:root {
    --bg-gradient: radial-gradient(at 50% 50%, #ffffff 0%, #e0f2fe 100%);
    --primary: #ffa500;
    --primary-hover: #ad802b;
    --card-bg: rgba(255, 255, 255, 0.8);
    --input-bg: #ffffff;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --radius-lg: 2rem;
    --radius-md: 1rem;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-font-smoothing: antialiased;
}

body {
    background: var(--bg-gradient);
    min-height: 100dvh;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    box-shadow: 
        0 10px 15px -3px rgba(0, 0, 0, 0.02),
        0 30px 60px -12px rgba(2, 132, 199, 0.08);
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

.header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -1.5px;
}

.header h1 span {
    color: var(--primary);
}

.input-group {
    margin-bottom: 16px;
}

input {
    width: 100%;
    padding: 18px 20px;
    background: var(--input-bg);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: var(--radius-md);
    color: var(--text-dark);
    font-size: 1rem;
    outline: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: text !important;
    caret-color: var(--primary);
}

input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.08);
    transform: translateY(-2px);
}

.btn-submit {
    width: 100%;
    padding: 18px;
    margin-top: 12px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 10px 15px -3px rgba(2, 132, 199, 0.3);
}

.btn-submit:active {
    transform: scale(0.96);
}

.link-row {
    display: flex;
    justify-content: space-between;
    margin-top: 24px;
}

.link-row a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
}

.link-row a:last-child {
    color: var(--primary);
}

@media (max-width: 480px) {
    body {
        padding: 16px;
        align-items: center;
    }

    .login-card {
        padding: 40px 24px;
        border-radius: 2rem;
        max-width: 100%; 
    }

    .header h1 {
        font-size: 1.8rem;
    }

    input, .btn-submit {
        padding: 16px;
    }
}