/* ============================================================
   LOGIN - PagoConfirmado
   Dark blue starfield + glass card
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Inter', sans-serif;
    background: #002035;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

/* ---- Starfield on body ---- */
body::before,
body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

/* Layer 1 - distant stars */
body::before {
    background-image:
        radial-gradient(2px   2px   at  50px  60px,  #fff 50%, transparent 50%),
        radial-gradient(1.5px 1.5px at 200px 140px,  rgba(255,255,255,0.7) 50%, transparent 50%),
        radial-gradient(3px   3px   at 350px  40px,  #fff 50%, transparent 50%),
        radial-gradient(1.5px 1.5px at 100px 250px,  rgba(255,255,255,0.6) 50%, transparent 50%),
        radial-gradient(2.5px 2.5px at 450px 320px,  rgba(255,255,255,0.8) 50%, transparent 50%),
        radial-gradient(3px   3px   at 250px 430px,  #fff 50%, transparent 50%),
        radial-gradient(2px   2px   at  70px 520px,  rgba(255,255,255,0.6) 50%, transparent 50%),
        radial-gradient(2.5px 2.5px at 400px 580px,  rgba(255,255,255,0.7) 50%, transparent 50%),
        radial-gradient(1.5px 1.5px at 150px 680px,  rgba(255,255,255,0.5) 50%, transparent 50%),
        radial-gradient(3px   3px   at 500px 750px,  #fff 50%, transparent 50%),
        radial-gradient(2px   2px   at 300px 850px,  rgba(255,255,255,0.6) 50%, transparent 50%),
        radial-gradient(3.5px 3.5px at 550px 180px,  #fff 50%, transparent 50%),
        radial-gradient(2px   2px   at  20px 380px,  rgba(255,255,255,0.7) 50%, transparent 50%),
        radial-gradient(1.5px 1.5px at 480px 460px,  rgba(255,255,255,0.6) 50%, transparent 50%),
        radial-gradient(2.5px 2.5px at 180px 900px,  #fff 50%, transparent 50%);
    background-size: 600px 1000px;
    animation: starDriftSlow 120s linear infinite;
}

/* Layer 2 - closer stars (bigger, blueish) */
body::after {
    background-image:
        radial-gradient(3px   3px   at 120px 100px,  rgba(160,210,255,0.9) 50%, transparent 50%),
        radial-gradient(3.5px 3.5px at 380px 260px,  rgba(160,210,255,0.8) 50%, transparent 50%),
        radial-gradient(3px   3px   at  60px 400px,  rgba(180,220,255,0.85) 50%, transparent 50%),
        radial-gradient(4px   4px   at 300px 560px,  rgba(160,210,255,0.8) 50%, transparent 50%),
        radial-gradient(3px   3px   at 200px 720px,  rgba(180,220,255,0.9) 50%, transparent 50%),
        radial-gradient(4px   4px   at 500px  80px,  rgba(160,210,255,0.7) 50%, transparent 50%),
        radial-gradient(3.5px 3.5px at  30px 200px,  rgba(180,220,255,0.8) 50%, transparent 50%),
        radial-gradient(4px   4px   at 420px 830px,  rgba(160,210,255,0.75) 50%, transparent 50%);
    background-size: 600px 1000px;
    animation: starDriftClose 90s linear infinite;
}

@keyframes starDriftSlow {
    from { background-position: 0 0; }
    to   { background-position: 0 1000px; }
}
@keyframes starDriftClose {
    from { background-position: 0 0; }
    to   { background-position: 0 -1000px; }
}

/* ---- Login wrapper (above stars) ---- */
.login-wrapper {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
    padding: 24px;
    width: 100%;
    max-width: 420px;
}

/* ---- Brand ---- */
.login-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-icon {
    width: 48px;
    height: 48px;
    background: #3b82f6;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4em;
    color: #fff;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

.brand-name {
    font-size: 1.6em;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.5px;
}

/* ---- Card ---- */
.login-container {
    width: 100%;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 20px;
    padding: 40px 32px;
}

h1 {
    text-align: center;
    font-size: 2em;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}

.login-subtitle {
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95em;
    margin-bottom: 28px;
}

/* ---- Form ---- */
form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 0 16px;
    transition: border-color 0.3s, background 0.3s;
}

.input-group:focus-within {
    border-color: #3b82f6;
    background: rgba(59, 130, 246, 0.08);
}

.input-group i {
    color: rgba(255, 255, 255, 0.4);
    font-size: 1em;
    width: 20px;
    text-align: center;
    transition: color 0.3s;
}

.input-group:focus-within i {
    color: #3b82f6;
}

.input-group input {
    flex: 1;
    border: none;
    background: transparent;
    color: #fff;
    font-family: 'Inter', sans-serif;
    font-size: 1em;
    padding: 14px 0;
    outline: none;
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.35);
}

button[type="submit"] {
    background: linear-gradient(135deg, #1a56db, #3b82f6);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 14px;
    font-family: 'Inter', sans-serif;
    font-size: 1.05em;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.3s, opacity 0.3s;
    margin-top: 8px;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.35);
}

button[type="submit"]:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 28px rgba(59, 130, 246, 0.5);
}

button[type="submit"]:active {
    transform: translateY(0);
}

button[type="submit"]:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ---- Error message ---- */
#loginMessage {
    margin-top: 16px;
    color: #f87171;
    text-align: center;
    font-size: 0.9em;
    min-height: 1.2em;
}

/* ---- Responsive ---- */
@media (max-width: 480px) {
    .login-wrapper { padding: 20px 16px; gap: 24px; }
    .login-container { padding: 32px 20px; }
    h1 { font-size: 1.7em; }
    .brand-icon { width: 42px; height: 42px; font-size: 1.2em; }
    .brand-name { font-size: 1.35em; }
}