/* Base styles for the application */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 480px;
    padding: 40px 20px;
}

.input-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.input-container h2 {
    font-size: 32px;
    font-weight: 800;
    color: #1f2937;
    margin-bottom: 12px;
}

.subtitle {
    font-size: 16px;
    color: #6b7280;
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #374151;
    margin-bottom: 8px;
    text-align: left;
}

.form-group input {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 16px;
    font-family: 'Inter', monospace;
    transition: all 0.2s ease;
    background: #fff;
}

.form-group input:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

#check-btn {
    width: 100%;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    border: none;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#check-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.4);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.modal.show {
    opacity: 1;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    z-index: 1001;
    width: 100%;
    max-width: 480px;
    padding: 20px;
}

.results-container {
    text-align: center;
}

.linea-logo {
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
    border-radius: 50%;
    object-fit: cover;
}

.results-card h3 {
    font-size: 24px;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 16px;
}

.amount {
    font-size: 48px;
    font-weight: 800;
    color: #6366f1;
    margin-bottom: 32px;
}

.amount .value {
    display: inline-block;
}

.close-btn {
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    color: #374151;
    border: 2px solid #e5e7eb;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 20px;
}

.close-btn:hover {
    background: #f3f4f6;
    border-color: #d1d5db;
}

.error {
    background: #fef2f2;
    color: #dc2626;
    padding: 16px;
    border-radius: 12px;
    margin-top: 20px;
    border: 1px solid #fecaca;
}

/* Adding these styles to fix borders and add back button */

/* Card with improved border styling */
.results-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 50px 40px;
    border-radius: 24px;
    margin-bottom: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    position: relative;
}

/* Gradient border container */
.card-border {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    border-radius: 26px;
    padding: 2px;
    margin-bottom: 20px;
}

/* Back button styling */
.back-button {
    position: absolute;
    top: 20px;
    left: 20px;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.back-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.4);
}

.back-button i {
    font-size: 18px;
}

/* Share button styling */
.share-btn {
    background: linear-gradient(135deg, #1da1f2 0%, #0d8bd9 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-left: auto;
    margin-right: auto;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(29, 161, 242, 0.4);
}

.share-btn i {
    font-size: 16px;
}

/* Developer credit at bottom */
.developer-credit {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    color: #6b7280;
}

.developer-credit a {
    color: #6366f1;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.developer-credit a:hover {
    color: #4f46e5;
    text-decoration: underline;
}