:root {
    --primary: #137547;
    --primary-dark: #0a3622;
    --primary-light: #e8f5e9;
    --accent: #FFD700;
    --accent-dark: #e6c200;
    --text: #2d3748;
    --text-light: #718096;
    --bg: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.98);
    --success: #38a169;
    --error: #e53e3e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    
    background-size: cover;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 20px;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(19, 117, 71, 0.9) 0%, rgba(10, 54, 34, 0.95) 100%);
    z-index: 0;
}

.particle-container {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 15s linear infinite;
}

@keyframes float {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-20vh) scale(1);
        opacity: 0;
    }
}

.signup-container {
    width: 100%;
    max-width: 450px;
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    position: relative;
    z-index: 2;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.signup-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 25px;
    text-align: center;
    position: relative;
    clip-path: polygon(0 0, 100% 0, 100% 90%, 0% 100%);
}

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

.logo-icon {
    width: 60px;
    height: 60px;
    background: white;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 24px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.4s ease;
}

.logo:hover .logo-icon {
    transform: rotate(15deg) scale(1.05);
}

.logo-text {
    font-weight: 700;
    font-size: 24px;
    letter-spacing: 1px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.logo-subtext {
    font-size: 13px;
    opacity: 0.9;
    margin-top: 4px;
    font-weight: 400;
}

.signup-body {
    padding: 30px;
    position: relative;
    min-height: 500px;
}

.input-group {
    position: relative;
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text);
    font-size: 14px;
    padding-left: 5px;
}

.input-field {
    width: 100%;
    padding: 14px 16px 14px 46px;
    border: 2px solid var(--primary-light);
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s ease;
    background: var(--bg);
    color: var(--text);
    font-weight: 500;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(19, 117, 71, 0.15);
    background: white;
}

.select-field {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--primary-light);
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s ease;
    background: var(--bg);
    color: var(--text);
    font-weight: 500;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.select-field:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(19, 117, 71, 0.15);
    background: white;
}

.input-icon {
    position: absolute;
    left: 16px;
    top: 42px;
    color: var(--text-light);
    font-size: 18px;
    transition: all 0.3s ease;
}

.input-field:focus+.input-icon {
    color: var(--primary);
    transform: scale(1.1);
}

.btn-primary {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(19, 117, 71, 0.3);
    z-index: 1;
}

.btn-primary::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: 0.5s;
    z-index: -1;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(19, 117, 71, 0.4);
}

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

.btn-login {
    width: 100%;
    padding: 15px;
    background: white;
    color: var(--primary);
    border: 2px solid var(--primary-light);
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-login:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.footer {
    text-align: center;
    margin-top: 25px;
    font-size: 12px;
    color: var(--text-light);
}

.footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
}

.footer a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Status messages */
#statusMessage {
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: fadeIn 0.4s ease-out;
}

.status-success {
    background: rgba(56, 161, 105, 0.1);
    color: var(--success);
    border: 1px solid rgba(56, 161, 105, 0.3);
}

.status-error {
    background: rgba(229, 62, 62, 0.1);
    color: var(--error);
    border: 1px solid rgba(229, 62, 62, 0.3);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.signup-container {
    animation: fadeInUp 0.6s cubic-bezier(0.23, 1, 0.32, 1) both;
}

.input-group {
    animation: fadeInUp 0.6s cubic-bezier(0.23, 1, 0.32, 1) both;
}

.input-group:nth-child(1) {
    animation-delay: 0.1s;
}

.input-group:nth-child(2) {
    animation-delay: 0.2s;
}

.input-group:nth-child(3) {
    animation-delay: 0.3s;
}

.input-group:nth-child(4) {
    animation-delay: 0.4s;
}

.input-group:nth-child(5) {
    animation-delay: 0.5s;
}

.input-group:nth-child(6) {
    animation-delay: 0.6s;
}

.btn-primary {
    animation: fadeInUp 0.6s cubic-bezier(0.23, 1, 0.32, 1) both;
    animation-delay: 0.7s;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    body {
        padding: 15px;
    }

    .signup-container {
        max-width: 400px;
    }
}

@media (max-width: 480px) {
    body {
        align-items: flex-start;
        padding: 15px;
    }

    .signup-container {
        margin-top: 20px;
        max-width: 100%;
    }

    .signup-header {
        padding: 20px;
    }

    .logo-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }

    .logo-text {
        font-size: 20px;
    }

    .signup-body {
        padding: 25px;
        min-height: auto;
    }
}

@media (max-width: 320px) {
    body {
        padding: 10px;
    }

    .signup-container {
        margin-top: 10px;
        max-width: 100%;
        border-radius: 16px;
    }

    .signup-header {
        padding: 15px;
    }

    .logo-icon {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    .logo-text {
        font-size: 18px;
    }

    .signup-body {
        padding: 20px;
        min-height: auto;
    }
}

/* Loading spinner */
.spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
    margin-left: 10px;
}

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

.verification-success {
    background: rgba(56, 161, 105, 0.1);
    color: var(--success);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid rgba(56, 161, 105, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
}

.username-suggestion {
    font-size: 12px;
    color: #137547;
    margin-top: 5px;
    font-style: italic;
}