:root {
    --primary-green: #10b981;
    --primary-green-dark: #059669;
    --primary-green-light: #34d399;
    --gradient-start: #10b981;
    --gradient-end: #059669;
    --text-dark: #1f2937;
    --text-muted: #6b7280;
    --bg-light: #f0fdf4;
    --white: #ffffff;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 50%, #047857 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
    z-index: 0;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float-shape 15s ease-in-out infinite;
    z-index: 0;
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    bottom: -50px;
    right: -50px;
    animation-delay: 5s;
}

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

@keyframes float-shape {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.3; }
    50% { transform: translate(30px, -30px) scale(1.1); opacity: 0.5; }
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1100px;
}

.login-wrapper {
    background: var(--white);
    border-radius: 24px;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    display: flex;
    min-height: 600px;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-hero {
    flex: 1;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    padding: 60px 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.login-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.login-hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-logo {
    margin-bottom: 20px;
    animation: pulse 2s ease-in-out infinite;
}

.hero-logo img {
    max-width: 120px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
    line-height: 1.6;
    max-width: 400px;
    margin: 0 auto;
}

.hero-features {
    margin-top: 40px;
    text-align: left;
}

.hero-feature {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.hero-feature i {
    margin-right: 12px;
    font-size: 1.2rem;
}

.login-form-section {
    flex: 1;
    padding: 60px 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--white);
}

.back-home-btn {
    position: absolute;
    top: 30px;
    left: 30px;
    color: var(--text-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    z-index: 10;
}

.back-home-btn:hover {
    color: var(--primary-green);
    transform: translateX(-5px);
}

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

.form-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.input-wrapper {
    position: relative;
    margin-bottom: 24px;
}

.input-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.1rem;
    z-index: 2;
    transition: color 0.3s ease;
}

.form-control {
    padding: 14px 18px 14px 50px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    background: #fafafa;
}

.form-control:focus {
    border-color: var(--primary-green);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
    outline: none;
}

.form-control:focus + .input-icon,
.form-control:not(:placeholder-shown) + .input-icon {
    color: var(--primary-green);
}

.password-toggle {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 5px;
    transition: color 0.3s ease;
    z-index: 2;
}

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

.form-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.error-alert {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    padding: 14px 18px;
    border-radius: 12px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.error-alert i {
    margin-right: 10px;
    font-size: 1.1rem;
}

.login-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: var(--white);
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

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

.login-btn i {
    font-size: 1.1rem;
}

@media (max-width: 992px) {
    .login-wrapper {
        flex-direction: column;
    }

    .login-hero {
        padding: 40px 30px;
        min-height: 300px;
    }

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

    .hero-logo {
        font-size: 3rem;
    }

    .login-form-section {
        padding: 40px 30px;
    }

    .back-home-btn {
        top: 20px;
        left: 20px;
    }
}

@media (max-width: 576px) {
    body {
        padding: 10px;
    }

    .login-wrapper {
        border-radius: 16px;
    }

    .login-hero {
        padding: 30px 20px;
    }

    .login-form-section {
        padding: 30px 20px;
    }

    .form-title {
        font-size: 1.5rem;
    }

    .hero-title {
        font-size: 1.5rem;
    }
}