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

:root {
    --bg1: #0f172a;
    --bg2: #1e293b;
    --card: rgba(255,255,255,0.06);
    --text: #e2e8f0;
    --muted: #94a3b8;
    --primary1: #38bdf8;
    --primary2: #818cf8;
}

html, body {
    height: 100%;
}

body {
    font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: linear-gradient(135deg, var(--bg1) 0%, var(--bg2) 50%, #0b1022 100%);
    color: var(--text);
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-container {
    width: min(680px, 100%);
}

.login-card {
    background: var(--card);
    border-radius: 16px;
    padding: 28px 22px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.4);
    backdrop-filter: blur(6px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    animation: fadeInUp 700ms ease both;
}

.avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 10px 30px rgba(0,0,0,0.35);
    animation: float 3.5s ease-in-out infinite;
}

h1 { font-size: 24px; font-weight: 800; }
.subtitle { color: var(--muted); font-size: 14px; }

form { width: 100%; margin-top: 6px; display: grid; gap: 12px; }

.form-field { display: grid; gap: 6px; }
.form-field label { font-weight: 600; font-size: 14px; }
.form-field input {
    width: 100%;
    height: 48px;
    padding: 0 14px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(15, 23, 42, 0.85);
    color: var(--text);
    outline: none;
    transition: box-shadow .2s, border-color .2s;
}
.form-field input:focus {
    border-color: rgba(129, 140, 248, 0.7);
    box-shadow: 0 0 0 4px rgba(129, 140, 248, 0.25);
}
.error { color: #fda4af; font-size: 12px; min-height: 16px; }

#loginBtn {
    margin-top: 6px;
    height: 48px;
    border-radius: 12px;
    border: none;
    background: linear-gradient(135deg, var(--primary1) 0%, var(--primary2) 100%);
    color: #0b1224;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 12px 30px rgba(38,148,255,0.35);
    transition: transform .08s ease, filter .2s ease;
}
#loginBtn:active { transform: translateY(1px); }
#loginBtn:hover { filter: brightness(1.05); }

.meta { color: var(--muted); font-size: 12px; text-align: center; margin-top: 4px; }

@media (max-width: 520px) {
    .login-card { padding: 22px 16px; }
    h1 { font-size: 20px; }
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
    100% { transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}