:root {
    --bg: #0f172a;
    --bg-soft: #111827;
    --card: rgba(17, 24, 39, 0.88);
    --card-border: rgba(148, 163, 184, 0.18);
    --text: #e5e7eb;
    --muted: #9ca3af;
    --blue: #60a5fa;
    --blue-strong: #2563eb;
    --blue-soft: rgba(96, 165, 250, 0.16);
    --white: #ffffff;
    --shadow: 0 30px 70px rgba(15, 23, 42, 0.55);
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --transition: 180ms ease;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    color-scheme: dark;
}

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background:
        radial-gradient(circle at top, rgba(96, 165, 250, 0.2), transparent 32%),
        linear-gradient(135deg, #020817 0%, #0f172a 100%);
}

img {
    display: block;
    max-width: 100%;
}

button,
input {
    font: inherit;
}

.login-container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
}

.login-box {
    position: relative;
    width: min(100%, 430px);
    padding: 30px 28px 24px;
    border-radius: 28px;
    border: 1px solid var(--card-border);
    background: linear-gradient(180deg, rgba(17, 24, 39, 0.96), rgba(15, 23, 42, 0.9));
    box-shadow: var(--shadow);
    backdrop-filter: blur(14px);
}

.login-box::before {
    content: "";
    position: absolute;
    inset: 1px;
    border-radius: 27px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
    pointer-events: none;
}

.brand,
.header,
.login-form,
.divider,
.links,
.demo-notice {
    position: relative;
    z-index: 1;
}

.brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 22px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #f3f4f6;
}

.logo {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    box-shadow: 0 10px 22px rgba(37, 99, 235, 0.25);
}

.header {
    text-align: center;
    margin-bottom: 24px;
}

.eyebrow {
    margin: 0 0 8px;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--blue);
    font-weight: 700;
}

h1 {
    margin: 0;
    font-size: clamp(2rem, 4vw, 2.4rem);
    line-height: 1.1;
    font-weight: 700;
    color: var(--white);
}

.subtitle {
    margin: 10px 0 0;
    color: var(--muted);
    font-size: 0.98rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: #dbeafe;
    font-size: 0.9rem;
    font-weight: 600;
}

.field span {
    padding-left: 2px;
}

.field input {
    width: 100%;
    border: 1px solid rgba(148, 163, 184, 0.2);
    background: rgba(15, 23, 42, 0.88);
    color: var(--white);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.field input::placeholder {
    color: var(--muted);
}

.field input:hover {
    border-color: rgba(96, 165, 250, 0.5);
}

.field input:focus {
    outline: none;
    border-color: rgba(96, 165, 250, 0.9);
    box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.18);
}

.input-wrap {
    position: relative;
}

.input-wrap input {
    padding-right: 76px;
}

.toggle-password {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: auto;
    min-width: 48px;
    padding: 7px 10px;
    border: none;
    border-radius: 10px;
    background: rgba(96, 165, 250, 0.12);
    color: #dbeafe;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
}

.toggle-password:hover {
    background: rgba(96, 165, 250, 0.2);
}

.toggle-password:active {
    transform: translateY(-50%) scale(0.98);
}

.options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    font-size: 0.82rem;
    color: var(--muted);
}

.remember-me {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.remember-me input {
    accent-color: var(--blue);
    width: 15px;
    height: 15px;
}

.options a,
.links a {
    color: #bfdbfe;
    text-decoration: none;
    transition: color var(--transition);
}

.options a:hover,
.links a:hover {
    color: var(--white);
}

.primary-button,
.secondary-button {
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border: none;
    border-radius: 14px;
    padding: 14px 16px;
    font-weight: 700;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

.primary-button {
    background: linear-gradient(135deg, var(--blue), var(--blue-strong));
    color: var(--white);
    box-shadow: 0 16px 30px rgba(37, 99, 235, 0.28);
}

.primary-button:hover,
.secondary-button:hover {
    transform: translateY(-1px);
    filter: brightness(1.04);
}

.primary-button:active,
.secondary-button:active {
    transform: translateY(0);
}

.secondary-button {
    background: rgba(148, 163, 184, 0.08);
    border: 1px solid rgba(148, 163, 184, 0.22);
    color: var(--text);
    margin-top: 10px;
}

.divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 22px 0 8px;
    color: var(--muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.divider::before,
.divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: rgba(148, 163, 184, 0.18);
}

.demo-notice {
    margin: 22px 0 0;
    text-align: center;
    color: var(--muted);
    font-size: 0.8rem;
}

.links {
    margin-top: 18px;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.8rem;
}

@media (max-width: 480px) {
    .login-box {
        padding: 24px 20px 18px;
        border-radius: 22px;
    }

    .options {
        flex-direction: column;
        align-items: flex-start;
    }

    .links {
        gap: 10px 14px;
    }
}