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

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(160deg, #e8f0fb 0%, #c9daf5 40%, #a8c4ef 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-wrapper {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    overflow: hidden;
}

.login-header {
    background: linear-gradient(160deg, #ffffff 0%, #eaf2ff 100%);
    padding: 36px 40px 28px;
    text-align: center;
    color: #1a2a4a;
    border-bottom: 1px solid #d6e8ff;
    position: relative;
    overflow: hidden;
}

/* Dezente blaue Kreise als Hintergrund-Deko */
.login-header::before,
.login-header::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    opacity: 0.07;
    background: #2d6bbf;
    pointer-events: none;
}
.login-header::before {
    width: 220px;
    height: 220px;
    top: -80px;
    left: -60px;
}
.login-header::after {
    width: 160px;
    height: 160px;
    bottom: -60px;
    right: -40px;
}

.logo-container {
    display: inline-block;
    margin-bottom: 14px;
    animation: logo3d 4s ease-in-out infinite;
    transform-style: preserve-3d;
}

.login-header img.login-logo {
    height: 60px;
    display: block;
    filter: drop-shadow(0 4px 10px rgba(45, 107, 191, 0.25));
}

@keyframes logo3d {
    0%   { transform: perspective(600px) rotateY(-5deg) rotateX(2deg)  translateY(0px); }
    25%  { transform: perspective(600px) rotateY(0deg)  rotateX(0deg)  translateY(-7px); }
    50%  { transform: perspective(600px) rotateY(5deg)  rotateX(-2deg) translateY(-3px); }
    75%  { transform: perspective(600px) rotateY(0deg)  rotateX(0deg)  translateY(-7px); }
    100% { transform: perspective(600px) rotateY(-5deg) rotateX(2deg)  translateY(0px); }
}

.login-header h1 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin: 0;
    color: #1a2a4a;
}

.login-header p {
    font-size: 0.82rem;
    color: #5a7aaa;
    margin-top: 4px;
}

.login-body {
    padding: 36px 40px 32px;
}

.form-group {
    margin-bottom: 18px;
    position: relative;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: #4a5568;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 12px;
    color: #a0aec0;
    font-size: 14px;
    pointer-events: none;
}

.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="text"] {
    width: 100%;
    padding: 11px 40px 11px 36px;
    border: 1.5px solid #e2e8f0;
    border-radius: 8px;
    font-size: 0.95rem;
    color: #2d3748;
    background: #f8fafc;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    outline: none;
}

.form-group input:focus {
    border-color: #2d6bbf;
    background: #fff;
    box-shadow: 0 0 0 3px rgba(45, 107, 191, 0.12);
}

.toggle-pw {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    color: #a0aec0;
    cursor: pointer;
    padding: 0;
    font-size: 14px;
    transition: color 0.2s;
}

.toggle-pw:hover {
    color: #2d4a7a;
}

.btn-login {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #2d6bbf, #1a4a9a);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
    margin-top: 8px;
    letter-spacing: 0.3px;
}

.btn-login:hover {
    opacity: 0.92;
}

.btn-login:active {
    transform: scale(0.99);
}

.btn-login:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

#flash-messages {
    margin-top: 16px;
}

.flash-message {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 8px;
    font-size: 0.875rem;
    line-height: 1.5;
    margin-top: 10px;
    animation: fadeSlideIn 0.3s ease-out;
}

.flash-message.danger {
    background-color: #fff5f5;
    border: 1px solid #fed7d7;
    color: #c53030;
}

.flash-message .fas {
    font-size: 15px;
    flex-shrink: 0;
    margin-top: 1px;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-footer {
    text-align: center;
    padding: 14px 40px 20px;
    font-size: 0.75rem;
    color: #a0aec0;
    border-top: 1px solid #f0f4f8;
}