/**
 * Modern Register Form Styles
 * Beautiful, accessible registration form with modern design
 */

:root {
    --epcourse-form-bg: #ffffff;
    --epcourse-form-border: #e5e7eb;
    --epcourse-form-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    --epcourse-form-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
    --epcourse-form-radius: 16px;
    --epcourse-form-accent: #2E8BFF;
    --epcourse-form-accent-hover: #1e6fd9;
    --epcourse-form-text-primary: #1a1a1a;
    --epcourse-form-text-secondary: #6b7280;
    --epcourse-form-error: #ef4444;
    --epcourse-form-success: #10b981;
    --epcourse-form-input-bg: #ffffff;
    --epcourse-form-input-border: #d1d5db;
    --epcourse-form-input-focus: #2E8BFF;
}

/* Register Form Container */
.epcourse-register-form {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    padding: 40px;
    background: var(--epcourse-form-bg);
    border-radius: var(--epcourse-form-radius);
    border: 1px solid var(--epcourse-form-border);
    box-shadow: var(--epcourse-form-shadow);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Poppins', Roboto, sans-serif;
    transition: box-shadow 0.3s ease;
}

.epcourse-register-form:hover {
    box-shadow: var(--epcourse-form-shadow-hover);
}

/* Form Title */
.epcourse-register-form h2 {
    text-align: center;
    margin: 0 0 32px;
    font-size: 28px;
    font-weight: 700;
    color: var(--epcourse-form-text-primary);
    line-height: 1.2;
}

/* Form Fields */
.epcourse-form-field {
    margin-bottom: 24px;
}

.epcourse-form-field label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--epcourse-form-text-primary);
    line-height: 1.5;
}

/* Name Row - Two Columns */
.epcourse-name-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.epcourse-form-field-half {
    margin-bottom: 0;
}

/* Input Fields */
.epcourse-input {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    line-height: 1.5;
    color: var(--epcourse-form-text-primary);
    background: var(--epcourse-form-input-bg);
    border: 2px solid var(--epcourse-form-input-border);
    border-radius: 10px;
    transition: all 0.3s ease;
    box-sizing: border-box;
    font-family: inherit;
}

.epcourse-input:focus {
    outline: none;
    border-color: var(--epcourse-form-input-focus);
    box-shadow: 0 0 0 4px rgba(46, 139, 255, 0.1);
    background: #ffffff;
}

.epcourse-input::placeholder {
    color: var(--epcourse-form-text-secondary);
    opacity: 0.6;
}

.epcourse-input:disabled {
    background: #f3f4f6;
    cursor: not-allowed;
    opacity: 0.6;
}

.epcourse-input.error {
    border-color: var(--epcourse-form-error);
}

.epcourse-input.error:focus {
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

/* Password Hint */
.epcourse-password-hint {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--epcourse-form-text-secondary);
    line-height: 1.4;
}

/* Password Match Error */
.epcourse-password-match-error {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--epcourse-form-error);
    line-height: 1.4;
    animation: epcourse-shake 0.3s ease;
}

@keyframes epcourse-shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-5px);
    }
    75% {
        transform: translateX(5px);
    }
}

/* reCAPTCHA Field */
.epcourse-recaptcha-field {
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
}

.epcourse-recaptcha-field .g-recaptcha {
    transform: scale(0.95);
    transform-origin: 0 0;
}

/* Submit Button */
.epcourse-submit-field {
    margin-bottom: 24px;
    margin-top: 32px;
}

.epcourse-submit-button {
    width: 100%;
    padding: 14px 24px;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    color: #ffffff;
    background: var(--epcourse-form-accent);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.epcourse-submit-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.epcourse-submit-button:hover {
    background: var(--epcourse-form-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(46, 139, 255, 0.3);
}

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

.epcourse-submit-button:active::before {
    width: 300px;
    height: 300px;
}

.epcourse-submit-button:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(46, 139, 255, 0.2);
}

.epcourse-submit-button:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    transform: none;
    opacity: 0.7;
}

/* Loading State */
.epcourse-submit-button.loading {
    pointer-events: none;
    color: transparent;
}

.epcourse-submit-button.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: epcourse-spin 0.6s linear infinite;
}

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

/* Error Messages */
.epcourse-register-error {
    padding: 14px 16px;
    margin-bottom: 24px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-left: 4px solid var(--epcourse-form-error);
    border-radius: 8px;
    color: var(--epcourse-form-error);
    font-size: 14px;
    line-height: 1.5;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: epcourse-slideIn 0.3s ease;
}

.epcourse-register-error::before {
    content: '⚠';
    font-size: 18px;
    flex-shrink: 0;
}

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

/* Success Messages */
.epcourse-register-message.success {
    padding: 14px 16px;
    margin-top: 16px;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-left: 4px solid var(--epcourse-form-success);
    border-radius: 8px;
    color: #166534;
    font-size: 14px;
    line-height: 1.5;
    display: flex;
    align-items: center;
    gap: 10px;
}

.epcourse-register-message.success::before {
    content: '✓';
    font-size: 18px;
    flex-shrink: 0;
    color: var(--epcourse-form-success);
}

/* Links */
.epcourse-login-link {
    text-align: center;
    margin-top: 20px;
}

.epcourse-login-link a {
    color: var(--epcourse-form-accent);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.epcourse-login-link a:hover {
    color: var(--epcourse-form-accent-hover);
    text-decoration: underline;
}

.epcourse-login-link a:focus {
    outline: 2px solid var(--epcourse-form-accent);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Responsive Design */
@media (max-width: 640px) {
    .epcourse-register-form {
        padding: 32px 24px;
        border-radius: 12px;
    }

    .epcourse-register-form h2 {
        font-size: 24px;
        margin-bottom: 24px;
    }

    .epcourse-name-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .epcourse-form-field-half {
        margin-bottom: 24px;
    }

    .epcourse-form-field {
        margin-bottom: 20px;
    }

    .epcourse-input {
        padding: 12px 14px;
        font-size: 16px; /* Prevents zoom on iOS */
    }

    .epcourse-submit-button {
        padding: 12px 20px;
        font-size: 15px;
    }

    .epcourse-recaptcha-field .g-recaptcha {
        transform: scale(0.85);
    }
}

@media (max-width: 480px) {
    .epcourse-register-form {
        padding: 24px 20px;
        margin: 0 12px;
    }

    .epcourse-register-form h2 {
        font-size: 22px;
        margin-bottom: 20px;
    }
}

/* Accessibility */
.epcourse-input:focus-visible,
.epcourse-submit-button:focus-visible {
    outline: 2px solid var(--epcourse-form-accent);
    outline-offset: 2px;
}

/* Pagination Styles */
.epcourse-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    padding: 16px 0;
}

.epcourse-pagination-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 8px 12px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    color: var(--epcourse-form-text-primary);
    background: var(--epcourse-form-input-bg);
    border: 1px solid var(--epcourse-form-input-border);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.epcourse-pagination-btn:hover {
    color: var(--epcourse-form-accent);
    border-color: var(--epcourse-form-accent);
    background: rgba(46, 139, 255, 0.05);
    text-decoration: none;
}

.epcourse-pagination-current {
    color: #ffffff;
    background: var(--epcourse-form-accent);
    border-color: var(--epcourse-form-accent);
}

.epcourse-pagination-prev,
.epcourse-pagination-next {
    padding: 8px 16px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .epcourse-input,
    .epcourse-submit-button,
    .epcourse-register-error,
    .epcourse-password-match-error,
    .epcourse-pagination-btn {
        transition: none;
        animation: none;
    }
}