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

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: rgba(30, 41, 59, 0.95);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --border-color: #475569;
    --accent-color: #22c55e;
    --accent-hover: #16a34a;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --ring-bg: rgba(51, 65, 85, 0.3);
    --input-bg: #1e293b;
    --gradient-start: #0f172a;
    --gradient-end: #1e1b2e;
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: rgba(255, 255, 255, 0.98);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --border-color: #e2e8f0;
    --accent-color: #10b981;
    --accent-hover: #059669;
    --ring-bg: rgba(203, 213, 225, 0.3);
    --input-bg: #ffffff;
    --gradient-start: #f8fafc;
    --gradient-end: #e2e8f0;
}

[data-theme="blue"] {
    --bg-primary: #0c4a6e;
    --bg-secondary: #075985;
    --bg-card: rgba(2, 6, 23, 0.85);
    --text-primary: #e0f2fe;
    --text-secondary: #bae6fd;
    --border-color: #38bdf8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --ring-bg: rgba(59, 130, 246, 0.3);
    --input-bg: #0c4a6e;
    --gradient-start: #082f49;
    --gradient-end: #0c4a6e;
}

[data-theme="purple"] {
    --bg-primary: #4c1d95;
    --bg-secondary: #5b21b6;
    --bg-card: rgba(46, 16, 101, 0.9);
    --text-primary: #ede9fe;
    --text-secondary: #c4b5fd;
    --border-color: #a78bfa;
    --accent-color: #8b5cf6;
    --accent-hover: #7c3aed;
    --ring-bg: rgba(139, 92, 246, 0.3);
    --input-bg: #4c1d95;
    --gradient-start: #2e1065;
    --gradient-end: #4c1d95;
}

[data-theme="orange"] {
    --bg-primary: #431407;
    --bg-secondary: #7c2d12;
    --bg-card: rgba(194, 65, 12, 0.15);
    --text-primary: #ffedd5;
    --text-secondary: #fed7aa;
    --border-color: #ea580c;
    --accent-color: #f97316;
    --accent-hover: #ea580c;
    --ring-bg: rgba(249, 115, 22, 0.3);
    --input-bg: #7c2d12;
    --gradient-start: #431407;
    --gradient-end: #7c2d12;
}

[data-theme="teal"] {
    --bg-primary: #042f2e;
    --bg-secondary: #115e59;
    --bg-card: rgba(20, 184, 166, 0.1);
    --text-primary: #ccfbf1;
    --text-secondary: #99f6e4;
    --border-color: #14b8a6;
    --accent-color: #2dd4bf;
    --accent-hover: #14b8a6;
    --ring-bg: rgba(45, 212, 191, 0.3);
    --input-bg: #115e59;
    --gradient-start: #042f2e;
    --gradient-end: #115e59;
}

body {
    min-height: 100vh;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
}

button,
input,
select {
    font: inherit;
}

button {
    -webkit-tap-highlight-color: transparent;
}

.top-bar {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 20;
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.select-label,
.language-links {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    color: var(--text-primary);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    font-size: 13px;
}

.top-select {
    max-width: 100px;
    color: var(--text-primary);
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 5px 8px;
}

.language-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 700;
    font-size: 12px;
}

.language-links a:hover {
    color: var(--accent-color);
}

.container {
    width: min(550px, 100%);
    margin: 90px auto 0;
}

.card,
.faq-card {
    border: 1px solid var(--border-color);
    border-radius: 32px;
    background: var(--bg-card);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(10px);
}

.card {
    padding: 32px 24px;
    text-align: center;
}

.page-title {
    font-size: 28px;
    line-height: 1.1;
    margin-bottom: 8px;
}

.page-subtitle {
    color: var(--text-secondary);
    margin-bottom: 22px;
}

.ring-button {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto 24px;
    padding: 0;
    cursor: pointer;
    background: none;
    border: none;
    transition: transform 0.1s ease;
}

.ring-button:active {
    transform: scale(0.97);
}

.ring-bg,
.ring-progress {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

.ring-bg {
    background: var(--ring-bg);
    border: 8px solid var(--border-color);
}

.ring-progress {
    transform: rotate(-90deg);
}

.ring-progress circle {
    fill: none;
    stroke: var(--accent-color);
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dashoffset 0.05s linear;
}

.ring-inner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    text-align: center;
}

.ring-icon {
    font-size: 48px;
    margin-bottom: 8px;
}

.ring-timer {
    color: var(--text-primary);
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    font-size: 32px;
    font-weight: 800;
    letter-spacing: 2px;
}

.ring-label {
    margin-top: 4px;
    color: var(--text-secondary);
    font-size: 12px;
}

.time-buttons,
.custom-row,
.action-buttons,
.schedule-inputs {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.time-buttons,
.custom-row,
.options {
    margin-bottom: 24px;
}

.time-btn,
.custom-apply,
.btn-start,
.btn-stop,
.coffee-donate-btn,
.danger-button {
    border: none;
    border-radius: 999px;
    color: #ffffff;
    font-weight: 800;
    cursor: pointer;
    transition: transform 0.2s ease, opacity 0.2s ease, box-shadow 0.2s ease;
}

.time-btn {
    padding: 10px 18px;
    color: var(--accent-color);
    background: transparent;
    border: 2px solid var(--accent-color);
}

.time-btn.active,
.custom-apply,
.btn-start,
.coffee-donate-btn {
    color: #ffffff;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
}

.time-btn:hover:not(:disabled),
.custom-apply:hover:not(:disabled),
.btn-start:hover:not(:disabled),
.btn-stop:hover:not(:disabled),
.coffee-donate-btn:hover:not(:disabled),
.danger-button:hover:not(:disabled) {
    transform: translateY(-2px);
}

button:disabled,
input:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.custom-input,
.schedule-inputs input {
    color: var(--text-primary);
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 10px 14px;
}

.custom-input {
    width: 115px;
    text-align: center;
}

.custom-apply {
    padding: 10px 18px;
}

.options {
    padding: 16px;
    background: rgba(0, 0, 0, 0.18);
    border-radius: 20px;
}

.option-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    color: var(--text-primary);
    font-size: 14px;
}

.option-row + .option-row {
    margin-top: 14px;
}

.option-label {
    text-align: left;
}

.option-label small {
    color: var(--text-secondary);
}

.schedule-row {
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
}

.toggle {
    position: relative;
    width: 52px;
    height: 28px;
    flex: 0 0 auto;
}

.toggle input {
    position: absolute;
    opacity: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    border-radius: 999px;
    cursor: pointer;
    background: #475569;
    transition: 0.2s ease;
}

.toggle-slider::before {
    content: "";
    position: absolute;
    left: 3px;
    bottom: 3px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #ffffff;
    transition: 0.2s ease;
}

.toggle input:checked + .toggle-slider {
    background: var(--accent-color);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(24px);
}

.schedule-inputs {
    align-items: center;
    margin-top: 14px;
}

.schedule-inputs label {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 13px;
}

.schedule-info {
    margin-top: 12px;
    padding: 10px;
    border-radius: 14px;
    color: var(--accent-color);
    background: rgba(34, 197, 94, 0.1);
    font-size: 12px;
}

.btn-start,
.btn-stop {
    flex: 1;
    min-width: 130px;
    padding: 14px;
    font-size: 16px;
}

.btn-stop,
.danger-button {
    background: linear-gradient(135deg, var(--danger-color), var(--danger-hover));
}

.status {
    margin-top: 20px;
    padding: 12px 14px;
    border-left: 3px solid var(--accent-color);
    border-radius: 16px;
    text-align: left;
    background: rgba(34, 197, 94, 0.1);
}

.status-text {
    color: var(--accent-color);
    font-size: 13px;
    font-weight: 700;
}

.status-detail {
    margin-top: 4px;
    color: var(--text-secondary);
    font-size: 12px;
}

.faq-card {
    margin-top: 30px;
    padding: 24px;
}

.faq-title {
    text-align: center;
    font-size: 20px;
    margin-bottom: 16px;
}

details {
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px;
    margin-bottom: 12px;
    transition: background 0.2s ease, border-color 0.2s ease;
}

details:hover {
    background: rgba(34, 197, 94, 0.05);
}

summary {
    cursor: pointer;
    font-weight: 800;
    color: var(--text-primary);
}

details p,
.faq-content {
    margin-top: 12px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
}


.settings-grid {
    display: grid;
    gap: 12px;
    margin-top: 12px;
}

.color-picker-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    color: var(--text-secondary);
    font-size: 14px;
}

.color-picker-row input[type="color"] {
    width: 46px;
    height: 36px;
    padding: 2px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--input-bg);
    cursor: pointer;
}

.popup-position-content {
    display: block;
}

.popup-position-select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    color: var(--text-primary);
    background: var(--input-bg);
    cursor: pointer;
    margin-top: 8px;
}

.settings-save-btn,
.reset-btn {
    width: 100%;
    padding: 10px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 800;
}

.reset-btn {
    color: var(--accent-color);
    background: transparent;
    border: 1px solid var(--accent-color);
}

.reset-btn:hover {
    background: rgba(34, 197, 94, 0.08);
}

.footer {
    margin: 20px 0 30px;
    color: var(--text-secondary);
    text-align: center;
    font-size: 12px;
}

.floating-coffee {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 30;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border: none;
    border-radius: 50%;
    color: #ffffff;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
    font-size: 28px;
    cursor: pointer;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 40;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(5px);
}

.modal-overlay[hidden],
[hidden] {
    display: none !important;
}

.modal-card {
    position: relative;
    width: min(400px, 100%);
    padding: 28px 24px;
    border: 1px solid var(--border-color);
    border-radius: 32px;
    text-align: center;
    background: var(--bg-card);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 18px;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: 30px;
    line-height: 1;
    cursor: pointer;
}

.modal-icon {
    font-size: 58px;
}

.modal-title {
    margin: 8px 0;
}

.modal-description,
.modal-footer {
    color: var(--text-secondary);
}

.modal-description {
    line-height: 1.5;
    margin-bottom: 20px;
}

.coffee-donate-btn {
    width: 100%;
    padding: 14px;
}

.modal-footer {
    margin-top: 14px;
    font-size: 11px;
}

.popup-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.popup-card {
    width: min(360px, 100%);
    padding: 26px 20px;
    border: 1px solid var(--border-color);
    border-radius: 28px;
    text-align: center;
    background: var(--bg-card);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.popup-icon {
    font-size: 58px;
    margin-bottom: 10px;
}

.popup-badge {
    display: inline-block;
    margin-bottom: 12px;
    padding: 4px 12px;
    border-radius: 999px;
    color: var(--accent-color);
    background: rgba(34, 197, 94, 0.15);
    font-size: 10px;
    font-weight: 800;
}

.popup-status {
    color: var(--accent-color);
    font-size: 18px;
    font-weight: 800;
}

.popup-timer {
    margin: 8px 0 10px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 36px;
    font-weight: 900;
    letter-spacing: 2px;
}

.popup-info {
    margin-bottom: 16px;
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.5;
}

.danger-button {
    padding: 10px 20px;
}

@keyframes activePulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.active-pulse .ring-icon {
    animation: activePulse 1.5s infinite;
}

@media (max-width: 640px) {
    body {
        padding: 14px;
    }

    .top-bar {
        position: static;
        justify-content: center;
        margin-bottom: 18px;
    }

    .container {
        margin-top: 0;
    }

    .card {
        padding: 24px 16px;
    }

    .option-row {
        align-items: flex-start;
    }
}