/* Hind Siliguri Font Import */
@import url('https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@300;400;500;600;700&display=swap');

:root {
    --aws-bg: #0F1B2A;
    --aws-dark-blue: #232F3E;
    --aws-text: #E4E6EA;
    --aws-accent: #FF9900;
    --glass-bg: rgba(35, 47, 62, 0.6);
    --border-color: rgba(255, 255, 255, 0.1);
}

body {
    font-family: 'Hind Siliguri', sans-serif;
    background-color: var(--aws-bg);
    color: var(--aws-text);
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 50px auto;
    padding: 20px;
}

/* Glassmorphism Effect Card */
.sms-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

h2 {
    color: #fff;
    border-bottom: 2px solid var(--aws-accent);
    padding-bottom: 10px;
    font-weight: 600;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 12px;
    border-radius: 8px;
    font-family: 'Hind Siliguri', sans-serif;
    box-sizing: border-box;
    font-size: 16px;
}

.form-control:focus {
    outline: none;
    border-color: var(--aws-accent);
}

.btn-send {
    background-color: var(--aws-accent);
    color: #fff;
    border: none;
    padding: 14px 28px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    width: 100%;
    transition: 0.3s ease;
}

.btn-send:hover {
    background-color: #e08800;
}

/* Spinner Animation */
.spinner {
    display: none;
    border: 4px solid rgba(255, 255, 255, 0.1);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border-left-color: var(--aws-accent);
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.alert-box {
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
    display: none;
}
.alert-success {
    background: rgba(40, 167, 69, 0.2);
    border: 1px solid #28a745;
    color: #28a745;
}
.alert-danger {
    background: rgba(220, 53, 69, 0.2);
    border: 1px solid #dc3545;
    color: #dc3545;
}