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

:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --error-color: #ef4444;
    --error-bg: #fef2f2;
    --success-color: #10b981;
    --success-bg: #f0fdf4;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --background: #f9fafb;
    --card-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo-icon {
    width: 64px;
    height: 64px;
    color: var(--primary-color);
    margin-bottom: 16px;
}
.alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 24px;
    font-size: 14px;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

.alert-success {
    background-color: var(--success-bg);
    color: var(--success-color);
    border: 1px solid #bbf7d0;
}

.alert svg {
    flex-shrink: 0;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}
.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: white;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    padding: 40px;
    animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.login-header p {
    font-size: 14px;
    color: var(--text-secondary);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.login-button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

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

.login-button svg {
    transition: transform 0.2s ease;
}

.login-button:hover svg {
    transform: translateX(4px);
}

.login-footer {
    margin-top: 32px;
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.login-footer p {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Responsive design */
@media (max-width: 480px) {
    .login-card {
        padding: 28px 24px;
    }

    .login-header h1 {
        font-size: 24px;
    }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    .login-card {
        background: #1f2937;
    }
}

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

.input-icon {
    position: absolute;
    left: 14px;
    color: var(--text-secondary);
    pointer-events: none;
}

.input-wrapper input {
    width: 100%;
    padding: 12px 14px 12px 44px;
    font-size: 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    outline: none;
    transition: all 0.2s ease;
    background-color: white;
    color: var(--text-primary);
}

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

.input-wrapper input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.input-wrapper input:focus + .input-icon {
    color: var(--primary-color);
}

.footer {
    margin-top: 32px;
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.footer p {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Responsive design */
@media (max-width: 480px) {
    .logo-icon {
        width: 52px;
        height: 52px;
    }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --background: #111827;
        --border-color: #374151;
    }

    .input-wrapper input {
        background-color: #111827;
        color: #f9fafb;
    }

    .input-wrapper input::placeholder {
        color: #6b7280;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}