:root {
    --primary: #0a1636;
    --secondary: #3f80ff;
    --accent: #3db558;
    --bg: #f4f7ff;
    --text: #0d1b3a;
    --muted: #5c6a84;
    --card: #ffffff;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: var(--bg);
    color: var(--text);
    line-height: 1.55;
}

.container {
    width: min(1100px, 92%);
    margin: 0 auto;
}

.portal-header {
    background: var(--primary);
    color: white;
    position: sticky;
    top: 0;
    z-index: 200;
    box-shadow: 0 8px 24px rgba(10, 22, 54, 0.2);
}

.header-inner {
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    text-decoration: none;
    color: white;
    font-size: 1.35rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand span {
    color: var(--accent);
}

.brand-logo {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    object-fit: contain;
    background: rgba(255, 255, 255, 0.06);
}

nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

nav a {
    color: white;
    text-decoration: none;
    opacity: 0.9;
}

nav a:hover {
    opacity: 1;
}

.portal-main {
    padding: 2.2rem 0 3rem;
}

.card {
    background: var(--card);
    border: 1px solid #dee7fd;
    border-radius: 14px;
    padding: 1.2rem;
    box-shadow: 0 12px 24px rgba(10, 22, 54, 0.06);
}

.auth-card h1 {
    font-size: 1.8rem;
    margin-bottom: 0.4rem;
}

.auth-card > p {
    color: var(--muted);
    margin-bottom: 1rem;
}

.auth-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.auth-form h2 {
    font-size: 1.2rem;
    margin-bottom: 0.3rem;
}

label {
    font-weight: 600;
    font-size: 0.95rem;
}

input, select {
    border: 1px solid #c7d5fb;
    border-radius: 8px;
    padding: 0.62rem 0.72rem;
    font-size: 1rem;
}

input:focus, select:focus {
    outline: 2px solid rgba(63, 128, 255, 0.25);
    border-color: var(--secondary);
}

.status {
    margin-top: 0.8rem;
    color: var(--primary);
    font-weight: 600;
    min-height: 1.2rem;
}

.btn {
    background: var(--secondary);
    color: white;
    border: 0;
    padding: 0.62rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.btn:hover {
    filter: brightness(0.95);
}

.btn-accent {
    background: var(--accent);
}

.btn-ghost {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: white;
}

.btn-ghost.dark {
    border-color: #8ea5e9;
    color: var(--primary);
}

.portal-content {
    margin-top: 1rem;
    display: grid;
    gap: 1rem;
}

.hero h2 {
    margin-bottom: 0.4rem;
}

.chips {
    margin-top: 0.8rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.chip {
    background: #eaf0ff;
    color: var(--primary);
    border-radius: 999px;
    padding: 0.36rem 0.68rem;
    font-size: 0.88rem;
    font-weight: 600;
}

.billing-actions {
    margin-top: 0.8rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
}

.small-note {
    margin-top: 0.5rem;
    color: var(--muted);
    font-size: 0.88rem;
}

.lock-notice {
    margin-top: 0.7rem;
    border: 1px dashed #9eb5f7;
    border-radius: 10px;
    padding: 0.8rem;
    color: var(--muted);
    display: flex;
    gap: 0.6rem;
    align-items: center;
}

.curriculum-grid {
    margin-top: 0.8rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.8rem;
}

.module-card {
    border: 1px solid #dbe5fd;
    border-radius: 12px;
    padding: 0.8rem;
    background: #fbfcff;
}

.module-card h4 {
    margin-bottom: 0.3rem;
}

.module-card p {
    color: var(--muted);
    font-size: 0.92rem;
}

.hidden {
    display: none !important;
}

@media (max-width: 720px) {
    nav a {
        display: none;
    }
}