:root {
    --bg: #f6f7f9;
    --card: #ffffff;
    --card-muted: #eef1f5;
    --border: #d8dee8;
    --text: #17202a;
    --muted: #5f6b7a;
    --nav: #212529;
    --nav-hover: #343a40;
    --accent: #0d6efd;
    --accent-dark: #0a58ca;
    --good: #177245;
    --danger: #c62828;
    --warn: #9a6700;
    --info: #087990;
    --shadow: 0 8px 28px rgba(23, 32, 42, .06);
}

* { box-sizing: border-box; }

body {
    min-height: 100vh;
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
}

body.dark-mode {
    --bg: #111827;
    --card: #1f2937;
    --card-muted: #273548;
    --border: #3f4b5f;
    --text: #f3f4f6;
    --muted: #b5bfcc;
    --accent: #60a5fa;
    --accent-dark: #93c5fd;
    --shadow: 0 8px 28px rgba(0, 0, 0, .18);
}

a { color: var(--accent-dark); }
button,
input,
select,
textarea { font: inherit; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.site-header { position: sticky; top: 0; z-index: 1000; background: var(--nav); color: #fff; }
.header-container { display: grid; grid-template-columns: 1fr auto 1fr; width: min(1100px, calc(100% - 32px)); min-height: 62px; margin: 0 auto; align-items: center; gap: 20px; }
.site-brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; text-decoration: none; }
.brand-mark { display: grid; width: 38px; height: 38px; place-items: center; border: 1px solid rgba(255,255,255,.38); border-radius: 6px; background: rgba(255,255,255,.08); font-size: .72rem; letter-spacing: .04em; }
.app-name { color: #adb5bd; font-size: .92rem; }

.menu-toggle { display: grid; width: 42px; height: 42px; padding: 0; place-items: center; justify-self: end; border: 1px solid rgba(255,255,255,.32); border-radius: 6px; background: transparent; color: #fff; cursor: pointer; }
.menu-toggle:hover { background: var(--nav-hover); }
.menu-icon,
.menu-icon::before,
.menu-icon::after { display: block; width: 20px; height: 2px; border-radius: 2px; background: currentColor; }
.menu-icon { position: relative; }
.menu-icon::before,
.menu-icon::after { position: absolute; left: 0; content: ''; }
.menu-icon::before { top: -7px; }
.menu-icon::after { top: 7px; }

#menu { display: none; position: absolute; top: 100%; right: max(16px, calc((100% - 1100px) / 2 + 16px)); width: min(330px, calc(100vw - 32px)); max-height: calc(100vh - 80px); overflow-y: auto; border: 1px solid #343a40; border-top: 0; border-radius: 0 0 8px 8px; background: var(--nav); box-shadow: var(--shadow); }
#menu.active { display: block; }
#menu ul { margin: 0; padding: 8px; list-style: none; }
#menu li { margin: 0; }
#menu a { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 6px; color: #fff; text-decoration: none; }
#menu a:hover { background: var(--nav-hover); }
#menu i { width: 20px; color: #adb5bd; text-align: center; }
#menu .menu-separator { margin-top: 8px; padding-top: 8px; border-top: 1px solid rgba(255,255,255,.18); }

main {
    width: min(1000px, calc(100% - 32px));
    margin: 32px auto;
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--card);
    box-shadow: var(--shadow);
}

h1,
h2,
h3 { margin-top: 0; line-height: 1.2; }
h2 { font-size: 1.55rem; }

table,
.styled-table { width: 100%; margin: 20px 0; border-collapse: collapse; }
th,
td,
.styled-table th,
.styled-table td { padding: 11px 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
th,
.styled-table th { background: var(--card-muted); font-weight: 700; }
.styled-table tbody tr:hover { background: color-mix(in srgb, var(--card-muted) 65%, transparent); }

.btn,
button,
input[type="submit"] { display: inline-block; margin: 2px; padding: 9px 12px; border: 0; border-radius: 8px; background: var(--accent); color: #fff; cursor: pointer; font-weight: 700; text-align: center; text-decoration: none; }
.btn:hover,
button:hover,
input[type="submit"]:hover { filter: brightness(.92); }
.btn-view { background: var(--good); }
.btn-edit { background: var(--info); }
.btn-archive { background: var(--warn); }
.btn-delete,
.btn-reset { background: var(--danger); }
.btn-add { background: var(--accent); }
.btn-print { background: var(--info); }
.btn-email { background: #6f42c1; }
.btn-back { background: var(--muted); }

.email-send-form { display: inline-block; margin: 0; padding: 0; border: 0; background: transparent; box-shadow: none; }

.recipe-form,
.category-form,
.login-form {
    max-width: 680px;
    margin: 20px auto;
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--card-muted);
}

.login-form { max-width: 420px; }
.form-group { margin-bottom: 15px; }
.form-group label,
form > label { display: block; margin-bottom: 6px; font-weight: 700; }

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea,
.form-control,
.form-select { width: 100%; padding: 10px 11px; border: 1px solid var(--border); border-radius: 9px; background: var(--card); color: var(--text); }
textarea { min-height: 110px; resize: vertical; }
input:focus,
select:focus,
textarea:focus { border-color: var(--accent); outline: 0; box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }

.form-inline,
.recipe-filter-form { display: flex; align-items: end; gap: 10px; margin: 18px 0; }
.form-inline select,
.recipe-filter-form select { width: auto; min-width: 220px; }

.icon-menu,
.icon-menu-vertical { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 22px; }
.icon-menu-item,
.icon-menu-vertical .icon-menu-item { display: flex; width: auto; min-height: 76px; margin: 0; padding: 16px; align-items: center; flex-direction: row; gap: 12px; border: 1px solid var(--border); border-radius: 12px; background: var(--card); color: var(--text); text-align: left; text-decoration: none; transition: border-color .14s ease, transform .14s ease; }
.icon-menu-item:hover,
.icon-menu-vertical .icon-menu-item:hover { border-color: #adb8c7; transform: translateY(-2px); }
.icon-menu-item i,
.icon-menu-vertical .icon-menu-item i { width: 34px; margin: 0; color: var(--accent); font-size: 1.35rem; text-align: center; }
.icon-menu-item span,
.icon-menu-vertical .icon-menu-item span { margin: 0; text-align: left; }

.site-footer { padding: 24px 20px 34px; border-top: 1px solid var(--border); color: var(--muted); }
.footer-content { display: flex; max-width: 1000px; margin: 0 auto; align-items: center; justify-content: space-between; gap: 16px; }
.footer-content p { margin: 0; }
.theme-toggle { margin: 0; padding: 7px 10px; border: 1px solid var(--border); background: var(--card); color: var(--text); font-size: .85rem; }

.alert { padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; }
.alert-error { border-color: #efb4b4; background: #fff0f0; color: #8f1d1d; }
.alert-success { border-color: #a9d5bb; background: #edf8f1; color: #145c35; }
.dark-mode .alert-error { background: #3b2025; color: #fecaca; }
.dark-mode .alert-success { background: #173528; color: #bbf7d0; }
.form-help { display: block; margin-top: 6px; color: var(--muted); }
.user-management-form { margin-left: 0; }
.user-management-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; align-items: start; }
.user-management-grid .recipe-form { margin-top: 0; }
.user-management-grid > section:last-child:nth-child(odd) { grid-column: 1 / -1; }
.user-table-wrap { overflow-x: auto; }

@media (max-width: 760px) {
    .header-container { grid-template-columns: 1fr auto; }
    .app-name { display: none; }
    main { width: calc(100% - 20px); margin: 10px auto 24px; padding: 16px; border-radius: 12px; box-shadow: none; }
    .styled-table,
    table { display: block; overflow-x: auto; white-space: nowrap; }
    .icon-menu,
    .icon-menu-vertical { grid-template-columns: 1fr; }
    .user-management-grid { grid-template-columns: 1fr; }
    .user-management-grid > section:last-child:nth-child(odd) { grid-column: auto; }
    .form-inline,
    .recipe-filter-form { display: grid; }
    .form-inline select,
    .recipe-filter-form select { width: 100%; }
    .footer-content { flex-direction: column; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
    .icon-menu-item,
    .icon-menu-vertical .icon-menu-item { transition: none; }
}