
}

.progress-ring svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.track,
.progress {
    fill: none;
    stroke-width: 14;
}

.track {
    stroke: #dfebf2;
}

.progress {
    stroke: var(--primary);
    stroke-linecap: round;
    stroke-dasharray: 603.19;
    stroke-dashoffset: 603.19;
    transition: stroke-dashoffset 0.35s linear, stroke 0.2s ease;
}

.progress.is-warning {
    stroke: var(--accent);
}

.progress.is-danger {
    stroke: var(--danger);
}

.time-wrap {
    position: absolute;
    inset: 14%;
    display: grid;
    place-items: center;
    align-content: center;
    text-align: center;
}

.time-wrap p {
    margin: 0 0 10px;
    color: var(--primary-dark);
    font-size: clamp(1.05rem, 1.7vw, 1.35rem);
    font-weight: 900;
}

.time-wrap strong {
    font-size: clamp(4rem, 12vw, 9.5rem);
    line-height: 0.9;
    letter-spacing: 0;
}

.time-wrap span {
    max-width: 310px;
    margin-top: 14px;
    color: var(--muted);
    font-size: clamp(0.92rem, 1.4vw, 1.15rem);
    font-weight: 800;
}

.meta-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.meta-grid article {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 18px;
    background: #ffffff;
}

.meta-grid span {
    display: block;
    margin-bottom: 8px;
    color: var(--muted);
    font-weight: 800;
}

.meta-grid strong {
    display: block;
    font-size: clamp(1.35rem, 2.4vw, 2.3rem);
}

.controls {
    display: grid;
    grid-template-columns: 1.35fr repeat(5, 1fr);
    gap: 10px;
}

.timeline {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.timeline-item {
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 12px;
    background: #ffffff;
}

.timeline-item span {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    color: var(--muted);
    background: #e8eef4;
    font-weight: 900;
}

.timeline-item p {
    margin: 0;
    font-weight: 900;
}

.timeline-item.active {
    border-color: rgba(15, 118, 110, 0.35);
    background: rgba(15, 118, 110, 0.08);
}

.timeline-item.active span {
    color: #ffffff;
    background: var(--primary);
}

body.phase-practice .progress {
    stroke: #2563eb;
}

body.phase-transition .progress {
    stroke: var(--accent);
}

body.phase-finished .progress {
    stroke: var(--primary);
}

@media (max-width: 980px) {
    .app-shell,
    .timer-card {
        grid-template-columns: 1fr;
    }

    .control-panel {
        order: 2;
    }

    .timer-board {
        order: 1;
    }

    .controls {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .app-shell {
        width: min(100% - 20px, 1480px);
        margin: 10px auto;
    }

    .form-grid,
    .meta-grid,
    .timeline,
    .controls {
        grid-template-columns: 1fr;
    }

    .top-bar {
        flex-direction: column;
    }
}