/* ============================================================
   ZeroPass · Password Center  ——  Elastic Design System v2.0
   Desktop: 70vh | Mobile: 100vh | Icons: Inline SVG (fill fixed)
   ============================================================ */

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: clamp(14px, 1.2vw + 10px, 18px);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family:
        -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto,
        Helvetica, Arial, sans-serif;
    background: #ebeef2;
    color: #1a1e2c;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(0.5rem, 2vw, 1.5rem);
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow: hidden;
}

/* ---------- Design Tokens ---------- */
:root {
    --color-brand: #0088ff;
    --color-brand-light: #0099ff;
    --color-brand-dark: #0066ff;
    --color-brand-subtle: rgba(0, 136, 255, 0.08);

    --bg-page: #ebeef2;
    --bg-chat: #f2f4f7;
    --bg-white: #ffffff;
    --bg-nav: #1a1e2c;
    --bg-input: #f0f2f5;

    --text-primary: #1a1e2c;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --text-inverse: #ffffff;

    --bubble-user: #3399ff;
    --bubble-user-text: #ffffff;
    --bubble-ai: #ffffff;
    --bubble-ai-border: #e5e7eb;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 12px 56px rgba(0, 0, 0, 0.12);

    --radius-xs: clamp(2px, 0.15rem, 4px);
    --radius-sm: clamp(4px, 0.3rem, 6px);
    --radius-md: clamp(6px, 0.5rem, 8px);
    --radius-lg: clamp(8px, 0.7rem, 12px);
    --radius-xl: clamp(12px, 1rem, 16px);
    --radius-full: 9999px;

    --space-1: clamp(2px, 0.2rem, 4px);
    --space-2: clamp(4px, 0.4rem, 8px);
    --space-3: clamp(6px, 0.6rem, 12px);
    --space-4: clamp(8px, 0.8rem, 16px);
    --space-5: clamp(10px, 1rem, 20px);
    --space-6: clamp(12px, 1.2rem, 24px);
    --space-8: clamp(16px, 1.6rem, 32px);

    --font-xs: clamp(0.6rem, 0.7vw + 0.3rem, 0.7rem);
    --font-sm: clamp(0.7rem, 0.8vw + 0.3rem, 0.8rem);
    --font-base: clamp(0.85rem, 1vw + 0.4rem, 1rem);
    --font-md: clamp(0.95rem, 1.1vw + 0.4rem, 1.1rem);
    --font-lg: clamp(1.1rem, 1.3vw + 0.5rem, 1.25rem);

    --header-height: clamp(44px, 4.5vh + 30px, 52px);
    --avatar-size: clamp(30px, 2.5vw + 20px, 40px);
    --input-height: clamp(34px, 3vw + 20px, 44px);
    --msg-max-width: clamp(70%, 78%, 85%);
    --app-max-width: clamp(600px, 70vw, 880px);

    /* 桌面端高度 70vh */
    --app-height: 70vh;
    --app-min-height: 70vh;
    --app-max-height: 70vh;

    --ease-smooth: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ---------- App Container ---------- */
.app-container {
    width: 100%;
    max-width: var(--app-max-width);
    height: var(--app-height);
    min-height: var(--app-min-height);
    max-height: var(--app-max-height);
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* ---------- Header ---------- */
.brand-header {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-4);
    height: var(--header-height);
    background: var(--bg-nav);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    z-index: 10;
}

.header-left {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--space-6);
    height: var(--space-6);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background 0.2s var(--ease-smooth);
    user-select: none;
}
.header-left:hover {
    background: rgba(255, 255, 255, 0.06);
}
.header-left:active {
    transform: scale(0.92);
}

.header-title {
    font-size: var(--font-md);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.92);
    letter-spacing: 0.02em;
    transition: opacity 0.25s var(--ease-smooth);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}
.mode-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--space-6);
    height: var(--space-6);
    background: transparent;
    border: none;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background 0.2s var(--ease-smooth);
}
.mode-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.06);
}
.mode-toggle-btn:active {
    transform: scale(0.92);
}

/* ---------- Inline SVG Icons ---------- */
.icon-back,
.icon-switch,
.icon-delete,
.icon-send {
    display: block;
    flex-shrink: 0;
}
.header-left .icon-back,
.mode-toggle-btn .icon-switch {
    width: calc(var(--font-md) * 1.2);
    height: calc(var(--font-md) * 1.2);
}
.input-area .clear-btn .icon-delete {
    width: calc(var(--font-md) * 1.1);
    height: calc(var(--font-md) * 1.1);
}
.input-area button#sendBtn .icon-send {
    width: calc(var(--font-md) * 1.1);
    height: calc(var(--font-md) * 1.1);
}

/* ---------- Chat Main ---------- */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-chat);
}

/* ---------- Messages Area ---------- */
.messages-area {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4) var(--space-4) var(--space-2);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}
.messages-area::-webkit-scrollbar {
    width: 4px;
}
.messages-area::-webkit-scrollbar-track {
    background: transparent;
}
.messages-area::-webkit-scrollbar-thumb {
    background: #d1d5db;
    border-radius: var(--radius-full);
}
.messages-area::-webkit-scrollbar-thumb:hover {
    background: #9ca3af;
}

/* ---------- Message ---------- */
.message {
    display: flex;
    align-items: flex-start;
    max-width: var(--msg-max-width);
    gap: var(--space-3);
}
.message.ai {
    align-self: flex-start;
}
.message.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message .avatar {
    flex-shrink: 0;
    width: var(--avatar-size);
    height: var(--avatar-size);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: linear-gradient(135deg, #e5e7eb, #d1d5db);
    box-shadow: var(--shadow-xs);
    margin-top: 1px;
}
.message .avatar img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.message-content {
    display: flex;
    flex-direction: column;
    max-width: 100%;
    min-width: 0;
}
.message.ai .message-content {
    align-items: flex-start;
}
.message.user .message-content {
    align-items: flex-end;
}

.msg-name {
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    margin-bottom: 1px;
    line-height: 1.4;
    padding: 0 var(--space-1);
}
.message.ai .msg-name {
    padding-left: 0;
}
.message.user .msg-name {
    padding-right: 0;
}

.msg-bubble {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-base);
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: 0.01em;
    word-break: break-word;
    border-radius: var(--radius-lg);
    position: relative;
    transition: transform 0.15s var(--ease-smooth);
}
.user .msg-bubble {
    background: var(--bubble-user);
    color: var(--bubble-user-text);
    border-bottom-right-radius: var(--radius-xs);
    box-shadow: 0 2px 8px rgba(51, 153, 255, 0.2);
}
.ai .msg-bubble {
    background: var(--bubble-ai);
    color: var(--text-primary);
    border: 1px solid var(--bubble-ai-border);
    border-bottom-left-radius: var(--radius-xs);
    box-shadow: var(--shadow-xs);
}

.msg-bubble i {
    vertical-align: middle;
    margin-right: 2px;
    font-size: 1rem;
}

.msg-time {
    font-size: var(--font-xs);
    font-weight: 400;
    color: var(--text-tertiary);
    letter-spacing: 0.02em;
    margin-top: var(--space-1);
    padding: 0 var(--space-1);
    opacity: 0.7;
}
.message.user .msg-time {
    text-align: right;
    padding-right: 0;
}
.message.ai .msg-time {
    text-align: left;
    padding-left: 0;
}

/* ---------- Message Enter Animation ---------- */
.message-enter .avatar,
.message-enter .msg-name,
.message-enter .msg-bubble,
.message-enter .msg-time {
    opacity: 0;
    transform: translateY(6px);
}
.message-enter .msg-name {
    transition-delay: 10ms;
}
.message-enter .msg-bubble {
    transition-delay: 30ms;
}
.message-enter .msg-time {
    transition-delay: 60ms;
}
.message-enter-active .avatar,
.message-enter-active .msg-name,
.message-enter-active .msg-bubble,
.message-enter-active .msg-time {
    opacity: 1;
    transform: translateY(0);
    transition:
        opacity 0.35s var(--ease-smooth),
        transform 0.35s var(--ease-smooth);
}

/* ---------- Identity Card ---------- */
.identity-card {
    background: var(--bg-white);
    padding: var(--space-3) var(--space-4);
    margin-top: var(--space-1);
    border-radius: var(--radius-md);
    border: 1px solid #f0f2f5;
    box-shadow: var(--shadow-xs);
    transition: box-shadow 0.25s var(--ease-smooth);
}
.identity-card:hover {
    box-shadow: var(--shadow-sm);
}

.identity-card .card-row {
    transition: all 0.3s var(--ease-smooth);
    transition-delay: 0ms;
}
.identity-card .card-row:nth-child(2) {
    transition-delay: 20ms;
}
.identity-card .card-row:nth-child(3) {
    transition-delay: 40ms;
}
.identity-card .card-actions {
    transition-delay: 60ms;
}
.identity-card.card-hidden .card-row,
.identity-card.card-hidden .card-actions {
    opacity: 0;
    transform: translateY(4px);
}
.identity-card.card-visible .card-row,
.identity-card.card-visible .card-actions {
    opacity: 1;
    transform: translateY(0);
}

.card-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-1) var(--space-2);
    padding: var(--space-1) 0;
    border-bottom: 1px solid #f5f6f8;
    font-family: "SF Mono", "Fira Code", monospace;
    font-size: var(--font-sm);
}
.card-row:last-child {
    border-bottom: none;
}

.card-label {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    color: var(--text-secondary);
    font-weight: 500;
    font-family: inherit;
    font-size: var(--font-sm);
    letter-spacing: 0.02em;
}
.card-label i {
    font-size: calc(var(--font-sm) * 1.1);
    color: var(--text-tertiary);
}

.card-value {
    color: var(--text-primary);
    font-weight: 400;
    text-align: right;
    word-break: break-all;
    font-size: var(--font-sm);
}
/* 密码样式 */
.card-value.password {
    color: var(--color-brand-dark);
    font-weight: 800;
    font-size: var(--font-md);
}

/* ---------- Card Actions (底部操作栏) ---------- */
.card-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-2);
    gap: var(--space-2);
}

/* 统一的操作按钮样式 */
.card-action-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    background: transparent;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius-full);
    font-size: var(--font-xs);
    font-weight: 450;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s var(--ease-smooth);
    font-family: inherit;
    white-space: nowrap;
}
.card-action-btn i {
    font-size: calc(var(--font-xs) * 1.2);
}
.card-action-btn:hover {
    background: #f9fafb;
    border-color: #d1d5db;
}
.card-action-btn:active {
    transform: scale(0.94);
}

/* 复制按钮的“已复制”状态（临时） */
.copy-pwd-btn.copied {
    color: var(--text-tertiary);
    border-color: #e5e7eb;
    background: transparent;
    cursor: default;
    pointer-events: none;
}
.copy-pwd-btn.copied:hover {
    background: transparent;
}
.copy-pwd-btn.copied:active {
    transform: none;
}

/* ---------- Input Area ---------- */
.input-area {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4) var(--space-4);
    background: var(--bg-white);
    border-top: 1px solid #f0f2f5;
}

.input-area .clear-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--input-height);
    height: var(--input-height);
    background: transparent;
    border: none;
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: background 0.2s var(--ease-smooth);
}
.input-area .clear-btn:hover {
    background: #f3f4f6;
}
.input-area .clear-btn:active {
    transform: scale(0.9);
}

.input-area input {
    flex: 1;
    height: var(--input-height);
    padding: 0 var(--space-3);
    background: var(--bg-input);
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    font-size: var(--font-base);
    font-weight: 400;
    color: var(--text-primary);
    outline: none;
    transition:
        border-color 0.2s var(--ease-smooth),
        background 0.2s var(--ease-smooth),
        box-shadow 0.2s var(--ease-smooth);
    font-family: inherit;
}
.input-area input::placeholder {
    color: var(--text-tertiary);
}
.input-area input:focus {
    background: var(--bg-white);
    border-color: var(--color-brand);
    box-shadow: 0 0 0 3px var(--color-brand-subtle);
}

.input-area button#sendBtn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--input-height);
    height: var(--input-height);
    background: var(--color-brand);
    border: none;
    border-radius: var(--radius-full);
    color: #fff;
    cursor: pointer;
    transition:
        background 0.2s var(--ease-smooth),
        transform 0.15s var(--ease-smooth);
    flex-shrink: 0;
}
.input-area button#sendBtn:hover {
    background: var(--color-brand-dark);
}
.input-area button#sendBtn:active {
    transform: scale(0.88);
}

/* ---------- Toast ---------- */
.toast-tip {
    position: fixed;
    top: var(--space-6);
    left: 50%;
    transform: translateX(-50%) translateY(-12px);
    padding: var(--space-2) var(--space-5);
    background: rgba(26, 30, 44, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-full);
    font-size: var(--font-sm);
    font-weight: 500;
    color: #fff;
    letter-spacing: 0.02em;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: all 0.35s var(--ease-smooth);
    box-shadow: var(--shadow-md);
}
.toast-tip.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ---------- Mode Indicator ---------- */
.mode-indicator {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.94);
    padding: var(--space-5) var(--space-6);
    background: rgba(26, 30, 44, 0.8);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: var(--radius-lg);
    color: #fff;
    text-align: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s var(--ease-smooth);
    box-shadow: var(--shadow-xl);
    min-width: 140px;
}
.mode-indicator.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}
.mode-indicator .mode-icon {
    display: block;
    font-size: calc(var(--font-lg) * 1.6);
    color: var(--color-brand);
    margin-bottom: var(--space-2);
}
.mode-indicator .mode-label {
    font-size: var(--font-md);
    font-weight: 500;
    letter-spacing: 0.03em;
}

/* ---------- Long Press Menu ---------- */
.message-actions-menu {
    position: fixed;
    bottom: calc(var(--input-height) + var(--space-6));
    left: 50%;
    transform: translateX(-50%) scale(0.94);
    padding: var(--space-1) 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.3);
    z-index: 999;
    min-width: 150px;
    opacity: 0;
    transition: all 0.25s var(--ease-smooth);
}
.message-actions-menu.show {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}
.message-actions-menu div {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-sm);
    color: var(--text-primary);
    cursor: pointer;
    border-radius: 0;
    transition: background 0.15s var(--ease-smooth);
}
.message-actions-menu div:hover {
    background: #f3f4f6;
}
.message-actions-menu div i {
    font-size: calc(var(--font-sm) * 1.3);
    color: var(--text-tertiary);
}

/* ---------- Pull to Refresh ---------- */
.pull-indicator {
    position: sticky;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
    padding: var(--space-1) var(--space-3);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius-full);
    font-size: var(--font-xs);
    color: var(--text-tertiary);
    box-shadow: var(--shadow-xs);
    display: flex;
    align-items: center;
    gap: var(--space-1);
    opacity: 0;
    transition: opacity 0.2s var(--ease-smooth);
    margin: 0 auto;
    width: fit-content;
}
.pull-indicator .pull-arrow {
    display: inline-block;
    transition: transform 0.3s var(--ease-smooth);
}

/* ============================================================
   Mobile Adaptive (Width < 860px OR Height < 700px)
   ============================================================ */
@media (max-width: 860px), (max-height: 700px) {
    :root {
        --app-height: 100vh;
        --app-min-height: 100vh;
        --app-max-height: 100vh;
    }
    body {
        padding: 0;
        background: var(--bg-chat);
    }
    .app-container {
        max-width: 100%;
        border-radius: 0;
        box-shadow: none;
        background: var(--bg-chat);
    }

    .brand-header {
        position: sticky;
        top: 0;
        z-index: 50;
        height: clamp(50px, 7vh, 60px);
        padding: 0 var(--space-3);
        padding-top: env(safe-area-inset-top, 12px);
        background: var(--bg-nav);
        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        align-items: center;
    }
    .header-title {
        font-size: var(--font-md);
    }

    .message {
        max-width: 90%;
        gap: var(--space-2);
    }
    .message .avatar {
        width: clamp(32px, 4vw, 40px);
        height: clamp(32px, 4vw, 40px);
    }
    .msg-bubble {
        padding: var(--space-2) var(--space-3);
        font-size: var(--font-base);
    }

    .identity-card {
        padding: var(--space-2) var(--space-3);
    }
    .card-row {
        font-size: var(--font-sm);
        padding: 2px 0;
    }

    .input-area {
        padding: var(--space-2) var(--space-3) var(--space-3);
        padding-bottom: max(var(--space-3), env(safe-area-inset-bottom, 12px));
    }
    .input-area .clear-btn,
    .input-area input,
    .input-area button#sendBtn {
        height: clamp(40px, 5vw, 48px);
        width: clamp(40px, 5vw, 48px);
    }
    .input-area input {
        width: auto;
        flex: 1;
        font-size: var(--font-base);
        padding: 0 var(--space-3);
    }
    .input-area button#sendBtn {
        width: clamp(40px, 5vw, 48px);
    }

    .toast-tip {
        top: calc(var(--header-height) + var(--space-3));
    }
    .mode-indicator {
        padding: var(--space-4) var(--space-5);
        min-width: 120px;
    }
    .mode-indicator .mode-icon {
        font-size: calc(var(--font-lg) * 1.4);
    }
    .message-actions-menu {
        bottom: calc(var(--input-height) + var(--space-6));
    }

    /* 移动端图标尺寸微调 */
    .icon-back,
    .icon-switch {
        width: calc(var(--font-md) * 1.3) !important;
        height: calc(var(--font-md) * 1.3) !important;
    }
    .icon-delete,
    .icon-send {
        width: calc(var(--font-md) * 1.2) !important;
        height: calc(var(--font-md) * 1.2) !important;
    }
}

/* ============================================================
   Extra small screens (≤400px)
   ============================================================ */
@media (max-width: 400px) {
    .brand-header {
        height: clamp(44px, 6vh, 52px);
        padding-top: env(safe-area-inset-top, 8px);
    }
    .header-title {
        font-size: var(--font-sm);
    }
    .message .avatar {
        width: clamp(28px, 3.5vw, 34px);
        height: clamp(28px, 3.5vw, 34px);
    }
    .msg-bubble {
        font-size: calc(var(--font-base) * 0.95);
        padding: var(--space-1) var(--space-2);
    }
    .input-area .clear-btn,
    .input-area input,
    .input-area button#sendBtn {
        height: clamp(34px, 4.5vw, 40px);
        width: clamp(34px, 4.5vw, 40px);
    }
    .input-area input {
        font-size: calc(var(--font-base) * 0.95);
    }
    .card-action-btn {
        font-size: calc(var(--font-xs) * 0.9);
        padding: 0 var(--space-1);
    }
}

/* ---------- Remix Icon global style ---------- */
i[class^="ri-"] {
    display: inline-block;
    vertical-align: middle;
    line-height: 1;
    font-size: 1.2em;
    color: inherit;
    flex-shrink: 0;
}