*, *::before, *::after { box-sizing: border-box; }

html, body {
    height: 100%;
    margin: 0;
}

.login-body {
    min-height: 100vh;
    background: #0d1117;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', system-ui, sans-serif;
    overflow: hidden;
    position: relative;
}

#login-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.login-wrapper {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 400px;
    padding: 1rem;
}

.login-box {
    background: rgba(13, 17, 23, 0.75);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border: 1px solid rgba(99, 179, 237, 0.15);
    border-radius: 20px;
    padding: 2.5rem 2rem 2rem;
    box-shadow:
        0 0 0 1px rgba(99, 179, 237, 0.05),
        0 24px 64px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255,255,255,0.04);
}

/* --- Logo --- */
.login-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-mark {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    filter: drop-shadow(0 0 12px rgba(99,179,237,0.4));
}

.logo-mark svg {
    width: 100%;
    height: 100%;
}

.login-logo h1 {
    color: #e6edf3;
    font-size: 1.45rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    margin: 0 0 0.2rem;
}

.login-subtitle {
    color: rgba(255,255,255,0.35);
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin: 0;
}

/* --- Form --- */
.form-floating label {
    color: rgba(255,255,255,0.4);
    font-size: 0.9rem;
}

.form-floating .form-control {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    color: #e6edf3;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.form-floating .form-control:focus {
    background: rgba(99,179,237,0.06);
    border-color: rgba(99,179,237,0.5);
    box-shadow: 0 0 0 3px rgba(99,179,237,0.12);
    color: #e6edf3;
    outline: none;
}

.form-floating .form-control::placeholder { color: transparent; }

/* fix autofill dark bg */
.form-floating .form-control:-webkit-autofill,
.form-floating .form-control:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0 1000px #111827 inset !important;
    -webkit-text-fill-color: #e6edf3 !important;
    caret-color: #e6edf3;
    border-color: rgba(99,179,237,0.5);
}

.btn-login {
    padding: 0.75rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 12px;
    background: linear-gradient(135deg, #3a7bd5 0%, #6e44b8 100%);
    border: none;
    letter-spacing: 0.03em;
    color: #fff;
    transition: opacity 0.15s, transform 0.12s, box-shadow 0.15s;
    box-shadow: 0 4px 20px rgba(58,123,213,0.35);
}

.btn-login:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(58,123,213,0.45);
}

.btn-login:active {
    transform: translateY(0);
}

.alert-danger {
    background: rgba(220,53,69,0.1);
    border: 1px solid rgba(220,53,69,0.25);
    color: #ff8091;
    border-radius: 10px;
    font-size: 0.88rem;
    padding: 0.65rem 1rem;
}