/* ===== 清醒挑战闹钟 - 样式表 ===== */

/* --- CSS Variables --- */
:root {
    /* Colors - 基于UX设计文档 */
    --color-morning: #FFB347;
    --color-warning: #FF6B6B;
    --color-success: #4ECDC4;
    --color-bg-dark: #1A1A2E;
    --color-bg-card: #2D2D44;
    --color-text: #FFFFFF;
    --color-text-muted: #A0A0A0;
    --color-accent: #FFE66D;

    /* Gradients */
    --gradient-morning: linear-gradient(135deg, #1A1A2E 0%, #2D2D44 50%, #3D3D5C 100%);
    --gradient-alarm: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
    --gradient-success: linear-gradient(135deg, #4ECDC4 0%, #44A08D 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-button: 0 4px 16px rgba(0, 0, 0, 0.2);
}

/* --- Reset & Base --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gradient-morning);
    color: var(--color-text);
    min-height: 100vh;
    line-height: 1.6;
}

#app {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    position: relative;
}

/* --- Screen Management --- */
.screen {
    display: none;
    padding: var(--spacing-md);
    min-height: 100vh;
    animation: fadeIn 0.3s ease;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Header --- */
.header {
    text-align: center;
    padding: var(--spacing-lg) 0;
    position: relative;
}

.brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.subtitle {
    font-size: 1rem;
    color: var(--color-text-muted);
}

.btn-back {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-xs);
}

/* --- Current Time Display --- */
.current-time-display {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
}

.current-time-display .time {
    font-family: 'JetBrains Mono', monospace;
    font-size: 4rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: 2px;
}

.current-time-display .date {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

/* --- Divider --- */
.divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: var(--spacing-md) 0;
}

/* --- Alarms Section --- */
.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.alarms-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.alarm-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.alarm-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}

.alarm-card .alarm-time {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.8rem;
    font-weight: 700;
}

.alarm-card .alarm-info {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.alarm-card .alarm-toggle {
    width: 50px;
    height: 28px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 14px;
    position: relative;
    cursor: pointer;
    transition: background 0.3s;
}

.alarm-card .alarm-toggle.active {
    background: var(--color-success);
}

.alarm-card .alarm-toggle::after {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    background: white;
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: transform 0.3s;
}

.alarm-card .alarm-toggle.active::after {
    transform: translateX(22px);
}

.no-alarms {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-muted);
}

.no-alarms .hint {
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
}

/* --- Buttons --- */
.btn-primary {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-alarm);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: var(--shadow-button);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
}

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

.btn-secondary {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: 2px solid var(--color-text);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-danger {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-warning);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

.btn-snooze {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-size: 1rem;
    cursor: pointer;
    margin-top: var(--spacing-md);
    transition: all 0.2s;
}

.btn-snooze:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--color-text);
}

.btn-add-alarm {
    margin-top: var(--spacing-lg);
}

/* --- Footer --- */
.footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-top: auto;
}

.back-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--color-accent);
    text-decoration: none;
}

.back-link:hover {
    text-decoration: underline;
}

/* --- Setup Form --- */
.setup-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.time-picker {
    text-align: center;
}

.time-picker label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
}

.time-inputs {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.time-select {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-card);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text);
    text-align: center;
    cursor: pointer;
}

.time-select:focus {
    outline: none;
    border-color: var(--color-accent);
}

.time-separator {
    font-size: 2.5rem;
    font-weight: 700;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

/* --- Mode Options --- */
.mode-options {
    display: flex;
    gap: var(--spacing-sm);
}

.mode-option {
    flex: 1;
    cursor: pointer;
}

.mode-option input {
    display: none;
}

.mode-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--color-bg-card);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    text-align: center;
    transition: all 0.2s;
}

.mode-option input:checked+.mode-card {
    border-color: var(--color-accent);
    background: rgba(255, 230, 109, 0.1);
}

.mode-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.mode-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.mode-desc {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* --- Challenge Options --- */
.challenge-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.challenge-option {
    flex: 1;
    min-width: calc(50% - var(--spacing-sm));
    cursor: pointer;
}

.challenge-option input {
    display: none;
}

.challenge-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-card);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: all 0.2s;
}

.challenge-option input:checked+.challenge-card {
    border-color: var(--color-success);
    background: rgba(78, 205, 196, 0.1);
}

.challenge-icon {
    font-size: 1.5rem;
}

/* --- Alarm Screen --- */
#alarm-screen {
    background: var(--gradient-alarm);
    display: flex;
    flex-direction: column;
    animation: shake 0.5s ease-in-out infinite;
}

#alarm-screen.active {
    display: flex;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

.alarm-header {
    text-align: center;
    padding: var(--spacing-lg) 0;
}

.alarm-icon {
    font-size: 4rem;
    animation: ring 0.3s ease-in-out infinite alternate;
}

@keyframes ring {
    from {
        transform: rotate(-15deg);
    }

    to {
        transform: rotate(15deg);
    }
}

.alarm-header h1 {
    font-size: 1.5rem;
    margin: var(--spacing-sm) 0;
}

.alarm-display-time {
    font-family: 'JetBrains Mono', monospace;
    font-size: 3rem;
    font-weight: 700;
}

/* --- Challenge Container --- */
.challenge-container {
    flex: 1;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-md) 0;
}

.challenge-title {
    text-align: center;
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
}

.challenge-content {
    text-align: center;
}

/* Math Challenge */
.math-problem {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    margin: var(--spacing-lg) 0;
}

.math-input {
    width: 100%;
    max-width: 200px;
    padding: var(--spacing-md);
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: var(--radius-md);
    color: #1A1A2E;
    margin: 0 auto var(--spacing-md);
    display: block;
}

.math-input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

/* Typing Challenge */
.typing-target {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.typing-input {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1.1rem;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: var(--radius-md);
    color: #1A1A2E;
    margin-bottom: var(--spacing-sm);
}

.typing-input:focus {
    outline: none;
}

.accuracy-display {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.accuracy-display.success {
    color: var(--color-accent);
}

/* Shake Challenge */
.shake-visual {
    font-size: 5rem;
    margin: var(--spacing-lg) 0;
    animation: wobble 0.5s ease infinite;
}

@keyframes wobble {

    0%,
    100% {
        transform: rotate(-10deg);
    }

    50% {
        transform: rotate(10deg);
    }
}

.shake-progress {
    width: 100%;
    height: 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    overflow: hidden;
    margin: var(--spacing-md) 0;
}

.shake-progress-bar {
    height: 100%;
    background: var(--color-accent);
    border-radius: 10px;
    transition: width 0.1s;
}

.shake-count {
    font-size: 1.5rem;
    font-weight: 600;
}

.btn-submit {
    width: 100%;
    padding: var(--spacing-md);
    background: white;
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-warning);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: var(--spacing-md);
}

.btn-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* --- Alarm Footer --- */
.alarm-footer {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

.level-badge {
    background: var(--color-accent);
    color: #1A1A2E;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.8rem;
}

/* --- Success Screen --- */
#success-screen {
    background: var(--gradient-success);
    display: flex;
    align-items: center;
    justify-content: center;
}

#success-screen.active {
    display: flex;
}

.success-content {
    text-align: center;
    width: 100%;
}

.success-icon {
    font-size: 5rem;
    animation: bounce 0.5s ease infinite alternate;
}

@keyframes bounce {
    from {
        transform: scale(1);
    }

    to {
        transform: scale(1.1);
    }
}

.success-content h1 {
    font-size: 1.5rem;
    margin: var(--spacing-md) 0;
}

.success-stats {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
}

.stat-value {
    font-weight: 600;
}

.daily-quote {
    font-style: italic;
    padding: var(--spacing-md);
    color: rgba(255, 255, 255, 0.9);
}

.brand-tag {
    margin-top: var(--spacing-lg);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* --- Modal --- */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    max-width: 320px;
    width: 100%;
}

.modal-content h2 {
    margin-bottom: var(--spacing-sm);
}

.warning-text {
    color: var(--color-warning);
    margin: var(--spacing-sm) 0 var(--spacing-md);
}

.modal-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.modal-buttons button {
    flex: 1;
}

/* --- Error State --- */
.error-shake {
    animation: errorShake 0.5s ease;
}

@keyframes errorShake {

    0%,
    100% {
        transform: translateX(0);
    }

    20%,
    60% {
        transform: translateX(-10px);
    }

    40%,
    80% {
        transform: translateX(10px);
    }
}

/* --- Responsive --- */
@media (max-width: 380px) {
    .current-time-display .time {
        font-size: 3rem;
    }

    .time-select {
        font-size: 2rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .time-separator {
        font-size: 2rem;
    }
}