/* ODA NATASA - hoja de estilos principal
   Diseño simple, moderno y profesional. Sin dependencias externas. */

:root {
    --navy-900: #0b1f3a;
    --navy-800: #10294d;
    --navy-700: #163561;
    --navy-600: #1d4478;
    --blue-500: #2563eb;
    --blue-600: #1d4ed8;
    --teal-500: #0e9488;
    --amber-500: #d97706;
    --red-600: #dc2626;
    --green-600: #16a34a;
    --gray-50: #f7f8fa;
    --gray-100: #eef1f5;
    --gray-200: #e2e6ec;
    --gray-300: #cbd2dc;
    --gray-500: #6b7688;
    --gray-700: #3c4658;
    --gray-900: #1a2233;
    --radius: 10px;
    --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
    font-size: 15px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--gray-50);
    color: var(--gray-900);
    font-family: "Segoe UI", Roboto, -apple-system, BlinkMacSystemFont, Arial, sans-serif;
    line-height: 1.5;
}

a { color: var(--blue-600); text-decoration: none; }
a:hover { text-decoration: underline; }

.app-shell { min-height: 100vh; display: flex; flex-direction: column; }

/* ------------------------------------------------------------- Topbar */
.topbar {
    background: linear-gradient(90deg, var(--navy-900), var(--navy-700));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    height: 60px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 20;
}

.topbar .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; color: #fff; }
.topbar .brand .mark {
    width: 34px; height: 34px; border-radius: 8px;
    background: var(--teal-500);
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: .95rem;
}
.topbar nav { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
.topbar nav a, .topbar nav .navlabel {
    color: #cfd9ee; padding: 8px 12px; border-radius: 8px; font-size: .92rem; font-weight: 500;
}
.topbar nav a:hover { background: rgba(255,255,255,.08); text-decoration: none; color: #fff; }
.topbar nav a.active { background: rgba(255,255,255,.14); color: #fff; }
.topbar .user-box { display: flex; align-items: center; gap: 10px; }
.topbar .user-box .who { font-size: .85rem; color: #cfd9ee; text-align: right; line-height: 1.2; }
.topbar .user-box .who b { color: #fff; display: block; }
.btn-logout {
    background: rgba(255,255,255,.1); color: #fff; border: 1px solid rgba(255,255,255,.25);
    padding: 6px 12px; border-radius: 8px; font-size: .85rem; cursor: pointer;
}
.btn-logout:hover { background: rgba(255,255,255,.2); text-decoration: none; }

.main-wrap { flex: 1; padding: 24px; max-width: 1280px; margin: 0 auto; width: 100%; }

.page-header { display: flex; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.page-header h1 { font-size: 1.4rem; margin: 0 0 4px; color: var(--navy-900); }
.page-header p.subtitle { margin: 0; color: var(--gray-500); font-size: .92rem; }

/* --------------------------------------------------------------- Card */
.card {
    background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius);
    box-shadow: var(--shadow); padding: 20px; margin-bottom: 20px;
}
.card h2 { font-size: 1.05rem; margin: 0 0 14px; color: var(--navy-900); }
.card h3 { font-size: .95rem; margin: 18px 0 10px; color: var(--navy-800); }

/* -------------------------------------------------------------- Grids */
.grid { display: grid; gap: 14px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 860px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* -------------------------------------------------------------- Forms */
label { display: block; font-size: .82rem; font-weight: 600; color: var(--gray-700); margin-bottom: 5px; }
.field { margin-bottom: 14px; }
.field .hint { font-size: .76rem; color: var(--gray-500); margin-top: 4px; }
input[type=text], input[type=password], input[type=number], input[type=date],
input[type=time], input[type=datetime-local], input[type=email], select, textarea {
    width: 100%; padding: 9px 11px; border: 1px solid var(--gray-300); border-radius: 8px;
    font-size: .92rem; background: #fff; color: var(--gray-900); font-family: inherit;
}
textarea { resize: vertical; min-height: 60px; }
input:focus, select:focus, textarea:focus {
    outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
input:disabled, select:disabled, textarea:disabled { background: var(--gray-100); color: var(--gray-500); }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }
.checkbox-row label { margin: 0; }

fieldset { border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 14px 16px; margin: 0 0 16px; }
legend { font-weight: 700; color: var(--navy-800); padding: 0 6px; font-size: .88rem; }

/* ------------------------------------------------------------ Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 6px; justify-content: center;
    padding: 9px 16px; border-radius: 8px; border: 1px solid transparent;
    font-size: .88rem; font-weight: 600; cursor: pointer; background: var(--gray-100); color: var(--gray-900);
}
.btn:hover { text-decoration: none; filter: brightness(0.97); }
.btn-primary { background: var(--blue-600); color: #fff; }
.btn-primary:hover { background: var(--blue-500); }
.btn-success { background: var(--green-600); color: #fff; }
.btn-danger { background: var(--red-600); color: #fff; }
.btn-outline { background: #fff; border-color: var(--gray-300); color: var(--gray-700); }
.btn-sm { padding: 5px 10px; font-size: .78rem; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

/* ------------------------------------------------------------- Tables */
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
thead th {
    text-align: left; padding: 10px 12px; background: var(--gray-100); color: var(--gray-700);
    border-bottom: 1px solid var(--gray-200); font-size: .78rem; text-transform: uppercase; letter-spacing: .03em;
}
tbody td { padding: 10px 12px; border-bottom: 1px solid var(--gray-100); vertical-align: top; }
tbody tr:hover { background: var(--gray-50); }
.table-wrap { overflow-x: auto; }

/* -------------------------------------------------------------- Badge */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .74rem; font-weight: 700; }
.badge-draft { background: #fef3c7; color: #92400e; }
.badge-sent { background: #dcfce7; color: #166534; }
.badge-reopened { background: #dbeafe; color: #1e40af; }
.badge-role { background: var(--gray-100); color: var(--gray-700); }

/* -------------------------------------------------------------- Alert */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: .9rem; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-success { background: #dcfce7; color: #14532d; border: 1px solid #bbf7d0; }
.alert-info { background: #dbeafe; color: #1e3a8a; border: 1px solid #bfdbfe; }
.alert-warning { background: #fef3c7; color: #78350f; border: 1px solid #fde68a; }

/* --------------------------------------------------------------- Tabs */
.tabs { display: flex; gap: 4px; flex-wrap: wrap; border-bottom: 1px solid var(--gray-200); margin-bottom: 20px; }
.tabs a {
    padding: 10px 16px; border-radius: 8px 8px 0 0; font-size: .88rem; font-weight: 600; color: var(--gray-500);
    border: 1px solid transparent; margin-bottom: -1px;
}
.tabs a.active { color: var(--navy-900); border-color: var(--gray-200); border-bottom-color: #fff; background: #fff; }
.tabs a .dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-left: 6px; background: var(--gray-300); vertical-align: middle; }
.tabs a .dot.ok { background: var(--green-600); }

/* ------------------------------------------------------------ Login page */
.login-shell {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: radial-gradient(circle at top, var(--navy-700), var(--navy-900));
    padding: 20px;
}
.login-card {
    background: #fff; border-radius: 14px; padding: 34px 32px; width: 100%; max-width: 380px;
    box-shadow: 0 20px 50px rgba(0,0,0,.35);
}
.login-card .mark {
    width: 52px; height: 52px; border-radius: 12px; background: var(--teal-500); color: #fff;
    display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.2rem; margin-bottom: 14px;
}
.login-card h1 { font-size: 1.3rem; margin: 0 0 4px; color: var(--navy-900); }
.login-card p.sub { margin: 0 0 22px; color: var(--gray-500); font-size: .88rem; }
.login-card .btn-primary { width: 100%; padding: 11px; font-size: .95rem; margin-top: 6px; }

/* ------------------------------------------------------------ Dashboard */
.stat-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
@media (max-width: 900px) { .stat-cards { grid-template-columns: repeat(2, 1fr); } }
.stat-card { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow); }
.stat-card .num { font-size: 1.6rem; font-weight: 800; color: var(--navy-900); }
.stat-card .lbl { font-size: .8rem; color: var(--gray-500); margin-top: 2px; }

.vessel-tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.vessel-tile {
    background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 16px;
    box-shadow: var(--shadow); display: block; color: inherit;
}
.vessel-tile:hover { border-color: var(--blue-500); text-decoration: none; }
.vessel-tile .name { font-weight: 700; color: var(--navy-900); margin-bottom: 4px; }
.vessel-tile .meta { font-size: .8rem; color: var(--gray-500); }

/* ------------------------------------------------------------- Footer */
.app-footer { text-align: center; padding: 18px; font-size: .78rem; color: var(--gray-500); }

/* --------------------------------------------------------- Activities */
.activity-row { border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 10px; background: #fff; }
.activity-row .top { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; flex-wrap: wrap; }
.activity-row .cat { font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; font-weight: 700; color: var(--teal-500); }
.activity-row .times { font-weight: 700; color: var(--navy-900); }
.timeline-gap-warning { color: var(--amber-500); font-size: .82rem; margin-top: 8px; }

.required-mark { color: var(--red-600); }

@media print {
    .topbar, .tabs, .btn-row, .no-print { display: none !important; }
    .main-wrap { padding: 0; max-width: 100%; }
    .card { box-shadow: none; border: 1px solid #999; }
}