@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

body {
    font-family: 'Inter', sans-serif;
}

/* Animated background */
.bg-animated {
    background: linear-gradient(-45deg, #1B4332, #2D6A4F, #40916C, #52B788);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Floating particles */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 20s infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) rotate(720deg);
        opacity: 0;
    }
}

/* Input focus effects */
.input-field {
    transition: all 0.3s ease;
}

.input-field:focus {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(45, 106, 79, 0.15);
}

/* Button hover effect */
.btn-login {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-login::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn-login:hover::before {
    left: 100%;
}

/* Shake animation for errors */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

/* Preloader */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(45, 106, 79, 0.97) 0%, rgba(27, 67, 50, 0.97) 100%);
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}

#preloader .spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top: 4px solid #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#preloader .loading-text {
    margin-top: 24px;
    color: #fff;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 1px;
}

/* Password visibility toggle */
.password-toggle {
    transition: all 0.2s ease;
}

.password-toggle:hover {
    color: #2D6A4F;
}

/* Checkbox custom style */
.custom-checkbox {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid #D1D5DB;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.custom-checkbox:checked {
    background-color: #2D6A4F;
    border-color: #2D6A4F;
}

.custom-checkbox:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.custom-checkbox:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.2);
}

/* Success animation */
@keyframes successPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.success-pulse {
    animation: successPulse 0.3s ease;
}