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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
}

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 50%, #bbf7d0 100%);
}

.login-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: 1;
}

.background-shapes {
    position: relative;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: #4ade80;
    top: -150px;
    left: -150px;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: #22c55e;
    bottom: -100px;
    right: -100px;
    animation-delay: 2s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: #16a34a;
    top: 50%;
    right: 10%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 24px;
    padding: 40px;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    position: relative;
    z-index: 2;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.logo-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.logo {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.system-title {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.system-subtitle {
    color: #6b7280;
    font-size: 0.875rem;
    font-weight: 500;
    margin: 0;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 8px;
}

.label-icon {
    width: 16px;
    height: 16px;
    color: #4ade80;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.2s ease;
    background: #ffffff;
}

    .form-input:focus {
        outline: none;
        border-color: #4ade80;
        box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.1);
    }

    .form-input.error {
        border-color: #ef4444;
        box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
    }

.password-input-container {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: #6b7280;
    width: 20px;
    height: 20px;
}

    .password-toggle:hover {
        color: #4ade80;
    }

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.875rem;
    color: #6b7280;
    position: relative;
    padding-left: 24px;
}

    .checkbox-container input[type="checkbox"] {
        position: absolute;
        opacity: 0;
        cursor: pointer;
    }

.checkmark {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 16px;
    width: 16px;
    background-color: #ffffff;
    border: 2px solid #e5e7eb;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.checkbox-container input:checked ~ .checkmark {
    background-color: #4ade80;
    border-color: #4ade80;
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 4px;
    top: 1px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.forgot-password-link {
    color: #4ade80;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

    .forgot-password-link:hover {
        color: #22c55e;
        text-decoration: underline;
    }

.login-button {
    width: 100%;
    background: linear-gradient(135deg, #4ade80, #22c55e);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 48px;
}

    .login-button:hover:not(:disabled) {
        background: linear-gradient(135deg, #22c55e, #16a34a);
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(74, 222, 128, 0.4);
    }

    .login-button:disabled {
        opacity: 0.7;
        cursor: not-allowed;
        transform: none;
    }

.button-icon {
    width: 20px;
    height: 20px;
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.login-footer {
    margin-top: 32px;
    text-align: center;
    space-y: 16px;
}

.footer-text {
    color: #6b7280;
    font-size: 0.875rem;
    margin-bottom: 16px;
}

.register-link {
    color: #4ade80;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

    .register-link:hover {
        color: #22c55e;
        text-decoration: underline;
    }

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.footer-link {
    color: #9ca3af;
    text-decoration: none;
    font-size: 0.75rem;
    transition: color 0.2s ease;
}

    .footer-link:hover {
        color: #4ade80;
    }

.separator {
    color: #d1d5db;
    font-size: 0.75rem;
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
}

.alert-error {
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
}

.alert-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.validation-message {
    color: #dc2626;
    font-size: 0.75rem;
    margin-top: 4px;
    display: block;
}

@media (max-width: 480px) {
    .login-card {
        margin: 16px;
        padding: 24px;
    }

    .system-title {
        font-size: 2rem;
    }
}