/* Design Tokens */
:root {
    --color-primary: #1e3a5f;
    --color-primary-hover: #15293f;
    --color-primary-light: #eaeef2;
    --color-accent: #c8a45c;
    --color-text: #1f2937;
    --color-text-muted: #6b7280;
    --color-border: #d1d5db;
    --color-bg: #f4f5f7;
    --color-surface: #ffffff;
    --color-danger: #b91c1c;
    --color-danger-hover: #991b1b;
    --color-success: #15803d;
    --radius: 6px;
}

/* General Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Noto Sans KR', 'Nanum Gothic', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px;
}

/* Navbar Styles */
.navbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    display: inline-block;
}

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text);
    padding: 0.5rem;
    line-height: 1;
}

.nav-list {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    list-style: none;
    gap: 1.5rem;
    margin: 0;
}

.nav-item {
    display: flex;
    align-items: center;
}

.nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    padding: 0.5rem;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--color-primary);
}

.btn-link {
    background: none;
    border: none;
    cursor: pointer;
    font: inherit;
    color: var(--color-text);
    padding: 0.5rem;
}

.btn-link:hover {
    color: var(--color-primary);
}

/* Language Switcher */
.language-switcher select {
    padding: 0.5rem;
    border: 1px solid var(--color-border);
    border-radius: 5px;
    font-size: 0.9rem;
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    min-width: 120px;
}

/* Responsive Navbar */
@media (max-width: 768px) {
    .container {
        padding: 12px;
    }

    .navbar {
        padding: 0.75rem 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .navbar-brand {
        font-size: 1.25rem;
        margin-left: 12px;
    }

    .navbar-toggle {
        display: block;
        position: absolute;
        right: 12px;
        top: 1rem;
    }

    .nav-list {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
        padding: 1rem;
        width: 100%;
        background: var(--color-surface);
        border-top: 1px solid var(--color-border);
        position: absolute;
        top: 100%;
        left: 0;
        z-index: 999;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }

    .nav-list--open {
        display: flex;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link,
    .btn-link {
        font-size: 0.95rem;
        padding: 0.6rem 1rem;
        display: block;
        width: 100%;
        text-align: left;
        border-radius: 4px;
    }

    .nav-link:hover,
    .btn-link:hover {
        background: var(--color-bg);
    }

    .language-switcher select {
        font-size: 0.85rem;
        padding: 0.5rem;
        width: 100%;
        margin: 0.5rem 1rem;
        border-radius: 4px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 8px;
    }

    .navbar {
        padding: 0.5rem 0;
    }

    .navbar-brand {
        font-size: 1.1rem;
        margin-left: 8px;
    }

    .navbar-toggle {
        font-size: 1.25rem;
        right: 8px;
        top: 0.8rem;
    }

    .nav-list {
        padding: 0.75rem;
    }

    .nav-link,
    .btn-link {
        font-size: 0.9rem;
        padding: 0.5rem 0.8rem;
    }

    .language-switcher select {
        font-size: 0.8rem;
        padding: 0.4rem;
        margin: 0.4rem 0.8rem;
    }
}

@media (max-width: 360px) {
    .container {
        padding: 6px;
    }

    .navbar-brand {
        font-size: 1rem;
        margin-left: 6px;
    }

    .navbar-toggle {
        font-size: 1.15rem;
        right: 6px;
        top: 0.7rem;
    }

    .nav-list {
        padding: 0.5rem;
    }

    .nav-link,
    .btn-link {
        font-size: 0.85rem;
        padding: 0.4rem 0.6rem;
    }

    .language-switcher select {
        font-size: 0.75rem;
        padding: 0.3rem;
        margin: 0.3rem 0.6rem;
    }
}

/* Accessibility */
.nav-link:focus,
.btn-link:focus,
.navbar-toggle:focus,
.language-switcher select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.3);
}

@media (prefers-reduced-motion: reduce) {
    .nav-link,
    .btn-link,
    .navbar-toggle {
        transition: none;
    }
}

/* ============================================================
   App UI layer — content, components, forms, tables, alerts.
   Loaded as part of base.css (before any per-page css), so a
   page's own stylesheet still wins where it sets something.
   ============================================================ */

/* ---- Navbar polish ---- */
.navbar .container { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.navbar-brand { display: inline-flex; align-items: center; gap: 10px; letter-spacing: -0.01em; }
.navbar-brand::before {
    content: ""; width: 8px; height: 22px; border-radius: 3px; display: inline-block;
    background: linear-gradient(var(--color-accent), #b8924a);
}
.nav-link { border-radius: 6px; padding: 0.5rem 0.75rem; }
.nav-link:hover { background: var(--color-primary-light); color: var(--color-primary); }

/* ---- Content area ---- */
main.container { padding-top: 28px; padding-bottom: 56px; }

/* ---- Headings in content ---- */
main.container > h1, main.container > h2, .page-title {
    font-size: 1.6rem; font-weight: 700; color: var(--color-primary);
    padding-bottom: 0.65rem; margin-bottom: 1.5rem; position: relative; line-height: 1.25;
}
main.container > h1::after, main.container > h2::after, .page-title::after {
    content: ""; position: absolute; left: 0; bottom: 0;
    width: 52px; height: 3px; border-radius: 3px; background: var(--color-accent);
}
main.container > h3, .section-title {
    font-size: 1.15rem; font-weight: 600; color: var(--color-text); margin: 1.75rem 0 0.9rem;
}

/* ---- Page header (title + actions on one row) ---- */
.page-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.page-header > h1, .page-header > h2 { margin-bottom: 0; }

/* ---- Panels / cards ---- */
.panel, .card-surface {
    background: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    padding: 1.5rem; margin-bottom: 1.5rem;
}
.panel-title {
    font-size: 1.05rem; font-weight: 600; color: var(--color-text);
    margin-bottom: 1rem; padding-bottom: 0.6rem; border-bottom: 1px solid var(--color-border);
    display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap;
}

/* ---- Forms (global fallback; per-page css still overrides) ---- */
.form-group { margin-bottom: 1.1rem; }
.form-group > label, .form-label { display: block; font-weight: 500; color: var(--color-text); margin-bottom: 0.4rem; font-size: 0.95rem; }
.input-field,
main.container input[type="text"], main.container input[type="password"],
main.container input[type="email"], main.container input[type="number"],
main.container input[type="date"], main.container input[type="time"],
main.container input[type="tel"], main.container input[type="search"],
main.container select, main.container textarea {
    width: 100%; max-width: 460px; padding: 0.7rem 0.8rem;
    border: 1px solid var(--color-border); border-radius: 6px;
    font-family: inherit; font-size: 0.95rem; color: var(--color-text);
    background: var(--color-surface); transition: border-color .15s ease, box-shadow .15s ease;
}
.input-field:focus,
main.container input:focus, main.container select:focus, main.container textarea:focus {
    outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
}
.panel .input-field, .cardexp-grid .input-field,
.panel input, .panel select, .panel textarea { max-width: none; }

/* ---- Buttons (global) ---- */
.button-primary, .btn-primary {
    display: inline-block; background: var(--color-primary); color: #fff; border: none;
    padding: 0.7rem 1.4rem; border-radius: 6px; font-family: inherit; font-size: 0.95rem;
    font-weight: 600; cursor: pointer; text-decoration: none; transition: background .15s ease, transform .05s ease;
}
.button-primary:hover, .btn-primary:hover { background: var(--color-primary-hover); color: #fff; }
.button-primary:active { transform: translateY(1px); }
.button-primary.block, .btn-block { width: 100%; }
.button-secondary, .btn-secondary {
    display: inline-block; background: var(--color-surface); color: var(--color-primary);
    border: 1px solid var(--color-primary); padding: 0.65rem 1.3rem; border-radius: 6px;
    font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; transition: all .15s ease;
}
.button-secondary:hover, .btn-secondary:hover { background: var(--color-primary-light); }
.button-danger, .btn-danger {
    display: inline-block; background: var(--color-danger); color: #fff; border: none;
    padding: 0.5rem 0.9rem; border-radius: 6px; font: inherit; font-size: 0.9rem; font-weight: 600;
    cursor: pointer; text-decoration: none; transition: background .15s ease;
}
.button-danger:hover, .btn-danger:hover { background: var(--color-danger-hover); color: #fff; }
.btn-gold {
    display: inline-block; background: var(--color-accent); color: #1f2937; border: none;
    padding: 0.55rem 1.1rem; border-radius: 6px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none;
}
.btn-gold:hover { filter: brightness(0.96); }

/* ---- Tables (global) ---- */
.table-wrap { overflow-x: auto; }
.table-custom {
    width: 100%; border-collapse: collapse; background: var(--color-surface);
    border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden;
}
.table-custom th, .table-custom td { padding: 0.75rem 0.9rem; text-align: left; border-bottom: 1px solid var(--color-border); font-size: 0.9rem; color: var(--color-text); }
.table-custom thead th { background: var(--color-bg); font-weight: 600; }
.table-custom tbody tr:hover td { background: var(--color-primary-light); }
.table-custom tbody tr:last-child td { border-bottom: none; }

/* ---- Alerts / messages ---- */
.messages { list-style: none; margin: 0 0 1.25rem; padding: 0; }
.messages li, .alert {
    padding: 0.75rem 1rem; border-radius: 6px; margin-bottom: 0.6rem; font-size: 0.92rem;
    border-left: 4px solid var(--color-primary); background: var(--color-primary-light); color: var(--color-text);
}
.messages li.success, .alert-success { border-left-color: var(--color-success); background: #eaf6ee; }
.messages li.error, .messages li.danger, .alert-error { border-left-color: var(--color-danger); background: #fbeaea; }
.messages li.warning { border-left-color: var(--color-accent); background: #fdf6e8; }

/* ---- Stat cards ---- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.1rem 1.25rem; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06); }
.stat-card .label { font-size: 0.78rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.stat-card .value { font-size: 1.6rem; font-weight: 700; color: var(--color-primary); margin-top: 0.25rem; }

/* ---- Utilities ---- */
.muted { color: var(--color-text-muted); }
.empty-state { text-align: center; color: var(--color-text-muted); padding: 2.5rem 1rem; }
.text-danger { color: var(--color-danger); font-weight: 700; }

@media (max-width: 768px) {
    main.container > h1, main.container > h2, .page-title { font-size: 1.35rem; }
    .panel { padding: 1.1rem; }
    .input-field, main.container input, main.container select, main.container textarea { max-width: none; }
}


/* ---- Navbar fit: keep items on one line; collapse to menu earlier ---- */
.navbar-brand { white-space: nowrap; }
.nav-list { gap: 0.9rem; flex-wrap: nowrap; }
.nav-item { flex: 0 0 auto; }
.nav-link { white-space: nowrap; font-size: 0.95rem; }

/* Desktop widths: compact the links so a manager's full menu fits on one line, and wrap
   rather than overflow if it still doesn't (narrow windows, longer English labels) — an
   overflowing menu pushes Logout and the language switcher off the right edge. */
@media (min-width: 1025px) {
    .navbar .container { max-width: 1440px; }  /* the header may be wider than the 1200px content */
    .nav-list { flex: 1 1 auto; min-width: 0; flex-wrap: wrap; justify-content: flex-end; gap: 0.25rem 0.45rem; }
    .nav-link { padding: 0.5rem 0.55rem; font-size: 0.9rem; }
}

@media (max-width: 1024px) {
    .navbar .container { position: relative; }
    .navbar-toggle { display: block; position: absolute; right: 12px; top: 50%; transform: translateY(-50%); }
    .nav-list {
        display: none; flex-direction: column; align-items: flex-start; flex-wrap: wrap;
        gap: 0.4rem; padding: 0.75rem; width: 100%;
        background: var(--color-surface); border-top: 1px solid var(--color-border);
        position: absolute; top: 100%; left: 0; z-index: 999; box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
    }
    .nav-list--open { display: flex; }
    .nav-item { width: 100%; }
    .nav-item .btn-link, .nav-link { display: block; width: 100%; text-align: left; border-radius: 6px; }
    .language-switcher { padding: 0.25rem 0; }
    .language-switcher select { width: auto; min-width: 140px; margin: 0; }
}


/* ---- Form grid, checkboxes, panel input caps ---- */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 0 1.25rem; }
.form-check { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 1rem; }
.form-check-label { margin: 0 !important; font-weight: 500; }
.checkbox-input { width: 18px !important; min-width: 18px; max-width: 18px !important; height: 18px; accent-color: var(--color-primary); cursor: pointer; }
.panel .input-field,
.panel input[type="text"], .panel input[type="number"], .panel input[type="date"],
.panel input[type="email"], .panel input[type="password"], .panel select, .panel textarea { max-width: 460px; }
.panel table .input-field { max-width: none; }
.panel form > .button-primary, .panel form > .button-danger { margin-top: 0.5rem; }

/* ---- Mobile navbar: full-width container so brand & toggle don't overlap ---- */
@media (max-width: 1024px) {
    .navbar { display: block; }
    .navbar .container { width: 100%; justify-content: space-between; align-items: center; }
    .navbar-brand { margin-left: 0; }
    .navbar-toggle { top: 50%; transform: translateY(-50%); }
}

/* Who is signed in (first item in the menu): plain text, not a link. */
.nav-item.nav-user { color: var(--color-text-muted); font-size: 0.85rem; padding: 0.5rem 0.75rem; white-space: nowrap; }
.nav-user .nav-role {
    display: inline-block; margin-left: 0.25rem; padding: 0.05rem 0.5rem; border-radius: 999px;
    background: var(--color-primary-light); color: var(--color-primary); font-size: 0.72rem; font-weight: 600;
}