/* Registration Form Styling */

/* Force all Unicode symbols to render as text (not emoji) on macOS/iOS */
* { font-variant-emoji: text; }

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

:root {
    /* Color Palette */
    --primary-color: #c41e3a;
    --primary-dark: #8b0000;
    --success-color: #27ae60;
    --error-color: #e74c3c;
    --warning-color: #f39c12;
    --info-color: #c41e3a;
    --light-bg: #f5f5f5;
    --border-color: #ddd;
    --text-dark: #1a1a1a;
    --text-light: #555555;
    
    /* Typography */
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition-fast: 0.2s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
}

/* Body and Background */
body {
    font-family: var(--font-main);
    background: white;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-md);
    color: var(--text-dark);
}

/* Back Button */
.back-button {
    position: fixed;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: white;
    color: #c41e3a;
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 15px rgba(196, 30, 58, 0.15);
    z-index: 50;
    border: 2px solid #c41e3a;
}

.back-button:hover {
    background: #c41e3a;
    color: white;
    transform: translateX(-3px);
    box-shadow: 0 6px 20px rgba(196, 30, 58, 0.3);
}

.back-icon {
    font-size: 18px;
    font-weight: bold;
}

.back-text {
    display: inline;
}

@media (max-width: 480px) {
    .back-button {
        top: var(--spacing-sm);
        left: var(--spacing-sm);
        padding: 8px 12px;
        font-size: 12px;
    }

    .back-text {
        display: none;
    }

    .back-icon {
        font-size: 16px;
    }
}

/* Registration Container */
.registration-container {
    width: 100%;
    max-width: 500px;
}

/* Registration Card */
.registration-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px rgba(196, 30, 58, 0.15);
    padding: var(--spacing-2xl);
    animation: slideUp 0.4s ease-out;
    border-top: 4px solid #c41e3a;
}

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

/* Header */
.registration-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.registration-header h1 {
    font-size: 28px;
    color: #c41e3a;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.registration-header p {
    color: var(--text-light);
    font-size: 14px;
}

/* Form */
.registration-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Form Group */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Labels */
.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    text-transform: none;
}

/* Input Fields */
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="tel"],
.form-group select {
    padding: var(--spacing-md) var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-family: var(--font-main);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    background-color: #fff;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="password"]:focus,
.form-group input[type="tel"]:focus,
.form-group select:focus {
    outline: none;
    border-color: #c41e3a;
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

/* Select Dropdown */
.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><polyline points="6 9 12 15 18 9"></polyline></svg>');
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    background-size: 20px;
    padding-right: 40px;
}

/* Error State */
.form-group input[type="text"].error,
.form-group input[type="email"].error,
.form-group input[type="password"].error,
.form-group input[type="tel"].error,
.form-group select.error {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

/* Error Messages */
.error-message {
    font-size: 12px;
    color: var(--error-color);
    margin-top: -4px;
    display: none;
}

.error-message.show {
    display: block;
}

/* Password Input Wrapper */
.password-input-wrapper {
    display: flex;
    align-items: center;
    position: relative;
}

.password-input-wrapper input {
    flex: 1;
    padding-right: 45px;
}

/* Toggle Password Button */
.toggle-password {
    position: absolute;
    right: var(--spacing-md);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    color: var(--text-light);
    padding: var(--spacing-sm);
    transition: color var(--transition-fast);
}

.toggle-password:hover {
    color: var(--info-color);
}

.toggle-password:focus {
    outline: none;
}

/* Password Strength Indicator */
.password-strength {
    margin-top: var(--spacing-sm);
}

.strength-bar {
    width: 100%;
    height: 6px;
    background-color: var(--light-bg);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.strength-fill {
    height: 100%;
    width: 0%;
    border-radius: var(--radius-sm);
    transition: width var(--transition-normal), background-color var(--transition-normal);
}

.strength-fill.weak {
    width: 25%;
    background-color: #e74c3c;
}

.strength-fill.fair {
    width: 50%;
    background-color: #f39c12;
}

.strength-fill.good {
    width: 75%;
    background-color: #c41e3a;
}

.strength-fill.strong {
    width: 100%;
    background-color: #27ae60;
}

.strength-text {
    font-size: 12px;
    color: var(--text-light);
}

/* Password Requirements */
.password-requirements {
    background-color: var(--light-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 13px;
}

.password-requirements p {
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.password-requirements ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.requirement {
    color: var(--error-color);
    display: flex;
    align-items: center;
    transition: color var(--transition-fast);
}

.requirement::before {
    content: '✗';
    margin-right: var(--spacing-sm);
    font-weight: bold;
}

.requirement.valid {
    color: #c41e3a;
}

.requirement.valid::before {
    content: '✓';
}

/* Checkbox Group */
.checkbox-group {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.form-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    margin-top: 2px;
    accent-color: #c41e3a;
}

.checkbox-label {
    font-size: 13px;
    font-weight: normal;
    cursor: pointer;
    color: var(--text-dark);
    margin: 0;
}

.form-group input[type="checkbox"]:focus {
    outline: 2px solid #c41e3a;
    outline-offset: 2px;
}

/* Submit Button */
.btn-submit {
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, #c41e3a 0%, #8b0000 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: var(--spacing-md);
    box-shadow: 0 4px 15px rgba(196, 30, 58, 0.4);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(196, 30, 58, 0.6);
}

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

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Login Link */
.login-link {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.login-link p {
    font-size: 13px;
    color: var(--text-light);
}

.login-link a {
    color: #c41e3a;
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.login-link a:hover {
    color: #8b0000;
}

/* Responsive Design */

/* Tablet (768px and below) */
@media (max-width: 768px) {
    .registration-card {
        padding: var(--spacing-xl);
    }

    .registration-header h1 {
        font-size: 24px;
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    body {
        padding: var(--spacing-sm);
    }

    .registration-container {
        max-width: 100%;
    }

    .registration-card {
        padding: var(--spacing-lg);
        border-radius: var(--radius-md);
    }

    .registration-header h1 {
        font-size: 22px;
    }

    .registration-header p {
        font-size: 12px;
    }

    .form-group {
        gap: var(--spacing-sm);
    }

    .form-group label {
        font-size: 13px;
    }

    .form-group input[type="email"],
    .form-group input[type="password"],
    .form-group input[type="tel"],
    .form-group select {
        padding: var(--spacing-md);
        font-size: 16px; /* Prevents auto-zoom on iOS */
    }

    .password-requirements {
        font-size: 12px;
        padding: var(--spacing-md);
    }

    .btn-submit {
        padding: var(--spacing-md) var(--spacing-md);
        font-size: 16px;
    }

    .toggle-password {
        right: 12px;
    }
}

/* Minimum Width Support (360px) */
@media (max-width: 360px) {
    .registration-card {
        padding: var(--spacing-md);
    }

    .registration-header {
        margin-bottom: var(--spacing-lg);
    }

    .registration-form {
        gap: var(--spacing-md);
    }

    .form-group {
        gap: 4px;
    }

    .password-requirements {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .password-requirements ul {
        gap: 6px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}