:root {
    --primary: #5e5ce6;
    --primary-dark: #4f4dd1;
    --primary-soft: rgba(94, 92, 230, 0.12);
    --bg: #f5f7fb;
    --surface: #ffffff;
    --sidebar-bg: #1a1b3e;
    --sidebar-text: #c8c9e0;
    --text: #0f172a;
    --muted: #64748b;
    --border: #e2e8f0;
    --success: #16a34a;
    --danger: #dc2626;
    --warn: #f59e0b;
    --info: #2563eb;

    --status-em_negociacao: #94a3b8;
    --status-liberado_apto: #dc2626;
    --status-processo_certificacao: #2563eb;
    --status-concluido: #7c3aed;
    --status-cancelado: #1f2937;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { color: var(--text); margin: 0 0 0.75rem; }

.muted { color: var(--muted); }

/* ===== Login ===== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #5e5ce6 0%, #7873e9 50%, #9d7fea 100%);
    padding: 2rem;
}
.login-card {
    background: var(--surface);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
    width: 100%;
    max-width: 420px;
}
.login-card__logo {
    display: block;
    width: 180px;
    height: auto;
    margin: 0 auto 1.5rem;
}
.login-card h1 {
    margin: 0 0 1.5rem;
    font-size: 1.35rem;
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.02em;
}
.login-error {
    background: #fef2f2;
    color: #7f1d1d;
    border: 1px solid #fecaca;
    padding: 0.7rem 0.9rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

/* ===== Layout admin ===== */
body.admin {
    display: grid;
    grid-template-columns: 240px 1fr;
    grid-template-rows: 60px 1fr;
    grid-template-areas: "sidebar topbar" "sidebar main";
    min-height: 100vh;
}
.sidebar {
    grid-area: sidebar;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}
.sidebar__brand {
    padding: 0 1.5rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 1rem;
}
.sidebar__logo { display: block; width: 150px; height: auto; }
.sidebar__section {
    padding: 1rem 1.5rem 0.4rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.4);
    font-weight: 600;
}
.sidebar__nav { display: flex; flex-direction: column; }
.sidebar__nav a {
    color: var(--sidebar-text);
    padding: 0.7rem 1.5rem;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    border-left: 3px solid transparent;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.65rem;
}
.sidebar__nav a:hover {
    background: rgba(255,255,255,0.05);
    color: #fff;
    text-decoration: none;
}
.sidebar__nav a.is-active {
    background: var(--primary-soft);
    color: #fff;
    border-left-color: var(--primary);
    font-weight: 600;
}
.sidebar__nav i { width: 18px; text-align: center; opacity: 0.85; }

.topbar {
    grid-area: topbar;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0 1.5rem;
}
.topbar__user { display: flex; align-items: center; gap: 1rem; }
.topbar__name { font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 0.5rem; }
.topbar__role {
    background: var(--primary-soft);
    color: var(--primary-dark);
    font-size: 0.7rem;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.05em;
}
.logout-form { margin: 0; }

.content { grid-area: main; padding: 2rem; max-width: 1600px; width: 100%; }

/* ===== Page header ===== */
.page-header { margin-bottom: 1.5rem; display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.page-header h1 { margin: 0 0 0.2rem; font-size: 1.55rem; font-weight: 700; letter-spacing: -0.02em; }
.page-header p { margin: 0; color: var(--muted); }
.breadcrumb {
    list-style: none;
    padding: 0;
    margin: 0 0 0.5rem;
    display: flex;
    gap: 0.4rem;
    font-size: 0.82rem;
    color: var(--muted);
}
.breadcrumb li:not(:last-child)::after {
    content: '›';
    margin-left: 0.4rem;
    opacity: 0.5;
}

/* ===== Card ===== */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.card h2 { margin: 0 0 1rem; font-size: 1.05rem; font-weight: 600; }
.card__header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap; }
.card__header h2 { margin: 0; }

/* ===== Stats ===== */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.1rem 1.25rem;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
}
.stat__label { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600; }
.stat__value { font-size: 1.7rem; font-weight: 700; line-height: 1.1; margin-top: 0.25rem; }
.stat__icon {
    width: 38px; height: 38px; border-radius: 10px;
    background: var(--primary-soft); color: var(--primary-dark);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.05rem;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
    padding: 0.55rem 1rem; border-radius: 8px; font-size: 0.88rem; font-weight: 600;
    cursor: pointer; border: 1px solid transparent; line-height: 1;
    transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.05s;
    background: var(--primary); color: #fff; text-decoration: none;
}
.btn:hover { background: var(--primary-dark); color: #fff; text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn--ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn--ghost:hover { background: #f1f5f9; color: var(--text); }
.btn--danger { background: var(--danger); }
.btn--danger:hover { background: #b91c1c; }
.btn--success { background: var(--success); }
.btn--success:hover { background: #15803d; }
.btn--sm { padding: 0.35rem 0.7rem; font-size: 0.8rem; }
.btn--lg { padding: 0.8rem 1.5rem; font-size: 0.95rem; width: 100%; }
.btn--block { width: 100%; }

/* ===== Forms ===== */
.form-row { display: grid; gap: 1rem; margin-bottom: 1rem; }
.form-row--2 { grid-template-columns: repeat(2, 1fr); }
.form-row--3 { grid-template-columns: repeat(3, 1fr); }
.form-row--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 760px) {
    .form-row--2, .form-row--3, .form-row--4 { grid-template-columns: 1fr; }
}
.form-group { display: flex; flex-direction: column; gap: 0.35rem; }
.form-group > label { font-size: 0.82rem; font-weight: 600; color: var(--text); }
.form-group .required { color: var(--danger); }
.form-control, .form-select {
    width: 100%; padding: 0.55rem 0.75rem; border: 1px solid var(--border);
    border-radius: 8px; font-size: 0.9rem; background: #fff; color: var(--text);
    font-family: inherit;
}
.form-control:focus, .form-select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.form-control[disabled] { background: #f8fafc; color: var(--muted); }
.form-actions { display: flex; gap: 0.5rem; justify-content: flex-end; margin-top: 1rem; }
.form-actions--center { justify-content: center; }
.form-help { font-size: 0.78rem; color: var(--muted); }

/* ===== Tabs ===== */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; flex-wrap: wrap; }
.tabs__btn {
    background: transparent; border: 0; padding: 0.75rem 1.1rem;
    font-weight: 600; color: var(--muted); cursor: pointer; font-size: 0.92rem;
    border-bottom: 3px solid transparent; margin-bottom: -1px;
}
.tabs__btn:hover { color: var(--text); }
.tabs__btn.is-active { color: var(--primary-dark); border-bottom-color: var(--primary); }
.tab-panel { display: none; }
.tab-panel.is-active { display: block; }

/* ===== DataTables overrides ===== */
table.dataTable { font-size: 0.88rem; width: 100% !important; border-collapse: collapse; }
table.dataTable thead th {
    background: #f8fafc; color: var(--text);
    font-weight: 600;
    border-bottom: 1px solid var(--border) !important;
    padding: 0.7rem 0.85rem !important;
    white-space: nowrap;
}
table.dataTable tbody td {
    vertical-align: middle;
    padding: 0.65rem 0.85rem !important;
    border-top: 1px solid var(--border);
}
table.dataTable tbody tr:hover { background: #f8fafc; }
table.dataTable tbody td code {
    background: #f1f5f9; color: var(--primary-dark);
    padding: 0.1rem 0.5rem; border-radius: 5px; font-size: 0.78rem;
    white-space: nowrap;
}

.dataTables_wrapper .dt-buttons { display: flex; gap: 0.35rem; flex-wrap: wrap; margin-bottom: 0.75rem; }
.dataTables_wrapper .dt-buttons .btn,
.dataTables_wrapper .dt-buttons .dt-button {
    background: var(--primary); color: #fff; border: 1px solid var(--primary);
    border-radius: 6px; padding: 0.4rem 0.85rem; font-size: 0.82rem; font-weight: 600;
    text-decoration: none; cursor: pointer; line-height: 1.2;
}
.dataTables_wrapper .dt-buttons .btn:hover,
.dataTables_wrapper .dt-buttons .dt-button:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }

.dataTables_wrapper .dataTables_filter,
.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_paginate {
    margin: 0.5rem 0;
    font-size: 0.85rem;
    color: var(--muted);
}
.dataTables_filter input {
    border: 1px solid var(--border); border-radius: 6px;
    padding: 0.35rem 0.65rem; margin-left: 0.4rem; font-size: 0.85rem;
}
.dataTables_filter input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.dataTables_length select {
    border: 1px solid var(--border); border-radius: 6px;
    padding: 0.25rem 1.6rem 0.25rem 0.5rem; font-size: 0.85rem;
}

.dataTables_wrapper .dataTables_paginate { display: flex; justify-content: flex-end; }
.dataTables_paginate ul.pagination {
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
}
.dataTables_paginate ul.pagination li { list-style: none !important; }
.dataTables_paginate ul.pagination li::before,
.dataTables_paginate ul.pagination li::marker { content: none !important; }
.dataTables_paginate .page-link,
.dataTables_paginate .paginate_button {
    background: #fff !important;
    border: 1px solid var(--border) !important;
    color: var(--text) !important;
    padding: 0.35rem 0.75rem !important;
    border-radius: 6px !important;
    text-decoration: none !important;
    font-size: 0.85rem !important;
    line-height: 1.3 !important;
    cursor: pointer;
    margin: 0 !important;
}
.dataTables_paginate .page-link:hover,
.dataTables_paginate .paginate_button:hover {
    background: var(--primary-soft) !important;
    border-color: var(--primary) !important;
    color: var(--primary-dark) !important;
}
.dataTables_paginate .page-item.active .page-link,
.dataTables_paginate .paginate_button.current,
.dataTables_paginate .paginate_button.current:hover {
    background: var(--primary) !important;
    color: #fff !important;
    border-color: var(--primary) !important;
}
.dataTables_paginate .page-item.disabled .page-link,
.dataTables_paginate .paginate_button.disabled,
.dataTables_paginate .paginate_button.disabled:hover {
    color: #cbd5e1 !important;
    background: #f8fafc !important;
    cursor: not-allowed;
}

/* ===== Status badges ===== */
.status {
    display: inline-flex; align-items: center; gap: 0.35rem;
    padding: 0.2rem 0.6rem; border-radius: 999px; font-size: 0.76rem; font-weight: 600;
    background: rgba(0,0,0,0.06); color: var(--text);
    white-space: nowrap;
}
.status::before { content: ''; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.status--em_negociacao { color: var(--status-em_negociacao); background: rgba(148,163,184,0.18); }
.status--liberado_apto { color: var(--status-liberado_apto); background: rgba(220,38,38,0.12); }
.status--processo_certificacao { color: var(--status-processo_certificacao); background: rgba(37,99,235,0.12); }
.status--concluido { color: var(--status-concluido); background: rgba(124,58,237,0.12); }
.status--cancelado { color: var(--status-cancelado); background: rgba(31,41,55,0.12); }

.status-cell { display: flex; align-items: center; gap: 0.6rem; }
.status-bar { width: 6px; min-height: 28px; border-radius: 3px; }
.status-bar--em_negociacao { background: var(--status-em_negociacao); }
.status-bar--liberado_apto { background: var(--status-liberado_apto); }
.status-bar--processo_certificacao { background: var(--status-processo_certificacao); }
.status-bar--concluido { background: var(--status-concluido); }
.status-bar--cancelado { background: var(--status-cancelado); }

/* ===== Aluno (perfil) ===== */
.aluno-layout { display: grid; grid-template-columns: 320px 1fr; gap: 1.5rem; align-items: start; }
@media (max-width: 1080px) { .aluno-layout { grid-template-columns: 1fr; } }
.aluno-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; text-align: center; }
.aluno-avatar {
    width: 110px; height: 110px; border-radius: 50%;
    background: var(--primary-soft); color: var(--primary-dark);
    display: flex; align-items: center; justify-content: center;
    font-size: 3rem; margin: 0 auto 1rem;
}
.aluno-nome { font-weight: 700; font-size: 1.05rem; margin-bottom: 0.25rem; }
.aluno-info-line {
    display: flex; justify-content: space-between; gap: 0.5rem;
    padding: 0.55rem 0; border-bottom: 1px solid var(--border);
    font-size: 0.86rem;
}
.aluno-info-line:last-child { border-bottom: 0; }
.aluno-info-line span:first-child { color: var(--muted); font-weight: 600; }

/* ===== Documentos ===== */
.docs-row { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 1rem; }
.doc-chip {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.35rem 0.7rem; border-radius: 999px;
    background: #f1f5f9; color: var(--muted); font-size: 0.8rem;
}
.doc-chip.is-on { background: rgba(22,163,74,0.12); color: var(--success); }
.doc-chip.is-on i { color: var(--success); }

.docs-list { list-style: none; padding: 0; margin: 0; }
.docs-list li {
    display: flex; align-items: center; gap: 0.6rem;
    padding: 0.55rem 0; border-bottom: 1px solid var(--border);
    font-size: 0.88rem;
}
.docs-list li:last-child { border-bottom: 0; }
.docs-list .docs-list__name { flex: 1; }
.docs-list .docs-list__type {
    background: var(--primary-soft); color: var(--primary-dark);
    padding: 0.15rem 0.5rem; border-radius: 6px; font-size: 0.72rem; font-weight: 600;
}

/* ===== Toasts ===== */
.toast-stack {
    position: fixed; right: 1.2rem; bottom: 1.2rem; z-index: 9999;
    display: flex; flex-direction: column; gap: 0.5rem;
    max-width: min(420px, calc(100vw - 2rem));
}
.toast {
    display: flex; align-items: flex-start; gap: 0.7rem;
    padding: 0.85rem 1rem; border-radius: 10px;
    background: #fff; border: 1px solid #e2e8f0;
    box-shadow: 0 12px 32px rgba(15,23,42,0.18), 0 2px 6px rgba(15,23,42,0.06);
    font-size: 0.92rem; line-height: 1.4; color: #0f172a;
    animation: toast-in 0.22s ease-out;
    border-left: 4px solid var(--primary);
}
.toast--success { border-left-color: var(--success); background: #f0fdf4; color: #14532d; }
.toast--danger  { border-left-color: var(--danger); background: #fef2f2; color: #7f1d1d; }
.toast--warning { border-left-color: var(--warn); background: #fffbeb; color: #78350f; }
.toast--info    { border-left-color: var(--info); background: #f0f9ff; color: #0c4a6e; }
.toast__msg { flex: 1; word-break: break-word; }
.toast__close { background: transparent; border: 0; cursor: pointer; color: inherit; opacity: 0.55; font-size: 1.2rem; line-height: 1; padding: 0 0.2rem; }
.toast__close:hover { opacity: 1; }
.toast.is-leaving { animation: toast-out 0.25s ease-in forwards; }
@keyframes toast-in  { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toast-out { to { opacity: 0; transform: translateY(8px); } }

/* ===== Misc ===== */
.empty-state { text-align: center; padding: 2.5rem 1rem; color: var(--muted); }
.empty-state i { font-size: 2.5rem; opacity: 0.4; display: block; margin-bottom: 0.5rem; }

.alert { padding: 0.7rem 0.9rem; border-radius: 8px; margin-bottom: 1rem; font-size: 0.88rem; }
.alert--info { background: #eff6ff; color: #1e3a8a; border: 1px solid #bfdbfe; }
.alert--warning { background: #fffbeb; color: #78350f; border: 1px solid #fde68a; }

.actions-cell { display: flex; gap: 0.3rem; }
.icon-btn {
    background: transparent; border: 1px solid var(--border); border-radius: 6px;
    width: 30px; height: 30px; display: inline-flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--muted); transition: color 0.15s, border-color 0.15s, background 0.15s;
    text-decoration: none;
}
.icon-btn:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-soft); text-decoration: none; }
.icon-btn--danger:hover { color: var(--danger); border-color: var(--danger); background: rgba(220,38,38,0.08); }