/* ==========================================================================
   SRILS HPC — Shared Design Layer
   梧桐超算中心 · 统一视觉规范
   Loaded by templates/base.html.
   Palette: SRILS green (#1B5E20 / #2E7D32) + gold (#C5A059) on paper white.
   ========================================================================== */

:root {
    /* Brand */
    --srils-green: #1B5E20;
    --srils-green-light: #2E7D32;
    --srils-green-600: #388E3C;
    --srils-green-100: #E8F5E9;
    --srils-green-050: #F4FAF4;

    --srils-gold: #C5A059;
    --srils-gold-light: #D4B483;
    --srils-gold-ink: #8A6D2F;   /* readable gold for text on white (4.9:1) */
    --srils-gold-100: #FBF4E7;

    /* Neutrals */
    --srils-text: #1d1d1f;
    --srils-body: #34383c;
    --srils-muted: #5f6368;
    --srils-faint: #8a8f96;
    --srils-line: #e6e6ea;
    --srils-line-soft: #f0f0f3;
    --srils-paper: #f5f5f7;
    --srils-bg: #ffffff;

    --srils-radius-sm: 8px;
    --srils-radius: 14px;
    --srils-radius-lg: 20px;

    --srils-shadow-sm: 0 2px 8px rgba(0, 0, 0, .04);
    --srils-shadow: 0 10px 30px rgba(0, 0, 0, .05);
    --srils-shadow-lg: 0 24px 60px rgba(27, 94, 32, .10);
    --srils-shadow-green: 0 10px 24px rgba(27, 94, 32, .18);

    /* Bootstrap rebrand: primary becomes SRILS green (no default blue left) */
    --bs-primary: #1B5E20;
    --bs-primary-rgb: 27, 94, 32;
    --bs-link-color: #1B5E20;
    --bs-link-color-rgb: 27, 94, 32;
    --bs-link-hover-color: #2E7D32;
    --bs-link-hover-color-rgb: 46, 125, 50;
    --bs-secondary-color: #5f6368;
    --bs-body-color: #1d1d1f;
    --bs-border-color: #e6e6ea;
}

/* --------------------------------------------------------------------------
   Focus visibility (keyboard users must always see where they are)
   -------------------------------------------------------------------------- */
:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
    outline: 3px solid var(--srils-gold);
    outline-offset: 2px;
    border-radius: 4px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 10000;
    background: var(--srils-green);
    color: #fff !important;
    padding: .6rem 1.1rem;
    border-radius: 0 0 var(--srils-radius-sm) 0;
    font-weight: 600;
    text-decoration: none !important;
}
.skip-link:focus {
    left: 0;
}

/* --------------------------------------------------------------------------
   Buttons — one family, one rhythm
   -------------------------------------------------------------------------- */
.btn-srils,
.btn-primary-custom {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    background: linear-gradient(135deg, var(--srils-green) 0%, var(--srils-green-light) 100%);
    color: #fff !important;
    padding: .62rem 1.5rem;
    font-weight: 600;
    font-size: .86rem;
    letter-spacing: .04em;
    border: 1px solid transparent;
    border-radius: 999px;
    text-decoration: none !important;
    line-height: 1.4;
    box-shadow: var(--srils-shadow-green);
    transition: transform .25s cubic-bezier(.2, .8, .2, 1), box-shadow .25s ease, filter .25s ease;
}
.btn-srils:hover,
.btn-primary-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 34px rgba(27, 94, 32, .28);
    color: #fff !important;
    filter: saturate(1.08);
}
.btn-srils:active,
.btn-primary-custom:active {
    transform: translateY(0);
}
.btn-srils:disabled,
.btn-primary-custom:disabled,
.btn-srils.disabled {
    opacity: .55;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Compact variant */
.btn-srils.btn-sm,
.btn-srils-sm {
    padding: .38rem 1rem;
    font-size: .78rem;
    box-shadow: 0 6px 14px rgba(27, 94, 32, .16);
}

/* Outline variant (secondary action) */
.btn-srils-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    background: transparent;
    color: var(--srils-green) !important;
    border: 1.5px solid var(--srils-green);
    border-radius: 999px;
    padding: .55rem 1.4rem;
    font-weight: 600;
    font-size: .86rem;
    text-decoration: none !important;
    transition: all .25s ease;
}
.btn-srils-outline:hover {
    background: var(--srils-green);
    color: #fff !important;
    box-shadow: var(--srils-shadow-green);
}

/* Gold accent variant (call to action / pricing) */
.btn-gold {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    background: linear-gradient(135deg, var(--srils-gold) 0%, var(--srils-gold-light) 100%);
    color: var(--srils-green) !important;
    border: none;
    border-radius: 999px;
    padding: .62rem 1.6rem;
    font-weight: 700;
    font-size: .86rem;
    text-decoration: none !important;
    box-shadow: 0 10px 24px rgba(197, 160, 89, .35);
    transition: transform .25s ease, box-shadow .25s ease;
}
.btn-gold:hover {
    transform: translateY(-2px);
    color: var(--srils-green) !important;
    box-shadow: 0 18px 38px rgba(197, 160, 89, .45);
}
.btn-gold:disabled { opacity: .6; cursor: not-allowed; transform: none; }

/* Subtle ghost button used inside tables / cards */
.btn-ghost {
    background: #fff;
    color: var(--srils-green) !important;
    border: 1px solid var(--srils-line);
    border-radius: var(--srils-radius-sm);
    padding: .35rem .75rem;
    font-size: .82rem;
    font-weight: 600;
    transition: all .2s ease;
}
.btn-ghost:hover {
    border-color: var(--srils-green);
    background: var(--srils-green-050);
    color: var(--srils-green) !important;
}

/* Loading state on async buttons */
.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}
.btn-loading::after {
    content: '';
    position: absolute;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, .45);
    border-top-color: #fff;
    animation: srils-spin .7s linear infinite;
}
.btn-gold.btn-loading::after,
.btn-submit.btn-loading::after,
.btn-outline-secondary.btn-loading::after {
    border-color: rgba(27, 94, 32, .35);
    border-top-color: var(--srils-green);
}
@keyframes srils-spin { to { transform: rotate(360deg); } }

/* --------------------------------------------------------------------------
   Rebrand Bootstrap's default blue onto SRILS green
   -------------------------------------------------------------------------- */
.btn-primary {
    --bs-btn-bg: var(--srils-green);
    --bs-btn-border-color: var(--srils-green);
    --bs-btn-hover-bg: var(--srils-green-light);
    --bs-btn-hover-border-color: var(--srils-green-light);
    --bs-btn-active-bg: var(--srils-green);
    --bs-btn-active-border-color: var(--srils-green);
    --bs-btn-disabled-bg: var(--srils-green);
    --bs-btn-disabled-border-color: var(--srils-green);
}
.btn-outline-primary {
    --bs-btn-color: var(--srils-green);
    --bs-btn-border-color: var(--srils-green);
    --bs-btn-hover-bg: var(--srils-green);
    --bs-btn-hover-border-color: var(--srils-green);
    --bs-btn-active-bg: var(--srils-green);
    --bs-btn-active-border-color: var(--srils-green);
    --bs-btn-disabled-color: var(--srils-green);
    --bs-btn-disabled-border-color: var(--srils-green);
}
.border-primary { border-color: var(--srils-green) !important; }
.link-primary { color: var(--srils-green) !important; }
.text-primary { color: var(--srils-green) !important; }

/* --------------------------------------------------------------------------
   Brand utilities
   -------------------------------------------------------------------------- */
.text-srils { color: var(--srils-green) !important; }
.text-srils-light { color: var(--srils-green-light) !important; }
.text-gold { color: var(--srils-gold-ink) !important; }
.bg-srils { background-color: var(--srils-green) !important; }
.bg-srils-soft { background-color: var(--srils-green-100) !important; }
.border-srils { border-color: var(--srils-green) !important; }
.rounded-srils { border-radius: var(--srils-radius) !important; }

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.srils-card,
.card-modern {
    background: #fff;
    border: 1px solid var(--srils-line-soft);
    border-radius: var(--srils-radius-lg);
    box-shadow: var(--srils-shadow-sm);
    transition: transform .3s cubic-bezier(.2, .8, .2, 1), box-shadow .3s ease, border-color .3s ease;
}
.srils-card-hover:hover,
.card-modern:hover {
    transform: translateY(-4px);
    border-color: var(--srils-green-100);
    box-shadow: var(--srils-shadow-lg);
}

.glass-panel {
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, .7);
    border-radius: var(--srils-radius-lg);
    box-shadow: var(--srils-shadow);
}

/* --------------------------------------------------------------------------
   Section headings — single definition, used by every page
   -------------------------------------------------------------------------- */
.section-title {
    display: flex;
    align-items: center;
    gap: .6rem;
    font-family: var(--font-serif, 'Noto Serif SC', serif);
    font-weight: 800;
    font-size: 1.32rem;
    color: var(--srils-green) !important;
    margin-bottom: 1.25rem;
    letter-spacing: .01em;
}
.section-title::before {
    content: '';
    display: block;
    width: 5px;
    height: 1.35em;
    border-radius: 4px;
    background: linear-gradient(180deg, var(--srils-green) 0%, var(--srils-gold) 100%);
    flex: 0 0 auto;
}
.section-title .st-icon {
    color: var(--srils-gold);
    font-size: 1.1rem;
}
.section-subtitle {
    color: var(--srils-muted);
    font-size: .88rem;
    margin-top: -.5rem;
    margin-bottom: 1.5rem;
}

/* Page header block (title + description + actions) */
.srils-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding-bottom: 1.25rem;
    margin-bottom: 1.75rem;
    border-bottom: 1px solid var(--srils-line);
}
.srils-page-header .ph-title {
    font-family: var(--font-serif, 'Noto Serif SC', serif);
    font-weight: 800;
    font-size: 1.6rem;
    color: var(--srils-green);
    margin: 0;
    display: flex;
    align-items: center;
    gap: .65rem;
}
.srils-page-header .ph-title i { color: var(--srils-gold); }
.srils-page-header .ph-desc {
    color: var(--srils-muted);
    font-size: .9rem;
    margin: .4rem 0 0;
}
.page-container { padding: 2.5rem 0 4rem; }

/* Breadcrumb */
.srils-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .35rem;
    font-size: .82rem;
    color: var(--srils-muted);
    margin-bottom: 1rem;
    padding: 0;
    list-style: none;
}
.srils-breadcrumb li { display: flex; align-items: center; gap: .35rem; }
.srils-breadcrumb li + li::before {
    content: '\F285';              /* bootstrap-icons chevron-right */
    font-family: 'bootstrap-icons';
    color: var(--srils-faint);
    font-size: .7rem;
}
.srils-breadcrumb a {
    color: var(--srils-muted);
    text-decoration: none;
    transition: color .2s ease;
}
.srils-breadcrumb a:hover { color: var(--srils-green); }
.srils-breadcrumb .active { color: var(--srils-green); font-weight: 600; }

/* --------------------------------------------------------------------------
   Empty states — icon + message (+ optional action)
   -------------------------------------------------------------------------- */
.empty-state {
    text-align: center;
    padding: 2.75rem 1.25rem;
    color: var(--srils-muted);
    background: var(--srils-green-050);
    border: 1px dashed var(--srils-green-100);
    border-radius: var(--srils-radius);
}
.empty-state .es-icon {
    width: 58px;
    height: 58px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--srils-green-light);
    background: #fff;
    border: 1px solid var(--srils-green-100);
}
.empty-state .es-title {
    font-weight: 700;
    color: var(--srils-body);
    margin: 0 0 .35rem;
    font-size: .95rem;
}
.empty-state .es-text {
    font-size: .84rem;
    margin: 0;
    color: var(--srils-muted);
}
.empty-state .es-action { margin-top: 1.1rem; }

/* --------------------------------------------------------------------------
   Tables
   -------------------------------------------------------------------------- */
.srils-table {
    --bs-table-bg: transparent;
    margin-bottom: 0;
}
.srils-table > thead th {
    background: var(--srils-green-050);
    color: var(--srils-muted);
    font-size: .76rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    border-bottom: 1px solid var(--srils-line);
    padding: .85rem 1rem;
    white-space: nowrap;
}
.srils-table > tbody td {
    padding: .85rem 1rem;
    font-size: .88rem;
    border-color: var(--srils-line-soft);
    vertical-align: middle;
}
.srils-table > tbody tr { transition: background-color .2s ease; }
.srils-table > tbody tr:hover > * { background-color: var(--srils-green-050); }
.srils-table thead th:first-child { border-top-left-radius: var(--srils-radius-sm); }
.srils-table thead th:last-child { border-top-right-radius: var(--srils-radius-sm); }

/* Compact variant */
.table-compact td { padding: .7rem .8rem !important; font-size: .84rem !important; }
.table-compact th { padding: .6rem .8rem !important; }

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */
.form-label {
    font-weight: 600;
    font-size: .85rem;
    color: var(--srils-body);
    margin-bottom: .4rem;
}
.form-label .req { color: #C62828; margin-left: .15rem; }
.form-label .optional {
    font-weight: 400;
    color: var(--srils-faint);
    font-size: .78rem;
    margin-left: .35rem;
}
.form-control,
.form-select {
    border: 1px solid #dcdce1;
    border-radius: var(--srils-radius-sm);
    font-size: .92rem;
    padding: .55rem .85rem;
    color: var(--srils-text);
    transition: border-color .2s ease, box-shadow .2s ease;
}
.form-control:focus,
.form-select:focus {
    border-color: var(--srils-green-light);
    box-shadow: 0 0 0 3px rgba(46, 125, 50, .14);
}
.form-control::placeholder { color: #a3a8ae; }
.form-control[readonly] { background: var(--srils-paper); color: var(--srils-muted); }
.form-control:disabled, .form-select:disabled { background: var(--srils-paper); }
.form-text { color: var(--srils-faint); font-size: .78rem; }

/* --------------------------------------------------------------------------
   Badges / status pills
   -------------------------------------------------------------------------- */
.srils-badge {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    font-size: .74rem;
    font-weight: 600;
    padding: .22rem .6rem;
    border-radius: 999px;
    border: 1px solid transparent;
    white-space: nowrap;
}
.srils-badge--green { background: var(--srils-green-100); color: var(--srils-green); border-color: rgba(46, 125, 50, .25); }
.srils-badge--gold { background: var(--srils-gold-100); color: var(--srils-gold-ink); border-color: rgba(197, 160, 89, .35); }
.srils-badge--muted { background: #f1f2f4; color: var(--srils-muted); border-color: #e2e3e6; }
.srils-badge--danger { background: #fdecea; color: #b3261e; border-color: rgba(179, 38, 30, .2); }

/* --------------------------------------------------------------------------
   Misc components
   -------------------------------------------------------------------------- */
.srils-icon-tile {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    background: var(--srils-green-100);
    color: var(--srils-green);
    flex: 0 0 auto;
    transition: background .3s ease, color .3s ease, transform .3s ease;
}
.srils-icon-tile--gold { background: var(--srils-gold-100); color: var(--srils-gold-ink); }
.srils-icon-tile--muted { background: #f1f2f4; color: var(--srils-muted); }

/* Modal header used across pages */
.card-header-custom {
    background: linear-gradient(135deg, var(--srils-green) 0%, var(--srils-green-light) 100%);
    color: #fff;
    padding: 1rem 1.5rem;
    border: none;
}
.card-header-custom .modal-title { color: #fff; }

/* Dark brand table header (market comparison) */
.srils-table-dark > thead th {
    background: var(--srils-green) !important;
    color: #fff !important;
    border-color: rgba(255, 255, 255, .18) !important;
}
.srils-table-dark > thead th .text-muted { color: rgba(255, 255, 255, .75) !important; }

/* Pricing page price tiers — three distinguishable, brand-safe colours */
.price-in { color: var(--srils-green) !important; }
.price-coop { color: var(--srils-gold-ink) !important; }
.price-std { color: var(--srils-text) !important; }

/* Section icon medallion used on the pricing page */
.price-medallion {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    background: linear-gradient(135deg, var(--srils-green-100), #c8e6c9);
    color: var(--srils-green);
}
.price-medallion--gold { background: linear-gradient(135deg, var(--srils-gold-100), #f0e0c4); color: var(--srils-gold-ink); }
.price-medallion--slate { background: linear-gradient(135deg, #eef1f3, #dbe1e6); color: #4a5560; }

/* Info banner (brand) */
.srils-notice {
    display: flex;
    align-items: flex-start;
    gap: .75rem;
    padding: .9rem 1.1rem;
    border-radius: var(--srils-radius);
    background: var(--srils-green-050);
    border: 1px solid var(--srils-green-100);
    color: var(--srils-body);
    font-size: .88rem;
}
.srils-notice i { color: var(--srils-green-light); font-size: 1.05rem; line-height: 1.4; }

/* Responsive tables helper */
.table-responsive { -webkit-overflow-scrolling: touch; }
@media (max-width: 767.98px) {
    .srils-table { font-size: .82rem; }
    .srils-table > tbody td,
    .srils-table > thead th { padding: .65rem .7rem; }
    .section-title { font-size: 1.15rem; }
    .srils-page-header .ph-title { font-size: 1.35rem; }
}

/* Motion preferences */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
        scroll-behavior: auto !important;
    }
}