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

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #eef2ff;
    --text: #111827;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --bg: #f9fafb;
    --danger: #ef4444;
    --danger-bg: #fef2f2;
    --white: #ffffff;
}

html,
body {
    height: 100%;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    color: var(--text);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-font-smoothing: antialiased;
}

.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}

.login-wrapper::before,
.login-wrapper::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    pointer-events: none;
}

.login-wrapper::before {
    width: 420px;
    height: 420px;
    top: -120px;
    left: -120px;
}

.login-wrapper::after {
    width: 520px;
    height: 520px;
    bottom: -180px;
    right: -160px;
}

.login-card {
    position: relative;
    width: 100%;
    max-width: 440px;
    background: var(--white);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.35);
    animation: fadeUp 0.5s ease;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}

.login-brand {
    text-align: center;
    margin-bottom: 2rem;
}

.brand-mark {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    box-shadow: 0 10px 25px -8px rgba(79, 70, 229, 0.6);
}

.login-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
}

.login-brand p {
    color: var(--text-muted);
    font-size: 0.925rem;
    margin-top: 0.25rem;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 10px;
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
}

.alert-error {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid #fecaca;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.825rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 0.375rem;
}

.input-with-icon {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-icon > svg {
    position: absolute;
    left: 0.875rem;
    width: 18px;
    height: 18px;
    color: var(--text-muted);
    pointer-events: none;
}

.input-with-icon input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--text);
    background: var(--white);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.input-with-icon input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

.input-with-icon input::placeholder {
    color: #9ca3af;
}

.toggle-password {
    position: absolute;
    right: 0.75rem;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.toggle-password svg {
    width: 18px;
    height: 18px;
}

.toggle-password:hover {
    color: var(--primary);
}

.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text-muted);
}

.checkbox input {
    accent-color: var(--primary);
    width: 16px;
    height: 16px;
}

.btn-login {
    margin-top: 0.25rem;
    width: 100%;
    padding: 0.875rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 0.975rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: transform 0.1s, box-shadow 0.15s;
    box-shadow: 0 8px 20px -6px rgba(79, 70, 229, 0.55);
}

.btn-login svg {
    width: 16px;
    height: 16px;
    transition: transform 0.2s;
}

.btn-login:hover {
    box-shadow: 0 12px 28px -6px rgba(79, 70, 229, 0.7);
}

.btn-login:hover svg {
    transform: translateX(3px);
}

.btn-login:active {
    transform: translateY(1px);
}

.btn-login[disabled] {
    opacity: 0.7;
    cursor: not-allowed;
}

.login-footer {
    margin-top: 1.5rem;
    text-align: center;
    color: var(--text-muted);
}

@media (max-width: 480px) {
    .login-card {
        padding: 2rem 1.5rem;
        border-radius: 16px;
    }
}