/* ===== DIN: Clear & Fast =====
 * 基于第一版优化：保持清晰，提升速度
 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
    background: linear-gradient(180deg, #1a1a2e 0%, #0f0f1a 100%);
    color: #fff;
    min-height: 100vh;
    padding: 20px;
    padding-bottom: max(20px, env(safe-area-inset-bottom));
}

.container {
    max-width: 600px;
    margin: 0 auto;
}

/* ===== HEADER ===== */
header {
    text-align: center;
    margin-bottom: 24px;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 4px;
}

.subtitle {
    color: #888;
    font-size: 0.85rem;
}

/* ===== STATS: 简化但清晰 ===== */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 24px;
}

.stat-card {
    background: rgba(255,255,255,0.05);
    border-radius: 16px;
    padding: 16px 8px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.08);
    transition: transform 0.2s;
}

.stat-card:active {
    transform: scale(0.98);
}

.stat-card.total {
    background: rgba(255,107,107,0.12);
    border-color: rgba(255,107,107,0.25);
}

.stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-card.total .stat-value {
    color: #ff6b6b;
}

.stat-label {
    font-size: 0.7rem;
    color: #888;
    margin-bottom: 2px;
}

.stat-growth {
    font-size: 0.65rem;
    color: #4ade80;
}

.stat-growth.negative {
    color: #f87171;
}

/* ===== MAIN BUTTON: 更大更容易点 ===== */
.main-action {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
    position: relative;
}

.din-button {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    border: none;
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.din-button:hover {
    transform: scale(1.05);
}

.din-button:active {
    transform: scale(0.95);
}

.din-button.recording {
    animation: pulse-btn 1.2s ease-in-out infinite;
}

@keyframes pulse-btn {
    0%, 100% { 
        filter: drop-shadow(0 0 20px rgba(255,107,107,0.4));
        transform: scale(1);
    }
    50% { 
        filter: drop-shadow(0 0 40px rgba(255,107,107,0.6));
        transform: scale(1.02);
    }
}

.btn-icon {
    width: 100%;
    height: 100%;
    transition: transform 0.2s;
}

.din-button:active .btn-icon {
    transform: scale(0.92);
}

/* 提示 */
.hint {
    position: absolute;
    bottom: -40px;
    text-align: center;
    color: #666;
    font-size: 0.8rem;
}

/* ===== FLOATING INPUT: 快速输入不跳转 ===== */
.float-input {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: rgba(30,30,40,0.98);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 24px;
    width: 90%;
    max-width: 400px;
    border: 1px solid rgba(255,255,255,0.1);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.float-input.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.float-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.float-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.float-time {
    font-size: 0.8rem;
    color: #666;
    font-family: 'SF Mono', monospace;
}

.float-field {
    width: 100%;
    background: rgba(0,0,0,0.3);
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 14px;
    padding: 16px;
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 16px;
    outline: none;
    transition: border-color 0.2s;
}

.float-field:focus {
    border-color: #ff6b6b;
}

.float-field::placeholder {
    color: #555;
}

/* Quick tags */
.tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.tag {
    padding: 10px 16px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 20px;
    font-size: 0.9rem;
    color: #aaa;
    cursor: pointer;
    transition: all 0.15s;
}

.tag:hover, .tag:active {
    background: #ff6b6b;
    border-color: #ff6b6b;
    color: #fff;
    transform: scale(0.98);
}

.float-actions {
    display: flex;
    gap: 12px;
}

.btn {
    flex: 1;
    padding: 14px;
    border-radius: 12px;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-primary {
    background: #ff6b6b;
    color: #fff;
}

.btn-primary:active {
    background: #ff5252;
    transform: scale(0.98);
}

.btn-secondary {
    background: rgba(255,255,255,0.08);
    color: #888;
}

.btn-secondary:active {
    background: rgba(255,255,255,0.12);
}

.btn-danger {
    background: rgba(255,59,48,0.15);
    color: #ff3b30;
}

.btn-danger:active {
    background: rgba(255,59,48,0.25);
    transform: scale(0.98);
}

/* Overlay */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(5px);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ===== RECENT STRIP: 横向快捷查看 ===== */
.recent-strip {
    background: rgba(255,255,255,0.03);
    border-radius: 16px;
    padding: 16px;
    margin-bottom: 16px;
}

.recent-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.recent-title {
    font-size: 0.85rem;
    color: #888;
}

.view-all {
    font-size: 0.8rem;
    color: #ff6b6b;
    cursor: pointer;
}

.recent-chips {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding-bottom: 4px;
}

.recent-chips::-webkit-scrollbar {
    display: none;
}

.recent-chip {
    flex-shrink: 0;
    padding: 10px 14px;
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
    font-size: 0.85rem;
    color: #aaa;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.recent-chip:hover, .recent-chip:active {
    background: rgba(255,255,255,0.1);
}

.recent-chip .time {
    font-size: 0.7rem;
    color: #666;
    font-family: 'SF Mono', monospace;
}

.recent-chip.empty {
    color: #555;
    font-style: italic;
}

/* ===== ACHIEVEMENTS: 横向滚动 ===== */
.achievements {
    background: rgba(255,255,255,0.03);
    border-radius: 16px;
    padding: 16px;
}

.achievements-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.achievements-title {
    font-size: 0.85rem;
    color: #888;
}

.achievements-progress {
    font-size: 0.8rem;
    color: #666;
}

.achievements-scroll {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.achievements-scroll::-webkit-scrollbar {
    display: none;
}

.achievement-badge {
    flex-shrink: 0;
    width: 70px;
    text-align: center;
    padding: 12px 8px;
    background: rgba(255,255,255,0.03);
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.05);
    opacity: 0.4;
    transition: all 0.2s;
}

.achievement-badge.unlocked {
    opacity: 1;
    background: rgba(255,215,0,0.08);
    border-color: rgba(255,215,0,0.2);
}

.achievement-icon {
    font-size: 1.8rem;
    display: block;
    margin-bottom: 4px;
}

.achievement-name {
    font-size: 0.65rem;
    color: #888;
}

/* ===== HISTORY PANEL ===== */
.history-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: 420px;
    background: linear-gradient(180deg, #1a1a2e 0%, #0f0f1a 100%);
    z-index: 200;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.history-panel.active {
    transform: translateX(0);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    padding-top: max(20px, env(safe-area-inset-top));
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.history-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.history-close {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.08);
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
}

.history-list {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: rgba(255,255,255,0.03);
    border-radius: 12px;
    margin-bottom: 8px;
}

.history-time {
    font-size: 0.75rem;
    color: #666;
    min-width: 50px;
    font-family: 'SF Mono', monospace;
}

.history-content {
    flex: 1;
    font-size: 0.9rem;
    color: #ddd;
}

.history-content.empty {
    color: #555;
    font-style: italic;
}

.history-actions {
    display: flex;
    gap: 6px;
}

.history-actions button {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: none;
    background: rgba(255,255,255,0.06);
    color: #888;
    font-size: 0.9rem;
    cursor: pointer;
}

.history-actions button:hover {
    background: rgba(255,255,255,0.1);
}

.history-actions .btn-delete:hover {
    background: #ff6b6b;
    color: #fff;
}

/* ===== TOAST ===== */
.toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    background: #ff6b6b;
    color: #fff;
    padding: 16px 32px;
    border-radius: 30px;
    font-weight: 600;
    z-index: 300;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 400px) {
    .stats {
        gap: 6px;
    }
    
    .stat-card {
        padding: 12px 4px;
    }
    
    .stat-value {
        font-size: 1.3rem;
    }
    
    .din-button {
        width: 170px;
        height: 170px;
    }
    
    .btn-text {
        font-size: 3rem;
    }
}

/* ===== CUSTOM CONFIRM DIALOG ===== */
.confirm-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
}

.confirm-overlay.active {
    opacity: 1;
    visibility: visible;
}

.confirm-box {
    background: linear-gradient(145deg, #1e1e2e, #1a1a2e);
    border-radius: 20px;
    padding: 28px 24px;
    width: 90%;
    max-width: 320px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 25px 50px rgba(0,0,0,0.4);
    transform: scale(0.9);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.confirm-overlay.active .confirm-box {
    transform: scale(1);
}

.confirm-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

.confirm-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: #fff;
}

.confirm-message {
    font-size: 0.9rem;
    color: #888;
    margin-bottom: 24px;
    line-height: 1.5;
}

.confirm-actions {
    display: flex;
    gap: 12px;
}

.confirm-btn {
    flex: 1;
    padding: 14px 20px;
    border-radius: 12px;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.confirm-btn.cancel {
    background: rgba(255,255,255,0.08);
    color: #aaa;
}

.confirm-btn.cancel:hover, .confirm-btn.cancel:active {
    background: rgba(255,255,255,0.12);
}

.confirm-btn.delete {
    background: linear-gradient(145deg, #ff6b6b, #ee5a5a);
    color: #fff;
    box-shadow: 0 4px 15px rgba(255,107,107,0.3);
}

.confirm-btn.delete:hover, .confirm-btn.delete:active {
    background: linear-gradient(145deg, #ff5252, #dd4a4a);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(255,107,107,0.4);
}