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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.container {
    width: 90%;
    max-width: 650px;
    margin: 60px auto;
    background: rgba(255, 255, 255, 0.95);
    color: #1f2937;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
    animation: slideUp 0.6s ease-out;
}

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

h1 {
    text-align: center;
    font-size: 32px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    font-weight: 700;
}

h2 {
    color: #667eea;
    font-size: 24px;
    margin-bottom: 20px;
    border-bottom: 3px solid #764ba2;
    padding-bottom: 10px;
}

p {
    color: #4b5563;
    line-height: 1.6;
    margin-bottom: 10px;
}

label {
    display: block;
    margin-top: 20px;
    margin-bottom: 10px;
    font-weight: 600;
    color: #667eea;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

textarea {
    width: 100%;
    min-height: 120px;
    padding: 15px;
    border-radius: 12px;
    border: 2px solid #e5e7eb;
    resize: vertical;
    font-size: 15px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f9fafb;
    color: #1f2937;
    transition: all 0.3s ease;
}

textarea:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 14px;
    margin-bottom: 15px;
    border-radius: 12px;
    border: 2px solid #e5e7eb;
    font-size: 15px;
    color: #1f2937;
    background: #f9fafb;
    transition: all 0.3s ease;
}

input[type="email"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

button {
    width: 100%;
    margin-top: 25px;
    padding: 14px;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.4);
}

button:active {
    transform: translateY(0);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

#message {
    text-align: center;
    margin-top: 20px;
    padding: 12px;
    border-radius: 10px;
    font-weight: 500;
    animation: slideDown 0.3s ease-out;
}

#message:not(:empty) {
    background: #dbeafe;
    color: #1e40af;
    border-left: 4px solid #667eea;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#login {
    animation: fadeIn 0.4s ease-out;
}

#panel {
    animation: fadeIn 0.4s ease-out;
}

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

#feedbacks {
    max-height: 600px;
    overflow-y: auto;
    padding-right: 10px;
}

#feedbacks::-webkit-scrollbar {
    width: 8px;
}

#feedbacks::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 10px;
}

#feedbacks::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
}

#feedbacks::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}