@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&display=swap');
:root {
    --green: #00ff41;
    --green-dim: #00aa2a;
    --green-faint: #003a0e;
    --amber: #ffb000;
    --red: #ff4444;
    --bg: #080808;
    --bg-surface: #0e0e0e;
    --bg-raised: #141414;
    --bg-highlight: #1a1a1a;
    --border: #1e1e1e;
    --border-bright: #2e2e2e;
    --text: #00ff41;
    --text-dim: #00aa2a;
    --font: 'JetBrains Mono', 'Courier New', monospace;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 16px;
    background-image: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 255, 65, 0.015) 2px,
        rgba(0, 255, 65, 0.015) 4px
    );
}

#bootSequence {
    width: 100%;
    max-width: 480px;
    margin-top: 60px;
    padding: 24px;
    font-size: 0.85rem;
    line-height: 2;
}

.boot-line {
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    color: var(--green-dim);
}

.boot-line.visible {
    opacity: 1;
    transform: translateY(0);
}

.boot-line .ok { color: var(--green); font-weight: 700; }
.boot-line .warn { color: var(--amber); }
.boot-line .title { color: var(--green); font-size: 1.1rem; font-weight: 800; letter-spacing: 0.1em; }

#mainContent {
    display: none;
    width: 100%;
    max-width: 480px;
}

#mainContent.fade-in {
    animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.header {
    border: 1px solid var(--border-bright);
    background: var(--bg-surface);
    padding: 16px 20px 12px;
    margin-bottom: 8px;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--green), transparent);
    animation: scanH 3s linear infinite;
}

@keyframes scanH {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.app-title {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--green);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.app-version {
    font-size: 0.7rem;
    color: var(--text-dim);
    border: 1px solid var(--text-dim);
    padding: 2px 6px;
}

.app-subtitle {
    font-size: 0.72rem;
    color: var(--text-dim);
    letter-spacing: 0.04em;
}

.status-bar {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-top: none;
    padding: 5px 12px;
    font-size: 0.7rem;
    color: var(--green-dim);
    margin-bottom: 8px;
    min-height: 24px;
}

#statusLine { 
    color: var(--green-dim); 
}

.top-controls {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.toggle-btn {
    font-family: var(--font);
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--bg-surface);
    color: var(--text-dim);
    border: 1px solid var(--border-bright);
    padding: 5px 10px;
    cursor: pointer;
    transition: all 0.15s;
    letter-spacing: 0.04em;
    flex: 1;
    min-width: 90px;
    text-align: center;
}

.toggle-btn:hover {
    border-color: var(--green-dim);
    color: var(--green-dim);
}

.toggle-btn.toggle-on {
    border-color: var(--green);
    color: var(--green);
    background: var(--green-faint);
    box-shadow: 0 0 8px rgba(0, 255, 65, 0.15);
}

.toggle-btn.reset-btn {
    color: var(--amber);
    border-color: #3a2a00;
}

.toggle-btn.reset-btn:hover {
    border-color: var(--amber);
    background: #1a1000;
}

.notif-row {
    display: flex;
    gap: 6px;
    margin-bottom: 8px;
    align-items: center;
}

.notif-label {
    font-size: 0.68rem;
    color: var(--text-dim);
    white-space: nowrap;
}

.notif-select {
    font-family: var(--font);
    font-size: 0.7rem;
    background: var(--bg-surface);
    color: var(--text-dim);
    border: 1px solid var(--border-bright);
    padding: 4px 8px;
    cursor: pointer;
    flex: 1;
}

.notif-select option { 
    background: var(--bg-surface); 
}

.timer-display {
    background: var(--bg-surface);
    border: 1px solid var(--border-bright);
    padding: 24px 20px 20px;
    text-align: center;
    margin-bottom: 8px;
    position: relative;
    overflow: hidden;
    transition: border-color 0.3s;
}

.timer-display.active-phase {
    border-color: var(--green);
    box-shadow: 0 0 20px rgba(0, 255, 65, 0.08), inset 0 0 40px rgba(0, 255, 65, 0.03);
}

.timer-display.rest-phase {
    border-color: var(--amber);
    box-shadow: 0 0 20px rgba(255, 176, 0, 0.08), inset 0 0 40px rgba(255, 176, 0, 0.03);
}

.timer-display.rest-phase .timer-text { color: var(--amber); }
.timer-display.rest-phase .timer-label { color: var(--amber); opacity: 0.6; }

.timer-display.complete-phase {
    border-color: var(--green);
    background: var(--green-faint);
}

.timer-text {
    font-size: 4rem;
    font-weight: 800;
    color: var(--green);
    letter-spacing: 0.08em;
    text-shadow: 0 0 20px rgba(0, 255, 65, 0.5), 0 0 40px rgba(0, 255, 65, 0.2);
    line-height: 1;
    margin-bottom: 8px;
    animation: flicker 8s ease-in-out infinite;
}

@keyframes flicker {
    0%, 95%, 100% { opacity: 1; }
    96% { opacity: 0.92; }
    97% { opacity: 1; }
    98% { opacity: 0.88; }
}

.timer-text::after {
    content: '▌';
    animation: blink 1s step-end infinite;
    font-size: 0.6em;
    opacity: 0.7;
}

@keyframes blink {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 0; }
}

.timer-label {
    font-size: 0.72rem;
    color: var(--text-dim);
    letter-spacing: 0.06em;
}

.progress-container {
    background: var(--bg-surface);
    border: 1px solid var(--border-bright);
    padding: 10px 14px;
    margin-bottom: 8px;
    font-size: 0.75rem;
    color: var(--green);
    letter-spacing: 0.03em;
    text-align: center;
}

#progressText {
    font-family: var(--font);
    word-break: break-all;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    margin-bottom: 8px;
}

.stat-cell {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    padding: 8px 6px;
    text-align: center;
}

.stat-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--green);
    display: block;
    text-shadow: 0 0 10px rgba(0, 255, 65, 0.4);
}

.stat-label {
    font-size: 0.58rem;
    color: var(--text-dim);
    display: block;
    margin-top: 2px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.exercise-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-bright);
    padding: 14px 16px;
    margin-bottom: 8px;
}

.section-badge {
    font-size: 0.68rem;
    color: var(--green-dim);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 10px;
    display: block;
}

.exercise-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 10px;
}

.exercise-emoji {
    font-size: 1.8rem;
    line-height: 1;
    flex-shrink: 0;
    margin-top: 2px;
}

.exercise-title-block { flex: 1; }

.exercise-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--green);
    line-height: 1.2;
    letter-spacing: 0.02em;
}

.exercise-subtitle {
    font-size: 0.72rem;
    color: var(--text-dim);
    margin-top: 3px;
    font-style: italic;
}

.exercise-divider {
    border: none;
    border-top: 1px solid var(--border-bright);
    margin: 10px 0;
}

.exercise-description {
    font-size: 0.78rem;
    color: var(--text-dim);
    line-height: 1.7;
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 8px;
}

.main-btn {
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    background: var(--green-faint);
    color: var(--green);
    border: 1px solid var(--green);
    padding: 14px 20px;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-transform: uppercase;
    box-shadow: 0 0 16px rgba(0, 255, 65, 0.1);
}

.main-btn:hover {
    background: rgba(0, 255, 65, 0.15);
    box-shadow: 0 0 24px rgba(0, 255, 65, 0.25);
    transform: translateY(-1px);
}

.main-btn:active { 
    transform: translateY(0); 
}

.main-btn.pause-btn {
    background: rgba(255, 68, 68, 0.08);
    color: var(--red);
    border-color: var(--red);
    box-shadow: 0 0 16px rgba(255, 68, 68, 0.08);
    display: none;
}

.main-btn.pause-btn:hover {
    background: rgba(255, 68, 68, 0.15);
    box-shadow: 0 0 24px rgba(255, 68, 68, 0.2);
}

.btn-icon { 
    font-size: 0.9em; 
}

.nav-row {
    display: flex;
    gap: 6px;
}

.nav-btn {
    font-family: var(--font);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    background: var(--bg-surface);
    color: var(--text-dim);
    border: 1px solid var(--border-bright);
    padding: 9px 12px;
    cursor: pointer;
    transition: all 0.15s;
    flex: 1;
    text-transform: uppercase;
}

.nav-btn:hover:not(:disabled) {
    border-color: var(--green-dim);
    color: var(--green-dim);
}

.nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

#completionScreen {
    display: none;
    padding: 20px;
    text-align: center;
    background: var(--bg-surface);
    border: 1px solid var(--green);
    box-shadow: 0 0 40px rgba(0, 255, 65, 0.12);
    margin-bottom: 8px;
}

.completion-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--green);
    letter-spacing: 0.1em;
    margin-bottom: 8px;
    text-shadow: 0 0 20px rgba(0, 255, 65, 0.5);
}

.completion-sub {
    font-size: 0.8rem;
    color: var(--text-dim);
    line-height: 1.8;
}

.completion-time {
    font-size: 2rem;
    font-weight: 700;
    color: var(--green);
    margin: 12px 0;
    text-shadow: 0 0 16px rgba(0, 255, 65, 0.4);
}

.completion-reset {
    margin-top: 14px;
    font-family: var(--font);
    font-size: 0.78rem;
    font-weight: 600;
    background: var(--green-faint);
    color: var(--green);
    border: 1px solid var(--green);
    padding: 10px 20px;
    cursor: pointer;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: all 0.15s;
}

.completion-reset:hover {
    background: rgba(0, 255, 65, 0.15);
    box-shadow: 0 0 20px rgba(0, 255, 65, 0.2);
}

.footer {
    font-size: 0.62rem;
    color: var(--text-dim);
    text-align: center;
    padding: 8px 0 4px;
    letter-spacing: 0.04em;
    border-top: 1px solid var(--border);
    margin-top: 4px;
}

.install-btn {
    border-color: var(--amber) !important;
    color: var(--amber) !important;
    background: rgba(255, 176, 0, 0.06) !important;
}

.install-btn:hover {
    background: rgba(255, 176, 0, 0.12) !important;
    box-shadow: 0 0 16px rgba(255, 176, 0, 0.15) !important;
}

@media all and (display-mode: standalone) {
    body { padding-top: env(safe-area-inset-top); }
    .header { padding-top: calc(14px + env(safe-area-inset-top, 0px)); }
}

@media (max-width: 500px) and (display-mode: standalone) {
    #mainContent { max-width: 100%; }
    body { padding: 8px; }
}

@media (max-width: 360px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .timer-text { font-size: 3.2rem; }
    .app-title { font-size: 1.1rem; }
}