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

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

/* Animated background particles */
body::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(102, 126, 234, 0.1) 0%, transparent 40%);
    animation: backgroundFloat 15s ease-in-out infinite;
    pointer-events: none;
}

@keyframes backgroundFloat {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.1); }
}

/* Floating company logo */
.floating-logo {
    position: absolute;
    top: 8%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    animation: gentleFloat 6s ease-in-out infinite;
}

.floating-logo img {
    max-width: 350px;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.5));
    opacity: 0.95;
}

@keyframes gentleFloat {
    0%, 100% { transform: translateX(-50%) translateY(0px); }
    50% { transform: translateX(-50%) translateY(-15px); }
}

/* Login container */
.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
    position: relative;
    z-index: 2;
    margin-top: 80px;
}

/* Floating login box - minimal design */
.login-box {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 45px 35px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: floatIn 0.8s ease-out;
}

@keyframes floatIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.login-form {
    position: relative;
}

.form-step {
    display: none;
    animation: slideIn 0.4s ease-out;
}

.form-step.active {
    display: block;
}

@keyframes slideIn {
    from { 
        opacity: 0; 
        transform: translateX(-20px); 
    }
    to { 
        opacity: 1; 
        transform: translateX(0); 
    }
}

h2 {
    color: rgba(255, 255, 255, 0.95);
    font-size: 26px;
    margin-bottom: 8px;
    font-weight: 600;
    text-align: center;
}

.subtitle {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    margin-bottom: 30px;
    text-align: center;
}

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

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 16px 18px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 14px;
    font-size: 15px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

input[type="text"]::placeholder,
input[type="password"]::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: rgba(102, 126, 234, 0.6);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.login-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 14px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.login-btn::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;
}

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

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(102, 126, 234, 0.4);
}

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

.back-btn {
    width: 100%;
    padding: 14px;
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.7);
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 14px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    margin-top: 12px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.25);
    color: rgba(255, 255, 255, 0.9);
}

.error-message {
    color: #ff6b6b;
    font-size: 14px;
    margin-top: 12px;
    display: none;
    text-align: center;
    padding: 10px;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(255, 107, 107, 0.2);
}

.error-message.show {
    display: block;
    animation: shake 0.4s ease-out;
}

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

/* Mobile responsive */
@media (max-width: 480px) {
    .floating-logo img {
        max-width: 250px;
    }
    
    .login-box {
        padding: 35px 25px;
    }
    
    h2 {
        font-size: 22px;
    }
    
    .login-container {
        margin-top: 60px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}