:root {
    --smart-navy: #071a2b;
    --smart-blue: #0d3b66;
    --smart-accent: #1677a6;
    --smart-light: #f4f7f9;
    --smart-white: #ffffff;
    --smart-text: #17212b;
    --smart-muted: #667684;
    --smart-border: #d8e0e6;
    --smart-danger: #a92d35;
    --smart-radius: 12px;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--smart-text);
    background: var(--smart-light);
    line-height: 1.6;
}

main {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

main > section {
    width: 100%;
    max-width: 520px;
    padding: 48px;
    background: var(--smart-white);
    border: 1px solid var(--smart-border);
    border-radius: var(--smart-radius);
    box-shadow: 0 18px 50px rgba(7, 26, 43, 0.10);
}

header {
    margin-bottom: 34px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--smart-border);
}

header > div {
    font-size: 30px;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--smart-navy);
}

header p {
    margin: 4px 0 0;
    font-size: 14px;
    color: var(--smart-muted);
}

h1 {
    margin: 0 0 8px;
    font-size: 28px;
    line-height: 1.25;
    color: var(--smart-navy);
}

h1 + p {
    margin: 0 0 30px;
    color: var(--smart-muted);
}

form > div {
    margin-bottom: 22px;
}

label {
    display: block;
    margin-bottom: 7px;
    font-size: 14px;
    font-weight: 600;
    color: var(--smart-text);
}

input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 13px 14px;
    font: inherit;
    color: var(--smart-text);
    background: var(--smart-white);
    border: 1px solid var(--smart-border);
    border-radius: 8px;
    outline: none;
}

input[type="email"]:focus,
input[type="password"]:focus {
    border-color: var(--smart-accent);
    box-shadow: 0 0 0 3px rgba(22, 119, 166, 0.12);
}

button[type="submit"] {
    width: 100%;
    padding: 14px 20px;
    font: inherit;
    font-weight: 700;
    color: var(--smart-white);
    background: var(--smart-blue);
    border: 0;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

button[type="submit"]:hover {
    background: var(--smart-navy);
}

button[type="submit"]:focus-visible {
    outline: 3px solid rgba(22, 119, 166, 0.30);
    outline-offset: 3px;
}

.login-errors {
    margin: 0 0 24px;
    padding: 14px 16px;
    color: var(--smart-danger);
    background: #fff6f6;
    border: 1px solid #e7b9bd;
    border-radius: 8px;
}

.login-errors p {
    margin: 0;
}

footer {
    margin-top: 30px;
    padding-top: 22px;
    border-top: 1px solid var(--smart-border);
    text-align: center;
}

footer p {
    margin: 6px 0;
    font-size: 13px;
    color: var(--smart-muted);
}

footer a {
    color: var(--smart-blue);
    font-weight: 600;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {
    main {
        padding: 20px 14px;
        align-items: flex-start;
    }

    main > section {
        margin-top: 20px;
        padding: 32px 24px;
    }

    header > div {
        font-size: 26px;
    }

    h1 {
        font-size: 25px;
    }
}

/* =========================================================
   SMART NANO BIOTECH — PREMIUM LOGIN PORTAL
   VISUAL DESIGN ONLY
   PHP / DATABASE / SESSION / AUTHENTICATION UNTOUCHED
   ========================================================= */

/* ---------- GLOBAL ---------- */

html,
body {
    min-height: 100%;
}

body {
    margin: 0 !important;
    background:
        radial-gradient(circle at 8% 50%, rgba(37, 99, 235, 0.16), transparent 30%),
        radial-gradient(circle at 92% 50%, rgba(14, 165, 233, 0.12), transparent 30%),
        linear-gradient(135deg, #061a38 0%, #0b2f5f 48%, #071b38 100%) !important;
    color: #102f57 !important;
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif !important;
    overflow-x: hidden;
}

/* ---------- HEADER / SMART BRAND ---------- */

header {
    position: relative !important;
    z-index: 10;
    min-height: 76px !important;
    display: flex !important;
    align-items: center !important;
    padding: 0 42px !important;
    background: linear-gradient(90deg, #071d3c, #0c3568, #124d82) !important;
    border-bottom: 1px solid rgba(255,255,255,.14) !important;
    box-shadow: 0 8px 30px rgba(0,0,0,.18) !important;
}

header > div {
    display: flex !important;
    align-items: center !important;
    gap: 14px !important;
}

/* Use the existing SMART logo */
header::before {
    content: "";
    display: block;
    width: 48px;
    height: 48px;
    flex: 0 0 48px;
    background-image: url("/images/smart-logo.png");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    filter: drop-shadow(0 3px 8px rgba(0,0,0,.35));
}

header h1,
header h2,
header .portal-title,
header .portal-brand {
    color: #ffffff !important;
}

/* ---------- MAIN LOGIN AREA ---------- */

main {
    position: relative !important;
    min-height: calc(100vh - 76px) !important;
    max-width: 1280px !important;
    margin: 0 auto !important;
    padding: 55px 30px 70px !important;
    box-sizing: border-box !important;
}

/* Scientific background treatment — left */

main::before {
    content: "";
    position: fixed;
    left: -90px;
    top: 150px;
    width: 430px;
    height: 620px;
    background:
        linear-gradient(90deg, rgba(5,27,57,.92), rgba(5,27,57,.45), transparent),
        url("/portal/auth/scientist-microscope.png");
    background-size: cover;
    background-position: center;
    opacity: .18;
    pointer-events: none;
    z-index: 0;
    border-radius: 0 120px 120px 0;
}

/* Scientific background treatment — right */

main::after {
    content: "";
    position: fixed;
    right: -90px;
    top: 150px;
    width: 430px;
    height: 620px;
    background:
        linear-gradient(270deg, rgba(5,27,57,.92), rgba(5,27,57,.42), transparent),
        url("/portal/auth/scientist-microscope.png");
    background-size: cover;
    background-position: center;
    opacity: .16;
    pointer-events: none;
    z-index: 0;
    border-radius: 120px 0 0 120px;
}

/* ---------- LOGIN CONTENT ---------- */

main > section,
main > div,
main > form {
    position: relative;
    z-index: 2;
}

/* Keep the login card centered and premium */

main > section {
    max-width: 560px !important;
    margin: 0 auto !important;
}

/* ---------- BRAND / INTRO ---------- */

.portal-brand {
    text-align: center !important;
    margin-bottom: 12px !important;
}

.portal-brand img {
    width: 82px !important;
    height: 82px !important;
    object-fit: contain !important;
    margin: 0 auto 14px !important;
    display: block !important;
    filter: drop-shadow(0 8px 18px rgba(0,0,0,.28));
}

.portal-title {
    color: #ffffff !important;
    font-size: 30px !important;
    font-weight: 800 !important;
    letter-spacing: -.5px !important;
}

.portal-description {
    color: rgba(255,255,255,.82) !important;
    font-size: 15px !important;
    line-height: 1.6 !important;
    max-width: 520px !important;
    margin: 8px auto 25px !important;
}

/* ---------- LOGIN CARD ---------- */

form.login-form {
    position: relative !important;
    max-width: 520px !important;
    margin: 0 auto !important;
    padding: 34px !important;
    background: rgba(255,255,255,.98) !important;
    border: 1px solid rgba(255,255,255,.8) !important;
    border-radius: 22px !important;
    box-shadow:
        0 30px 70px rgba(0,0,0,.30),
        0 8px 25px rgba(0,0,0,.15) !important;
    box-sizing: border-box !important;
}

/* subtle blue premium line */

form.login-form::before {
    content: "";
    position: absolute;
    top: 0;
    left: 34px;
    right: 34px;
    height: 4px;
    border-radius: 0 0 8px 8px;
    background: linear-gradient(90deg, #1769e0, #38bdf8, #1769e0);
}

/* ---------- LABELS ---------- */

form.login-form label {
    display: block !important;
    margin: 18px 0 7px !important;
    color: #102f57 !important;
    font-size: 14px !important;
    font-weight: 700 !important;
}

/* ---------- INPUTS ---------- */

form.login-form input[type="email"],
form.login-form input[type="text"],
form.login-form input[type="password"] {
    width: 100% !important;
    height: 50px !important;
    padding: 0 15px !important;
    box-sizing: border-box !important;
    border: 1px solid #cbd8e8 !important;
    border-radius: 10px !important;
    background: #f8fbff !important;
    color: #102f57 !important;
    font-size: 15px !important;
    outline: none !important;
    transition: border-color .2s ease, box-shadow .2s ease, background .2s ease !important;
}

form.login-form input[type="email"]:focus,
form.login-form input[type="text"]:focus,
form.login-form input[type="password"]:focus {
    border-color: #2474df !important;
    background: #ffffff !important;
    box-shadow: 0 0 0 4px rgba(36,116,223,.12) !important;
}

/* ---------- SUBMIT BUTTON ---------- */

form.login-form input[type="submit"],
form.login-form button[type="submit"] {
    width: 100% !important;
    min-height: 52px !important;
    margin-top: 24px !important;
    border: 0 !important;
    border-radius: 10px !important;
    background: linear-gradient(135deg, #1769e0, #0d4fa8) !important;
    color: #ffffff !important;
    font-size: 15px !important;
    font-weight: 750 !important;
    cursor: pointer !important;
    box-shadow: 0 10px 22px rgba(23,105,224,.25) !important;
    transition: transform .18s ease, box-shadow .18s ease !important;
}

form.login-form input[type="submit"]:hover,
form.login-form button[type="submit"]:hover {
    transform: translateY(-1px) !important;
    box-shadow: 0 14px 28px rgba(23,105,224,.34) !important;
}

/* ---------- LINKS ---------- */

form.login-form a,
.portal-footer a {
    color: #145bb5 !important;
    font-weight: 650 !important;
    text-decoration: none !important;
}

form.login-form a:hover,
.portal-footer a:hover {
    text-decoration: underline !important;
}

/* ---------- ERROR MESSAGE ---------- */

.login-errors {
    margin: 0 auto 18px !important;
    max-width: 520px !important;
    padding: 13px 16px !important;
    box-sizing: border-box !important;
    border-radius: 10px !important;
    border: 1px solid #f0b7bd !important;
    background: #fff5f6 !important;
    color: #a51d2d !important;
}

/* ---------- QUOTE / SUPPORT CONTENT ---------- */

.portal-quote {
    max-width: 520px !important;
    margin: 20px auto 0 !important;
    padding: 18px 22px !important;
    box-sizing: border-box !important;
    border: 1px solid rgba(255,255,255,.20) !important;
    border-radius: 14px !important;
    background: rgba(255,255,255,.08) !important;
    color: rgba(255,255,255,.86) !important;
    line-height: 1.55 !important;
}

/* ---------- FOOTER ---------- */

.portal-footer,
footer {
    position: relative !important;
    z-index: 5 !important;
    color: rgba(255,255,255,.75) !important;
}

footer {
    background: #061a38 !important;
    border-top: 1px solid rgba(255,255,255,.12) !important;
}

/* ---------- MOBILE ---------- */

@media (max-width: 760px) {

    header {
        min-height: 68px !important;
        padding: 0 18px !important;
    }

    header::before {
        width: 40px;
        height: 40px;
        flex-basis: 40px;
    }

    main {
        padding: 35px 16px 50px !important;
    }

    main::before,
    main::after {
        opacity: .08;
        width: 250px;
    }

    form.login-form {
        padding: 25px 20px !important;
        border-radius: 17px !important;
    }

    .portal-title {
        font-size: 25px !important;
    }
}


/* ===== SMART Login Mobile Safety: iPhone / Android ===== */
html {
    -webkit-text-size-adjust: 100%;
}

body {
    max-width: 100%;
    overflow-x: hidden;
}

img,
svg {
    max-width: 100%;
    height: auto;
}

@media (max-width: 760px) {
    main,
    main > section,
    form.login-form {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }

    form.login-form input[type="email"],
    form.login-form input[type="text"],
    form.login-form input[type="password"] {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        font-size: 16px !important;
    }

    form.login-form input[type="submit"],
    form.login-form button[type="submit"] {
        width: 100% !important;
        min-height: 48px !important;
        touch-action: manipulation;
    }

    form.login-form a {
        display: inline-flex;
        align-items: center;
        min-height: 44px;
    }
}

@media (max-width: 480px) {
    main {
        padding-left: 12px !important;
        padding-right: 12px !important;
    }

    form.login-form {
        padding: 20px 16px !important;
        border-radius: 14px !important;
    }

    .portal-title {
        font-size: 22px !important;
        overflow-wrap: anywhere;
    }
}