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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #ffffff;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 800"><defs><linearGradient id="bg" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:%23e60000;stop-opacity:0.15"/><stop offset="100%" style="stop-color:%23b30000;stop-opacity:0.05"/></linearGradient></defs><rect fill="url(%23bg)" width="1200" height="800"/><circle cx="100" cy="100" r="80" fill="%23e60000" opacity="0.05"/><circle cx="1100" cy="200" r="120" fill="%23e60000" opacity="0.05"/><circle cx="300" cy="700" r="100" fill="%23e60000" opacity="0.05"/><circle cx="900" cy="600" r="90" fill="%23e60000" opacity="0.05"/><path d="M0,400 Q300,350 600,400 T1200,400" stroke="%23e60000" stroke-width="3" fill="none" opacity="0.15"/><path d="M0,500 Q300,450 600,500 T1200,500" stroke="%23e60000" stroke-width="3" fill="none" opacity="0.15"/><text x="50" y="750" font-family="Arial" font-size="120" fill="%23e60000" opacity="0.03" font-weight="bold">airtel</text><text x="800" y="150" font-family="Arial" font-size="100" fill="%23e60000" opacity="0.03" font-weight="bold">airtel</text></svg>') center/cover no-repeat fixed;
    z-index: -1;
}

.login-container {
    width: 100%;
    max-width: 450px;
}

.login-box {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(230, 0, 0, 0.2);
    padding: 40px;
    animation: slideUp 0.5s ease-out;
    border-top: 4px solid #e60000;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-logo {
    width: 150px;
    height: auto;
    margin: 0 auto 20px;
    display: block;
}

.login-header h1 {
    color: #e60000;
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 700;
}

.login-header p {
    color: #666;
    font-size: 1.1em;
}

.message-box {
    display: none;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.95em;
}

.message-box.error {
    display: block;
    background-color: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.message-box.success {
    display: block;
    background-color: #efe;
    color: #3c3;
    border: 1px solid #cfc;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 600;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1em;
    transition: all 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #e60000;
    box-shadow: 0 0 0 3px rgba(230, 0, 0, 0.1);
}

.remember-me {
    display: flex;
    align-items: center;
}

.remember-me label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: normal;
    margin-bottom: 0;
}

.remember-me input[type="checkbox"] {
    margin-right: 8px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.login-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #e60000 0%, #b30000 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.2em;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(230, 0, 0, 0.4);
}

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

.login-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.btn-loader {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #e60000;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

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

    100% {
        transform: rotate(360deg);
    }
}

.login-footer {
    margin-top: 20px;
    text-align: center;
    color: #666;
    font-size: 0.9em;
}

.login-footer strong {
    color: #333;
}