:root {
    --ink: #12233d;
    --ink-2: #0b1830;
    --teal: #2fb6a3;
    --teal-deep: #23917f;
    --coral: #ff6b4a;
    --coral-deep: #e8552f;
    --blue: #2a5fa5;
    --blue-deep: #1d4680;
    --bg: #f6f8fb;
    --bg-1: #dedede;
    --card: #ffffff;
    --line: #e4e9f0;
    --muted: #71809b;

    --tint-teal: #e4f8f4;
    --tint-coral: #ffede7;
    --tint-blue: #e8f0f9;
    --tint-gray: #eceff2;
    --line-strong: #c7d0dc;

    --radius-sm: 10px;
    --radius: 16px;
    --radius-lg: 24px;
    --shadow-card: 0 14px 30px -22px rgba(18, 35, 61, 0.35);
    --container: 900px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--bg-1);
    color: var(--ink);
    font-family: 'Inter', -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: 'Poppins', 'Inter', sans-serif; font-weight: 700; letter-spacing: -0.01em; }

a { color: var(--blue); }

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
    outline: 2px solid var(--teal);
    outline-offset: 2px;
}

.brand-mark {
    background: var(--coral);
    color: #fff;
    padding: 0.2rem 0.55rem;
    border-radius: 7px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.container { max-width: var(--container); width: 100%; margin: 0 auto; padding: 2rem 1.5rem; }

.page-title { margin: 0 0 0.4rem; font-size: 1.7rem; color: var(--ink-2); }
.page-subtitle { color: var(--muted); margin: 0 0 1.4rem; font-size: 0.95rem; }

.flash { padding: 0.7rem 1rem; border-radius: var(--radius-sm); margin-bottom: 1rem; font-size: 0.9rem; border: 1px solid transparent; }
.flash-success { background: var(--tint-teal); color: #1a5f53; border-color: #bfe9e1; }
.flash-error { background: var(--tint-coral); color: #93321a; border-color: #f6c8b9; }
.flash-info { background: var(--tint-blue); color: #1c3a5e; border-color: #c4d6ea; }

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    padding: 1.5rem;
    margin-bottom: 1.2rem;
}

.form-group { margin-bottom: 1rem; }
label { display: block; font-weight: 600; font-size: 0.85rem; margin-bottom: 0.35rem; color: var(--ink-2); }
.hint { color: var(--muted); font-size: 0.8rem; margin-top: 0.35rem; }

input[type=text], input[type=email], input[type=password], select, textarea {
    width: 100%;
    padding: 0.65rem 0.8rem;
    border: 1.5px solid var(--line-strong);
    border-radius: var(--radius-sm);
    background: var(--bg);
    font-size: 0.92rem;
    font-family: inherit;
    color: var(--ink);
    box-shadow: inset 0 1px 2px rgba(18, 35, 61, 0.04);
    transition: border-color .15s ease, background .15s ease, box-shadow .15s ease;
}
input::placeholder, textarea::placeholder { color: #9aa5b5; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--teal); background: #fff; box-shadow: 0 0 0 3px rgba(47, 182, 163, 0.15); }
textarea { resize: vertical; min-height: 6rem; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.65rem 1.3rem;
    border-radius: 999px;
    border: none;
    background: var(--ink-2);
    color: #fff;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: background .2s ease, transform .15s ease, box-shadow .2s ease;
}
.btn:hover { background: var(--ink); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-accent {
    background-image: linear-gradient(180deg, rgba(255,255,255,.28) 0%, rgba(255,255,255,0) 60%);
    background-color: var(--coral);
    box-shadow: 0 12px 24px -12px rgba(255, 107, 74, 0.55);
}
.btn-accent:hover { background-color: var(--coral-deep); }
.btn-danger { background: #d03b3b; }
.btn-sm { padding: 0.35rem 0.85rem; font-size: 0.8rem; }
.btn-secondary { background: var(--muted); }
.btn-outline { background: transparent; color: var(--ink-2); border: 1.5px solid var(--line); box-shadow: none; }
.btn-outline:hover { background: var(--tint-gray); color: var(--ink-2); transform: none; }

.actions-row { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; margin-bottom: 1rem; }

.badge { display: inline-flex; align-items: center; gap: 0.3rem; padding: 0.2rem 0.65rem; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.badge-green { background: var(--tint-teal); color: #1a5f53; }
.badge-red { background: var(--tint-coral); color: #93321a; }
.badge-yellow { background: #fbf3da; color: #7a5a0c; }
.badge-gray { background: var(--tint-gray); color: #4b5563; }

/* --- top nav --- */
.topnav { background: var(--ink-2); position: sticky; top: 0; z-index: 10; box-shadow: 0 6px 24px -18px rgba(12, 26, 48, 0.9); }
.topnav-inner { max-width: var(--container); margin: 0 auto; padding: 0.9rem 1.5rem; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 0.55rem; font-weight: 700; color: #fff; text-decoration: none; font-size: 1.05rem; font-family: 'Poppins', sans-serif; }
.topnav-links { display: flex; align-items: center; gap: 1.3rem; font-size: 0.88rem; }
.topnav-links a { color: rgba(255,255,255,0.75); text-decoration: none; font-weight: 500; transition: color .15s ease; }
.topnav-links a:hover { color: #fff; }
.topnav-user { color: rgba(255,255,255,0.55); }
.topnav-admin { color: rgba(255,255,255,0.5) !important; font-size: 0.82rem; }

/* --- landing choice cards --- */
.choice-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.1rem; }
.choice-card { display: block; text-decoration: none; color: inherit; }
.choice-card .card { text-align: center; height: 100%; transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease; }
.choice-card:hover .card { box-shadow: 0 20px 40px -20px rgba(18,35,61,0.35); transform: translateY(-3px); border-color: var(--teal); }
.choice-icon {
    width: 52px; height: 52px; margin: 0 auto 0.8rem;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%; background: var(--tint-coral); color: var(--coral-deep);
}
.choice-card:nth-child(2) .choice-icon { background: var(--tint-teal); color: var(--teal-deep); }
.choice-title { font-weight: 700; color: var(--ink-2); margin-bottom: 0.3rem; font-family: 'Poppins', sans-serif; }
.choice-desc { color: var(--muted); font-size: 0.88rem; line-height: 1.5; }

/* --- ticket detail / conversation --- */
.ticket-meta { display: flex; flex-wrap: wrap; gap: 0.4rem 1.2rem; align-items: center; color: var(--muted); font-size: 0.88rem; margin-bottom: 1.2rem; }
.ticket-meta strong { color: var(--ink); }

.thread { display: flex; flex-direction: column; gap: 0.9rem; margin-bottom: 1.2rem; }
.msg { max-width: 78%; padding: 0.75rem 1rem; border-radius: var(--radius); border: 1px solid var(--line); background: #fff; }
.msg-user { align-self: flex-start; background: #fff; border-bottom-left-radius: 4px; }
.msg-admin { align-self: flex-end; background: var(--tint-teal); border-color: #bfe9e1; border-bottom-right-radius: 4px; }
.msg-meta { font-size: 0.75rem; color: var(--muted); margin-bottom: 0.3rem; font-weight: 600; }
.msg-body { white-space: pre-wrap; word-wrap: break-word; font-size: 0.92rem; line-height: 1.55; }

.success-box { text-align: center; padding: 2.5rem 1.5rem; }
.success-box .choice-icon { width: 64px; height: 64px; background: var(--tint-teal); color: var(--teal-deep); }
.success-box .ticket-number {
    display: inline-block; font-size: 1.5rem; font-weight: 700; color: var(--ink-2); letter-spacing: 0.03em;
    margin: 0.7rem 0 1rem; padding: 0.4rem 1.1rem; background: var(--bg); border: 1.5px dashed var(--line); border-radius: var(--radius-sm);
    font-family: 'Poppins', sans-serif;
}

table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.6rem 0.7rem; border-bottom: 1px solid var(--line); }
th { background: var(--tint-gray); color: var(--ink-2); font-weight: 600; }
tr:hover td { background: #fafcff; }

.empty-state { text-align: center; color: var(--muted); padding: 2.5rem 1rem; }

body.auth-body {
    background: var(--ink-2);
    background-image: radial-gradient(circle at 20% 20%, rgba(47,182,163,0.18), transparent 45%),
                       radial-gradient(circle at 80% 80%, rgba(255,107,74,0.15), transparent 45%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}
.auth-wrap { width: 100%; max-width: 380px; background: #fff; border-radius: var(--radius-lg); padding: 2.2rem; box-shadow: 0 30px 60px -30px rgba(0,0,0,0.5); }
.auth-brand { text-align: center; color: var(--muted); margin: 0 0 1.4rem; }
.auth-wrap h1 { text-align: center; font-size: 1.25rem; color: var(--ink-2); margin-bottom: 0.2rem; }

/* --- hero banner --- */
.hero-banner {
    position: relative;
    width: 100%;
    height: 200px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 1.8rem;
    box-shadow: var(--shadow-card);
}
.hero-banner img { width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; }
.hero-banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(11,24,48,.5) 0%, rgba(11,24,48,.72) 100%);
}
.hero-banner-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1rem 1.5rem;
}
.hero-banner-content h1 { margin: 0 0 0.35rem; font-size: 1.7rem; color: #fff; }
.hero-banner-content p { margin: 0; color: rgba(255,255,255,0.85); font-size: 0.92rem; }

/* --- faq --- */
.faq-heading { font-size: 1.4rem; color: var(--ink-2); text-align: center; margin: 0 0 0.3rem; }
.faq-sub { color: var(--muted); text-align: center; margin: 0 0 1.8rem; font-size: 0.92rem; }
.faq-wrap { max-width: 760px; margin: 0 auto; }
.faq-group { display: grid; gap: 0.6rem; }
.faq-group + .faq-group { margin-top: 2rem; }
.faq-group-title { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--blue-deep); margin: 0 0 0.1rem; }
details { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 0 1.3rem; transition: border-color .2s ease; }
details[open] { border-color: #cbd8e8; }
summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.05rem 0; font-weight: 600; font-size: 0.92rem; color: var(--ink-2); }
summary::-webkit-details-marker { display: none; }
summary .plus { width: 27px; height: 27px; border-radius: 50%; background: var(--tint-blue); color: var(--blue-deep); display: flex; align-items: center; justify-content: center; flex: none; transition: transform .25s ease, background .25s ease, color .25s ease; }
details[open] summary .plus { transform: rotate(45deg); background: var(--coral); color: #fff; }
.faq-body { padding: 0 0 1.2rem; font-size: 0.88rem; line-height: 1.65; color: var(--muted); }

@media (max-width: 640px) {
    .topnav-inner { flex-direction: column; gap: 0.6rem; align-items: flex-start; }
    .msg { max-width: 92%; }
    .hero-banner { height: 140px; }
}