/* =====================================================================
   NHEC 2026 Portal — Shared foundation styles
   Loaded by BOTH the public website (index.php) and the admin
   portal (admin.php): design tokens, top toggle bar, auth modal,
   shared button styles and the site footer.
   ===================================================================== */

:root {
    --primary-teal: #1cb09a;
    --dark-teal: #0c382b;
    --background-mint: #e8f5f1;
    --text-dark: #2d3e3a;
    --white: #ffffff;
    --gray-light: #f4f7f6;
    --border-color: rgba(28, 176, 154, 0.2);
    --transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--white);
    color: var(--text-dark);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Mode Switcher Banner */
.portal-toggle-bar {
    background-color: #111;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--primary-teal);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.portal-brand {
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
}
.portal-brand span { color: var(--primary-teal); }
.toggle-btn {
    background: transparent;
    border: 1px solid var(--primary-teal);
    color: var(--primary-teal);
    padding: 5px 14px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}
.toggle-btn.active {
    background-color: var(--primary-teal);
    color: white;
}

/* ==================== SECURITY AUTHENTICATION MODAL ==================== */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(12, 56, 43, 0.9);
    backdrop-filter: blur(4px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}
.login-card {
    background: var(--white);
    padding: 40px;
    border-radius: 8px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.25);
    border-top: 4px solid var(--primary-teal);
}
.login-card h3 { margin: 0 0 10px 0; color: var(--dark-teal); font-size: 1.5rem; }
.login-card p { color: #666; font-size: 0.85rem; margin-bottom: 20px; }
.login-err { color: #c92a2a; background: #ffe3e3; padding: 10px; border-radius: 4px; font-size: 0.85rem; margin-bottom: 15px; display: none; }

/* Shared flat action button (auth modal + registration form) */
.btn-send-flat {
    width: 100%; background-color: var(--primary-teal); color: var(--white); border: none; padding: 14px;
    font-weight: 700; font-size: 0.9rem; text-transform: uppercase; cursor: pointer; margin-top: 15px;
    letter-spacing: 0.5px; transition: background 0.3s ease;
}
.btn-send-flat:hover { background-color: var(--dark-teal); }
.btn-send-flat:disabled { opacity: 0.6; cursor: not-allowed; }

footer { background-color: #111; color: #888; text-align: center; padding: 40px 20px; font-size: 0.8rem; }
footer strong { color: #fff; }

/* ==================== RESPONSIVE — SHARED CHROME ====================
   Desktop layout above 768px is untouched; everything below only ever
   applies on tablets and phones.
   ==================================================================== */

@media (max-width: 768px) {
    /* Nothing on the page may push the viewport sideways. */
    html, body { overflow-x: hidden; }

    /* The toggle bar stacks, so it stops being sticky — a two-row sticky
       header would eat a fifth of a phone screen. */
    .portal-toggle-bar {
        position: static;
        flex-direction: column;
        gap: 10px;
        padding: 12px 15px;
    }
    .portal-brand { font-size: 0.8rem; text-align: center; }

    /* The button group is the toggle bar's second child. */
    .portal-toggle-bar > div {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
        width: 100%;
    }
    .toggle-btn { font-size: 0.7rem; padding: 7px 12px; }

    /* Auth modal: never let the card touch the screen edges. */
    .modal-overlay { padding: 20px; box-sizing: border-box; }
    .login-card { padding: 28px 22px; }
    .login-card h3 { font-size: 1.25rem; }

    footer { padding: 30px 18px; }
}

@media (max-width: 480px) {
    .login-card { padding: 24px 18px; }
    /* Side-by-side Cancel / Verify buttons get cramped below ~360px. */
    .btn-send-flat { padding: 12px; font-size: 0.8rem; }
}