/* EVNNPC - Dien tap thuc chien ATTT 2026 */
:root {
  --evn-blue: #0b4f9e;
  --evn-blue-dark: #07326a;
  --evn-blue-light: #1e73c8;
  --evn-red: #d7262c;
  --evn-ink: #10233c;
  --evn-muted: #5b6b80;
  --evn-line: #e2e8f0;
  --evn-bg: #f4f7fb;
}

body {
  font-family: "Be Vietnam Pro", system-ui, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--evn-bg);
  color: var(--evn-ink);
}

main[role="main"] { padding-top: 74px !important; }
h1, h2, h3, h4, h5, .h1, .h2, .h3 { font-weight: 700; letter-spacing: -0.015em; }

/* ---------- Navbar ---------- */
.evn-navbar {
  background: linear-gradient(90deg, var(--evn-blue-dark) 0%, var(--evn-blue) 55%, var(--evn-blue-light) 100%) !important;
  box-shadow: 0 2px 14px rgba(7, 50, 106, .25);
  padding: .5rem 0;
}
.evn-brand { display: flex; align-items: center; gap: .65rem; }
.evn-brand-mark {
  font-weight: 800; font-size: 1.25rem; color: #fff; letter-spacing: .5px;
  border-right: 2px solid rgba(255, 255, 255, .35); padding-right: .65rem; line-height: 1;
}
.evn-brand-mark span { color: #ffd34d; }
.evn-brand-text { font-size: .9rem; font-weight: 500; color: rgba(255, 255, 255, .92); line-height: 1.1; }
.evn-navbar .nav-link {
  color: rgba(255, 255, 255, .88) !important; font-weight: 500; font-size: .95rem;
  padding: .45rem .85rem !important; border-radius: 8px; transition: background .15s, color .15s;
  white-space: nowrap;
}
.evn-navbar .nav-link:hover { background: rgba(255, 255, 255, .14); color: #fff !important; }
.evn-admin-link { background: rgba(255, 255, 255, .16); }
.evn-btn-login {
  background: #fff; color: var(--evn-blue-dark) !important; font-weight: 600;
  border-radius: 8px; padding: .4rem 1.1rem; white-space: nowrap;
}
.evn-btn-login:hover { background: #ffd34d; }
.evn-navbar .dropdown-menu { border: 0; box-shadow: 0 10px 30px rgba(16, 35, 60, .18); border-radius: 10px; }

/* ---------- Hero ---------- */
.evn-hero { position: relative; width: 100%; overflow: hidden; background: var(--evn-blue-dark); }
.evn-hero-img { display: block; width: 100%; height: auto; object-fit: cover; }
.evn-hero-overlay {
  position: absolute; inset: auto 0 0 0;
  background: linear-gradient(to top, rgba(7, 50, 106, .92), rgba(7, 50, 106, 0));
  padding: 3rem 1rem 1.75rem; text-align: center;
}
.evn-hero-overlay h1 { color: #fff; font-size: clamp(1.1rem, 2.4vw, 2rem); margin: 0 0 .4rem; text-shadow: 0 2px 12px rgba(0, 0, 0, .35); }
.evn-hero-overlay p { color: rgba(255, 255, 255, .9); margin: 0; font-size: clamp(.8rem, 1.2vw, 1rem); }

/* ---------- Sections / cards ---------- */
.evn-section { padding: 3rem 0; }
.evn-section-title { text-align: center; margin-bottom: 2rem; }
.evn-section-title h2 { font-size: clamp(1.3rem, 2.2vw, 1.9rem); margin-bottom: .5rem; }
.evn-section-title p { color: var(--evn-muted); margin: 0; }
.evn-card {
  background: #fff; border: 1px solid var(--evn-line); border-radius: 14px; padding: 1.5rem; height: 100%;
  transition: transform .18s, box-shadow .18s;
}
.evn-card:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(16, 35, 60, .12); }
.evn-card-icon {
  width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  background: rgba(11, 79, 158, .1); color: var(--evn-blue); font-size: 1.2rem; margin-bottom: .9rem;
}
.evn-card h3 { font-size: 1.1rem; margin-bottom: .5rem; }
.evn-card p { color: var(--evn-muted); font-size: .93rem; margin: 0; }
.evn-steps { counter-reset: evnstep; list-style: none; padding: 0; margin: 0; }
.evn-steps li { position: relative; padding-left: 2.6rem; margin-bottom: 1rem; color: var(--evn-muted); }
.evn-steps li::before {
  counter-increment: evnstep; content: counter(evnstep);
  position: absolute; left: 0; top: 0; width: 1.8rem; height: 1.8rem; border-radius: 50%;
  background: var(--evn-blue); color: #fff; font-weight: 700; font-size: .85rem;
  display: flex; align-items: center; justify-content: center;
}
.evn-steps li strong { color: var(--evn-ink); display: block; }

/* ---------- Challenge cards ---------- */
.challenge-button, .challenge-button .card { border-radius: 14px !important; }
.challenge-button .card {
  border: 1px solid var(--evn-line) !important; box-shadow: 0 2px 10px rgba(16, 35, 60, .06);
  transition: transform .15s, box-shadow .15s;
}
.challenge-button .card:hover { transform: translateY(-3px); box-shadow: 0 14px 30px rgba(16, 35, 60, .14); }
.challenge-button .card-title { font-weight: 700; color: var(--evn-blue-dark); }

/* ---------- Report form in challenge modal ---------- */
.manual-form .form-label { font-weight: 600; font-size: .9rem; color: var(--evn-ink); }
.manual-form .form-control { border-radius: 10px; border-color: #cfd8e3; font-size: .93rem; }
.manual-form .form-control:focus { border-color: var(--evn-blue-light); box-shadow: 0 0 0 .2rem rgba(30, 115, 200, .15); }
#manual-submit { border-radius: 10px; font-weight: 600; background: var(--evn-blue); border-color: var(--evn-blue); }
#manual-submit:hover { background: var(--evn-blue-dark); border-color: var(--evn-blue-dark); }
.submit-row .col-12.col-sm-8, .submit-row .col-12.col-sm-4 { width: 100%; max-width: 100%; flex: 0 0 100%; }
.key-submit { margin-top: .75rem !important; }
#manual-submit.btn { height: auto !important; padding: .6rem 1rem; }

/* ---------- Tables / badges ---------- */
.table { background: #fff; border-radius: 12px; overflow: hidden; }
.table thead th { background: #eef3f9; color: var(--evn-blue-dark); font-weight: 600; border-bottom: 0; font-size: .9rem; }
.badge { font-weight: 600; letter-spacing: .2px; }

/* ---------- Jumbotron (inner pages) ---------- */
.jumbotron {
  background: linear-gradient(120deg, var(--evn-blue-dark), var(--evn-blue)) !important;
  color: #fff; border-radius: 0; padding: 2.2rem 0; margin-bottom: 2rem;
}
.jumbotron h1 { color: #fff; font-size: clamp(1.3rem, 2.4vw, 2rem); }
.jumbotron p, .jumbotron small { color: rgba(255, 255, 255, .88); }

/* ---------- Footer ---------- */
.evn-footer { background: var(--evn-ink); color: rgba(255, 255, 255, .7); padding: 1.1rem 0; margin-top: 3rem; }
.evn-footer small { color: rgba(255, 255, 255, .7); }

/* ---------- Dark mode ---------- */
[data-bs-theme="dark"] { --evn-bg: #0e1726; --evn-ink: #e6edf7; --evn-line: #243246; --evn-muted: #9fb0c7; }
[data-bs-theme="dark"] body { background: var(--evn-bg); color: var(--evn-ink); }
[data-bs-theme="dark"] .evn-card, [data-bs-theme="dark"] .table { background: #16233a; }
[data-bs-theme="dark"] .evn-card h3 { color: var(--evn-ink); }
[data-bs-theme="dark"] .table thead th { background: #1d2d48; color: #cfe0f7; }

@media (max-width: 991.98px) {
  .evn-brand-text { display: none; }
  .evn-hero-overlay { position: static; background: var(--evn-blue-dark); padding: 1.5rem 1rem; }
}

/* ---------- Challenge board + modal tweaks ---------- */
.challenge-value { display: none; }
.challenge-button { background: #fff !important; color: var(--evn-ink) !important; border: 1px solid var(--evn-line) !important;
  border-radius: 14px !important; box-shadow: 0 2px 10px rgba(16,35,60,.06); transition: transform .15s, box-shadow .15s; }
.challenge-button:hover { transform: translateY(-3px); box-shadow: 0 14px 30px rgba(16,35,60,.14); border-color: var(--evn-blue-light) !important; }
.evn-chal-name { font-size: 1.35rem; font-weight: 800; color: var(--evn-blue-dark); margin-bottom: .5rem; }
.evn-chal-cta { display: inline-block; font-size: .85rem; font-weight: 600; color: #fff; background: var(--evn-blue);
  padding: .3rem .8rem; border-radius: 999px; }
.category-header h3 { font-size: 1.15rem; color: var(--evn-muted); text-transform: uppercase; letter-spacing: .06em; }
#challenge-window .modal-content { border: 0; border-radius: 16px; }
#challenge-window .challenge-name { color: var(--evn-blue-dark); }
#challenge-window .challenge-desc { display: block; margin: 1rem 0 1.25rem; color: var(--evn-ink); }
[data-bs-theme="dark"] .challenge-button { background: #16233a !important; color: var(--evn-ink) !important; }
[data-bs-theme="dark"] .evn-chal-name { color: #cfe0f7; }

/* ---------- Official EVNNPC logo on a white badge ---------- */
.evn-brand-logo { display: inline-flex; align-items: center; background: #fff; border-radius: 9px;
  padding: 4px 10px; box-shadow: 0 1px 4px rgba(0, 0, 0, .18); }
.evn-brand-logo img { height: 40px; width: auto; display: block; }
.evn-brand-text { border-left: 2px solid rgba(255, 255, 255, .35); padding-left: .65rem; }
@media (max-width: 991.98px) { .evn-brand-logo img { height: 32px; } }

@media (max-width: 991.98px) { main[role="main"] { padding-top: 66px !important; } }