:root {
    --primary: #4f46e5;
    --primary-light: #6366f1;
    --primary-dark: #4338ca;
    --secondary: #ec4899;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --bg-input: rgba(255, 255, 255, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.7);
    --border-color: rgba(255, 255, 255, 0.5);
    --error: #ef4444;
    --success: #10b981;
}

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

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem 1rem;
    position: relative;
    overflow-x: hidden;
    background-color: #f3f4f6;
}

/* Background Animation */
.background-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 100%);
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 20s infinite ease-in-out alternate;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: var(--primary);
    animation-delay: 0s;
}

.blob-2 {
    bottom: -10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: var(--secondary);
    animation-delay: -5s;
}

.blob-3 {
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: #06b6d4;
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(100px, 50px) scale(1.1); }
    100% { transform: translate(-50px, 100px) scale(0.9); }
}

/* Main Container */
.container {
    width: 100%;
    max-width: 650px;
    z-index: 1;
}

/* Glass Card */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15), 
                inset 0 0 0 1px rgba(255, 255, 255, 0.5);
}

/* Header */
.form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-placeholder {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
    box-shadow: 0 10px 25px -5px rgba(79, 70, 229, 0.5);
}

.form-header h1 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.form-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.form-header .description {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Sections */
.form-section {
    background: rgba(255, 255, 255, 0.4);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.6);
}

.form-section h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 2px solid rgba(79, 70, 229, 0.1);
    padding-bottom: 0.5rem;
}

/* Inputs */
.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.input-group {
    position: relative;
    margin-bottom: 1.25rem;
}

.input-group input, .input-group select {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    background: var(--bg-input);
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-main);
    transition: all 0.3s ease;
    outline: none;
}

.input-group input:focus, .input-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.15);
    background: #fff;
}

/* Floating Label */
.input-group label {
    position: absolute;
    left: 3rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1rem;
    transition: all 0.3s ease;
    pointer-events: none;
    background: transparent;
    padding: 0 0.25rem;
}

.input-group input:focus ~ label,
.input-group input:not(:placeholder-shown) ~ label,
.input-group select:focus ~ .select-label,
.input-group select:valid ~ .select-label {
    top: 0;
    font-size: 0.8rem;
    color: var(--primary);
    background: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(255,255,255,1) 50%, rgba(255,255,255,1) 100%);
    border-radius: 4px;
}

/* For select to work with floating label */
.input-group select option[value=""][disabled] {
    display: none;
}

.input-group.select-group select:invalid {
    color: transparent;
}

.input-group .icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    transition: color 0.3s ease;
}

.input-group input:focus ~ .icon,
.input-group select:focus ~ .icon {
    color: var(--primary);
}

/* Validation Styles */
.input-group input.invalid,
.input-group select.invalid {
    border-color: var(--error);
}

.input-group input.invalid:focus {
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.15);
}

.error-message {
    display: block;
    color: var(--error);
    font-size: 0.75rem;
    margin-top: 0.25rem;
    margin-left: 0.5rem;
    opacity: 0;
    transform: translateY(-5px);
    transition: all 0.3s ease;
    position: absolute;
}

.input-group input.invalid ~ .error-message,
.input-group select.invalid ~ .error-message {
    opacity: 1;
    transform: translateY(0);
    position: relative;
}

/* Amount Input Specific */
.payment-section {
    background: rgba(255, 255, 255, 0.6);
}

.amount-card {
    position: relative;
    background: #fff;
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
    border: 2px solid var(--primary-light);
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 25px -5px rgba(79, 70, 229, 0.15);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.amount-card .currency {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-right: 0.25rem;
}

.amount-card input {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-dark);
    border: none;
    outline: none;
    background: transparent;
    width: 100%;
    text-align: center;
    padding: 0;
    margin: 0;
    font-family: 'Poppins', sans-serif;
}

/* Hide arrow for number input */
.amount-card input::-webkit-outer-spin-button,
.amount-card input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.amount-card input[type=number] {
  -moz-appearance: textfield;
}

.amount-card .amount-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Payment Method */
.payment-methods {
    display: grid;
    grid-template-columns: 1fr;
}

.method-option {
    cursor: pointer;
}

.method-option input {
    display: none;
}

.method-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border: 2px solid var(--primary);
    border-radius: 12px;
    background: rgba(79, 70, 229, 0.05);
    transition: all 0.3s ease;
}

.method-content span {
    font-weight: 500;
    color: var(--primary-dark);
}

.method-option input:checked + .method-content {
    background: rgba(79, 70, 229, 0.1);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.15);
}

/* Button */
.form-actions {
    margin-top: 2rem;
}

.btn-submit {
    width: 100%;
    padding: 1.25rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 10px 20px -5px rgba(236, 72, 153, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 25px -5px rgba(236, 72, 153, 0.5);
}

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

.btn-loader {
    display: none;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

.btn-submit.loading .btn-text {
    display: none;
}

.btn-submit.loading .btn-loader {
    display: block;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.secure-badge {
    text-align: center;
    margin-top: 1rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.secure-badge i {
    color: var(--success);
}

/* Responsiveness */
@media (max-width: 600px) {
    .input-row {
        grid-template-columns: 1fr;
    }
    
    .glass-card {
        padding: 1.5rem;
        border-radius: 16px;
    }
    
    .form-header h2 {
        font-size: 1.2rem;
    }
}