/* Путь на сервере: /home/steam-widget-platform/frontend/public/css/widget.css */

/* ========================================
   GENERAL STYLES
======================================== */

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

:root {
    /* Colors */
    --primary-color: #5B7EFA;
    --secondary-color: #1B1E3B;
    --accent-color: #FF6B6B;
    --success-color: #4CAF50;
    --warning-color: #FF9800;
    --error-color: #F44336;

    /* Background */
    --bg-color: #F5F7FA;
    --widget-bg: #FFFFFF;

    /* Text */
    --text-primary: #2C3E50;
    --text-secondary: #7F8C8D;
    --text-light: #BDC3C7;

    /* Borders */
    --border-color: #E1E8ED;
    --border-radius: 12px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

/* ========================================
   WIDGET CONTAINER
======================================== */

.widget-container {
    background: var(--widget-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 100%;
    padding: var(--spacing-xl);
    animation: slideIn 0.4s ease-out;
}

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

/* ========================================
   HEADER
======================================== */

.widget-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.logo-container {
    margin-bottom: var(--spacing-md);
}

.steam-logo {
    width: 100px;
    height: auto;
}

.widget-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* ========================================
   FORM
======================================== */

.payment-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s ease;
    background: #FAFAFA;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: #FFFFFF;
    box-shadow: 0 0 0 3px rgba(91, 126, 250, 0.1);
}

.form-input::placeholder {
    color: var(--text-light);
}

/* Validation Icon */
.validation-icon {
    position: absolute;
    right: 16px;
    width: 24px;
    height: 24px;
    display: none;
}

.validation-icon.valid::before {
    content: '✓';
    color: var(--success-color);
    font-size: 20px;
    font-weight: bold;
}

.validation-icon.invalid::before {
    content: '✗';
    color: var(--error-color);
    font-size: 20px;
    font-weight: bold;
}

.validation-icon.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.form-hint {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.form-hint.error {
    color: var(--error-color);
}

.form-hint.success {
    color: var(--success-color);
}

/* Amount Input */
.amount-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.amount-input {
    padding-right: 60px;
}

.currency-label {
    position: absolute;
    right: 16px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    pointer-events: none;
}

/* Converted Amount */
.converted-amount {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
    color: white;
    font-weight: 500;
}

.converted-label {
    font-size: 14px;
    opacity: 0.9;
}

.converted-value {
    font-size: 20px;
    font-weight: 700;
}

/* ========================================
   PAYMENT BUTTONS
======================================== */

.payment-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.payment-button {
    padding: 16px 24px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.primary-button {
    background: linear-gradient(135deg, var(--primary-color) 0%, #4169E1 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(91, 126, 250, 0.3);
}

.primary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(91, 126, 250, 0.4);
}

.primary-button:active {
    transform: translateY(0);
}

.secondary-button {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #2C3E50 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(27, 30, 59, 0.3);
}

.secondary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(27, 30, 59, 0.4);
}

.secondary-button:active {
    transform: translateY(0);
}

.sbp-icon {
    width: 24px;
    height: 24px;
}

/* Disabled State */
.payment-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ========================================
   LOADING SPINNER
======================================== */

.loading-spinner {
    text-align: center;
    padding: var(--spacing-xl);
}

.spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-md);
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ========================================
   MESSAGES
======================================== */

.error-message,
.success-message {
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-top: var(--spacing-lg);
    text-align: center;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.error-message {
    background: #FFEBEE;
    border: 2px solid var(--error-color);
    color: var(--error-color);
}

.success-message {
    background: #E8F5E9;
    border: 2px solid var(--success-color);
    color: var(--success-color);
}

.error-icon,
.success-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
}

/* ========================================
   RESPONSIVE
======================================== */

@media (max-width: 768px) {
    body {
        padding: var(--spacing-md);
    }

    .widget-container {
        padding: var(--spacing-lg);
    }

    .widget-title {
        font-size: 20px;
    }

    .payment-button {
        font-size: 14px;
        padding: 14px 20px;
    }
}

@media (max-width: 480px) {
    .widget-container {
        padding: var(--spacing-md);
    }

    .converted-amount {
        flex-direction: column;
        gap: 8px;
    }
}