/* static/css/base.css (Fully Refactored with Latest Mobile Tweaks) */

/* --- 1. 全域設計變數 (Design Tokens) --- */
:root {
    /* 品牌與狀態顏色 */
    --color-primary: #0d6efd;
    --color-primary-light-gradient-start: #e7f4fd;
    --color-primary-light-gradient-end: #f8fafb;
    --color-admin: #d63384;
    --color-admin-hover: #b02a6e;
    --color-admin-bg-gradient-start: #ffe5f4;
    --color-admin-bg-gradient-end: #ffeaf6;

    /* 文字顏色 */
    --text-color-dark: #343a40;
    --text-color-base: #495057;
    --text-color-light: #ffffff;
    --text-color-muted: rgba(255, 255, 255, 0.7);

    /* 背景顏色 */
    --bg-color-body: #f8f9fa;
    --bg-color-card: #ffffff;
    --bg-color-navbar: #ffffff;
    --bg-color-footer: #212529;
    --bg-color-dropdown: rgba(255, 255, 255, 0.98);
    --bg-color-copy-btn: #6c757d;
    --bg-color-copy-btn-hover: #5a6268;
    --bg-color-copy-btn-disabled: #adb5bd;

    /* 邊框 */
    --border-color-base: #e9ecef;
    --border-radius-sm: 0.5rem;
    --border-radius-md: 10px;
    --border-radius-lg: 20px;

    /* 陰影 */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-md: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-dropdown: 0 8px 32px 0 rgba(30,50,90,0.13), 0 1.5px 5px rgba(80,100,140,0.10);
    --shadow-dropdown-item-hover: 0 3px 12px rgba(15,85,200,0.07);

    /* 字體 */
    --font-size-base: 1rem;
    --font-size-lg: 1.09rem;
    --font-size-sm: 0.9rem;

    /* 過渡效果 */
    --transition-color: color 0.2s;
    --transition-opacity: opacity 0.2s ease-out;
    --transition-dropdown-item: background 0.18s, color 0.13s, box-shadow 0.20s;

    /* navbar 高度（for toast/flash messages safe zone） */
    --navbar-height: 64px;
}


/* --- 2. 基礎與佈局 (Sticky Footer 實現) --- */
html, body {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    background-color: var(--bg-color-body); 
}

#loading {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(248, 249, 250, 0.62);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 12000;
}

#loading .spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.3rem;
    box-shadow: 0 10px 30px rgba(30, 50, 90, 0.12);
}

main.main-container {
    flex: 1 0 auto;
}

.page-transition-host {
    position: relative;
    flex: 1 0 auto;
    min-height: 0;
}

.page-transition-host--full-bleed {
    width: 100%;
    max-width: none;
    margin: 0;
    padding-left: 0;
    padding-right: 0;
}

.page-transition-host--full-bleed #main-content,
#main-content.main-content--full-bleed {
    width: 100%;
    max-width: none;
    margin: 0;
    padding-left: 0;
    padding-right: 0;
    background: transparent;
}

.is-global-chrome-hidden {
    display: none !important;
}

.content-card {
    background-color: var(--bg-color-card);
    padding: 2rem;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-sm);
    margin-top: 2rem;
    margin-bottom: 2rem;
}

#main-content.fade-out {
    opacity: 0;
    transition: var(--transition-opacity);
}
#main-content.fade-in {
    opacity: 1;
    transition: opacity 0.3s ease-in;
}

#main-content.is-page-transition-obscured {
    opacity: 0;
}


.page-transition-shell {
    position: absolute;
    inset: 0;
    z-index: 40;
    pointer-events: none;
    opacity: 0;
    transition: opacity 180ms ease-out;
}

.page-transition-host.is-page-transitioning .page-transition-shell {
    opacity: 1;
}

.page-transition-shell__veil {
    position: absolute;
    inset: 0;
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(9, 19, 35, 0.18) 0%, rgba(9, 19, 35, 0.12) 42%, rgba(9, 19, 35, 0.08) 100%);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: background 220ms ease, backdrop-filter 220ms ease, -webkit-backdrop-filter 220ms ease;
}

.page-transition-shell.is-fresh-pending .page-transition-shell__veil {
    background: linear-gradient(180deg, rgba(9, 19, 35, 0.28) 0%, rgba(9, 19, 35, 0.22) 42%, rgba(9, 19, 35, 0.16) 100%);
    backdrop-filter: blur(7px);
    -webkit-backdrop-filter: blur(7px);
}

.page-transition-shell.is-full-bleed-target .page-transition-shell__veil {
    background: linear-gradient(180deg, rgba(6, 17, 28, 0.86) 0%, rgba(6, 17, 28, 0.82) 42%, rgba(5, 11, 18, 0.8) 100%);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
}

.page-transition-shell.is-full-bleed-target.is-fresh-pending .page-transition-shell__veil {
    background: linear-gradient(180deg, rgba(6, 17, 28, 0.94) 0%, rgba(6, 17, 28, 0.9) 42%, rgba(5, 11, 18, 0.88) 100%);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

.page-transition-shell__status {
    position: absolute;
    top: 18px;
    left: 18px;
    right: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 2;
}

.page-transition-shell__chip {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: 0.42rem 0.8rem;
    border-radius: 999px;
    background: rgba(8, 19, 40, 0.84);
    border: 1px solid rgba(122, 181, 255, 0.2);
    color: rgba(235, 244, 255, 0.92);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    box-shadow: 0 14px 28px rgba(10, 18, 34, 0.18);
}

.page-transition-shell__rail {
    position: relative;
    overflow: hidden;
    height: 2px;
    width: min(260px, 42vw);
    border-radius: 999px;
    background: rgba(113, 153, 214, 0.22);
}

.page-transition-shell__rail::after {
    content: "";
    position: absolute;
    inset: 0 auto 0 -40%;
    width: 40%;
    border-radius: inherit;
    background: linear-gradient(90deg, rgba(122, 181, 255, 0) 0%, rgba(122, 181, 255, 0.9) 55%, rgba(190, 224, 255, 0.95) 100%);
    animation: page-transition-rail 1.05s ease-in-out infinite;
}

.page-transition-shell__stage {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.page-transition-shell__stage > * {
    pointer-events: none;
    width: 100%;
    min-height: 100%;
}

.page-transition-shell__stale,
.page-transition-shell__fresh {
    transition:
        opacity 840ms ease,
        transform 840ms ease,
        filter 840ms ease;
}

.page-transition-shell__stale {
    opacity: 0;
}

.page-transition-shell__fresh {
    opacity: 0;
}

.page-transition-shell.is-loading .page-transition-shell__stale {
    opacity: 0.42;
    transform: translateY(0);
    filter: blur(0);
}

.page-transition-shell.is-settling .page-transition-shell__stale {
    opacity: 0;
    transform: translateY(-2px);
    filter: blur(2px);
}

.page-transition-shell.is-settling .page-transition-shell__fresh {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
}

.page-transition-shell.is-fresh-pending .page-transition-shell__fresh {
    opacity: 0 !important;
    transform: translateY(2px);
    filter: blur(1px);
}

.page-transition-shell__stage[aria-hidden="true"] {
    visibility: hidden;
}

@keyframes page-transition-rail {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(360%);
    }
}

@media (prefers-reduced-motion: reduce) {
    .page-transition-shell,
    .page-transition-shell__stale,
    .page-transition-shell__fresh {
        transition-duration: 1ms !important;
        animation: none !important;
    }

    .page-transition-shell__rail::after {
        animation: none;
        transform: translateX(100%);
    }
}


/* --- 3. 導覽列 (Navbar) 優化 --- */
.navbar.navbar-main {
    box-shadow: var(--shadow-md);
    background-color: var(--bg-color-navbar) !important;
}

.navbar.navbar-main.home-navbar {
    background: linear-gradient(180deg, rgba(12, 19, 36, 0.94) 0%, rgba(17, 28, 49, 0.9) 100%) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 18px 38px rgba(10, 18, 34, 0.16);
}

.home-navbar .navbar-brand,
.home-navbar .nav-link,
.home-navbar .navbar-toggler {
    color: rgba(244, 247, 255, 0.92) !important;
}

.home-navbar .navbar-brand:hover,
.home-navbar .nav-link:hover,
.home-navbar .nav-link.active {
    color: #ffffff !important;
}

.home-navbar .btn.btn-primary {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.18);
    color: #ffffff;
}

.home-navbar .btn.btn-primary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.22);
    color: #ffffff;
}

.home-navbar .dropdown-menu {
    background: rgba(16, 24, 40, 0.96);
    border-color: rgba(255, 255, 255, 0.08);
}

.home-navbar .dropdown-item {
    color: rgba(240, 244, 255, 0.9);
}

.home-navbar .dropdown-item:hover,
.home-navbar .dropdown-item:focus {
    background: linear-gradient(90deg, rgba(52, 86, 179, 0.28) 0%, rgba(38, 61, 120, 0.34) 100%);
    color: #ffffff;
    box-shadow: none;
}

.home-navbar .dropdown-divider {
    border-top-color: rgba(255, 255, 255, 0.1);
}

.home-navbar .dropdown-premium-note {
    color: rgba(213, 224, 255, 0.72);
}

.navbar-main .navbar-brand {
    font-weight: 500;
    color: var(--text-color-dark);
}

.nav-logo-brand {
    height: 32px;
    width: auto;
    display: block;
}

.navbar-main .nav-link {
    color: var(--text-color-base);
    transition: var(--transition-color);
}

.navbar-main .nav-link:hover,
.navbar-main .nav-link.active {
    color: var(--color-primary);
}

.nav-premium-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 0.45rem;
    padding: 0.14rem 0.45rem;
    border-radius: 999px;
    border: 1px solid rgba(209, 166, 92, 0.28);
    background: rgba(209, 166, 92, 0.14);
    color: #b57914;
    font-size: 0.66rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    line-height: 1;
    vertical-align: middle;
}

.dropdown-premium-note {
    padding: 0.2rem 1.35rem 0.55rem;
    color: #8b9bb4;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

#navbar-logout-btn {
    cursor: pointer;
}

.nav-logo-aplus {
    height: 30px;
    width: auto;
}

.nav-admin {
    color: var(--color-admin) !important;
}
.nav-admin:hover {
    color: var(--color-admin-hover) !important;
}


/* --- 4. 頁腳 (Footer) 優化 --- */
.footer-main {
    background-color: var(--bg-color-footer);
    color: var(--text-color-muted);
    padding: 2rem 0;
    margin-top: auto;
    flex-shrink: 0;
}

.footer-main p {
    margin: 0;
    font-size: var(--font-size-sm);
}


/* --- 5. 元件 (Components) --- */
#flash-messages,
.toast-container.position-fixed {
    position: fixed;
    /* ★★★ 這段是控制「整組」通知的「位置」，保持不變 ★★★ */
    top: 75px !important;
    right: 20px;
    z-index: 9999 !important;
}

/* ✨✨✨【核心修改】✨✨✨
 * 新增這段來控制「單一」通知方塊的「大小」。
 * 寬度固定，高度則會依文字內容自動調整。
*/
#toast-container > .toast,
.toast-container > .toast {
    width: min(380px, calc(100vw - 40px)) !important;
    max-width: calc(100vw - 40px);
    opacity: 0.95 !important;
}


@media (max-width: 768px) {
    #flash-messages,
    .toast-container.position-fixed {
        top: 85px !important;
        left: 12px;
        right: 12px;
    }

    #toast-container > .toast,
    .toast-container > .toast {
        width: 100% !important;
        max-width: 100%;
    }
}

.copy-button {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: var(--bg-color-copy-btn);
    color: var(--text-color-light);
    padding: 4px 8px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: background-color 0.3s, opacity 0.3s;
    opacity: 0.7;
}
.copy-button:hover {
    background-color: var(--bg-color-copy-btn-hover);
    opacity: 1;
}
.copy-button:disabled {
    background-color: var(--bg-color-copy-btn-disabled);
    color: var(--text-color-light);
    cursor: not-allowed;
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    border-radius: 12px;
    color: #fff;
    font-size: 16px;
    z-index: 1000;
    opacity: 0.94;
    box-shadow: 0 16px 32px rgba(14, 20, 34, 0.22);
    animation: fallbackNotificationFadeIn 0.5s, fallbackNotificationFadeOut 0.5s 4.5s;
    transition: background-color 0.3s, color 0.3s;
}

.notification.success {
    background-color: #28a745;
}

.notification.error {
    background-color: #dc3545;
}

.notification.info {
    background-color: #17a2b8;
}

.notification.warning {
    background-color: #f59f00;
    color: #fff;
}


/* --- 6. 呼吸感・現代化 dropdown-menu --- */
.dropdown-menu {
    border-radius: var(--border-radius-lg) !important;
    box-shadow: var(--shadow-dropdown);
    padding: 16px 0;
    min-width: 240px;
    background: var(--bg-color-dropdown);
    border: 1px solid var(--border-color-base);
    backdrop-filter: blur(10px);
    animation: dropdownFadeIn 0.22s cubic-bezier(.34,1.56,.64,1);
    margin-top: 14px !important;
}
@keyframes dropdownFadeIn {
    from { opacity: 0; transform: translateY(10px) scale(0.98);}
    to   { opacity: 1; transform: translateY(0) scale(1);}
}

@keyframes fallbackNotificationFadeIn {
    from { opacity: 0; }
    to { opacity: 0.94; }
}

@keyframes fallbackNotificationFadeOut {
    from { opacity: 0.94; }
    to { opacity: 0; }
}

.dropdown-item {
    display: flex;
    align-items: center;
    font-size: var(--font-size-lg);
    padding: 14px 34px 14px 22px;
    border-radius: var(--border-radius-md);
    margin: 3px 10px;
    gap: 16px;
    color: var(--text-color-base);
    letter-spacing: 0.01em;
    background: transparent;
    transition: var(--transition-dropdown-item);
}

.dropdown-item .fa-fw {
    width: 1.6em;
    text-align: center;
    opacity: 0.92;
    font-size: 1.2em;
}

.dropdown-item:hover,.dropdown-item:focus {
    background: linear-gradient(90deg, var(--color-primary-light-gradient-start) 65%, var(--color-primary-light-gradient-end) 100%);
    color: var(--color-primary);
    box-shadow: var(--shadow-dropdown-item-hover);
}

.dropdown-divider {
    margin: 8px 0;
    border-top: 1.5px solid var(--border-color-base);
    opacity: 1;
}

.dropdown-menu-end {
    right: 0 !important;
    left: auto !important;
}

.dropdown-item.nav-admin,.dropdown-item.text-danger {
    color: var(--color-admin) !important;
}

.dropdown-item.nav-admin:hover,.dropdown-item.text-danger:hover {
    background: linear-gradient(90deg, var(--color-admin-bg-gradient-start) 60%, var(--color-admin-bg-gradient-end) 100%);
    color: var(--color-admin-hover) !important;
}


/* --- 7. 無障礙與響應式設計 --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .dropdown-menu {
        animation: none;
    }
}

/* 合併後的行動裝置樣式 */
@media (max-width: 768px) {
    .content-card {
        padding: 1.5rem;
    }
    .dropdown-menu {
        min-width: 140px;
        padding: 7px 0;
        border-radius: 14px !important;
        margin-top: 10px !important;
    }
    .dropdown-item {
        font-size: var(--font-size-base);
        padding: 9px 18px 9px 12px;
        border-radius: 7px;
        margin: 2px 6px;
        gap: 9px;
    }
    .dropdown-item .fa-fw {
        font-size: 1.08em;
        width: 1.25em;
    }
    .dropdown-divider {
        margin: 4px 0;
    }
}