/* Register Page - Matching Index Design */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #4ADE80;
    --primary-dark: #22C55E;
    --bg-dark: #0f0f0f;
    --bg-card: #1a1a1a;
    --bg-card-hover: #242424;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    --border: #2a2a2a;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Signup Section */
.signup-section {
    width: 100%;
    min-height: calc(100vh - 140px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 24px;
}

.signup-container {
    width: 100%;
    max-width: 580px;
}

.signup-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 48px;
}

/* Header */
.signup-header {
    text-align: center;
    margin-bottom: 40px;
}

.signup-logo-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.signup-logo-img {
    width: 64px;
    height: auto;
}

.signup-logo-text {
    height: 28px;
    width: auto;
}

.signup-subtitle {
    font-weight: 400;
    font-size: 15px;
    color: var(--text-secondary);
}

/* Form */
.signup-form {
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

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

.form-input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-weight: 400;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.2s;
}

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

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(74, 222, 128, 0.03);
}

.form-input:hover:not(:focus):not(:disabled) {
    border-color: var(--text-muted);
}

.form-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-hint {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 6px;
}

/* Email Verification */
.email-verification-wrapper {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.email-input-wrapper {
    display: flex;
    gap: 8px;
}

.email-input-wrapper .form-input {
    flex: 1;
}

.verify-btn {
    padding: 14px 20px;
    background: transparent;
    border: 1px solid var(--primary);
    border-radius: 10px;
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

.verify-btn:hover:not(:disabled) {
    background: var(--primary);
    color: #000;
}

.verify-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.verification-code-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    animation: slideDown 0.3s ease;
}

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

.verification-input {
    flex: 1;
    text-align: center;
    letter-spacing: 4px;
    font-size: 16px;
    font-weight: 600;
}

.verify-confirm-btn {
    padding: 14px 20px;
    background: var(--primary);
    border: none;
    border-radius: 10px;
    color: #000;
    font-weight: 600;
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

.verify-confirm-btn:hover:not(:disabled) {
    background: var(--primary-dark);
}

.verify-confirm-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.verification-timer {
    font-size: 14px;
    font-weight: 600;
    color: #EF4444;
    min-width: 50px;
}

.verification-status {
    font-size: 13px;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 8px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.verification-status.info {
    color: #3B82F6;
    background: rgba(59, 130, 246, 0.1);
}

.verification-status.success {
    color: var(--primary);
    background: rgba(74, 222, 128, 0.1);
}

.verification-status.error {
    color: #EF4444;
    background: rgba(239, 68, 68, 0.1);
}

/* Password Wrapper */
.password-wrapper {
    position: relative;
}

.password-wrapper .form-input {
    padding-right: 48px;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: color 0.2s;
}

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

.password-match-status {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-top: 8px;
    padding: 6px 0;
}

.password-match-status.match {
    color: var(--primary);
}

.password-match-status.no-match {
    color: #EF4444;
}

/* Level Selection */
.level-selection {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 12px;
}

.level-card {
    position: relative;
    cursor: pointer;
}

.level-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.level-content {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 24px 12px;
    text-align: center;
    transition: all 0.2s;
    height: 100%;
}

.level-card:hover .level-content {
    border-color: var(--text-muted);
    background: var(--bg-card-hover);
}

.level-card input[type="radio"]:checked ~ .level-content {
    background: rgba(74, 222, 128, 0.08);
    border-color: var(--primary);
}

.level-icon {
    margin-bottom: 12px;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.level-card input[type="radio"]:checked ~ .level-content .level-icon {
    color: var(--primary);
}

.level-title {
    font-weight: 700;
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.level-description {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.level-card input[type="radio"]:checked ~ .level-content .level-title {
    color: var(--primary);
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
    margin-top: 2px;
    flex-shrink: 0;
}

.checkbox-text {
    font-weight: 400;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    user-select: none;
}

.terms-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.terms-link:hover {
    color: var(--primary-dark);
}

/* Signup Button */
.signup-btn-submit {
    width: 100%;
    padding: 14px 24px;
    background: var(--primary);
    border: none;
    border-radius: 10px;
    color: #000;
    font-weight: 700;
    font-size: 16px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 28px;
}

.signup-btn-submit:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(74, 222, 128, 0.25);
}

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

.signup-btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.signup-btn-submit:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Login Link */
.login-link {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.login-text {
    font-weight: 400;
    font-size: 14px;
    color: var(--text-secondary);
    margin-right: 8px;
}

.login-btn-link {
    font-weight: 600;
    font-size: 14px;
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

.login-btn-link:hover {
    color: var(--primary-dark);
}

/* Responsive */
@media (max-width: 768px) {
    .signup-section {
        padding: 40px 20px;
    }

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

    .signup-card {
        padding: 36px 28px;
    }

    .signup-header {
        margin-bottom: 32px;
    }

    .signup-logo-img {
        width: 52px;
    }

    .signup-logo-text {
        height: 24px;
    }

    .signup-subtitle {
        font-size: 14px;
    }

    .form-group {
        margin-bottom: 18px;
    }

    .level-selection {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .level-content {
        display: flex;
        align-items: center;
        text-align: left;
        padding: 16px;
        gap: 16px;
    }

    .level-icon {
        margin-bottom: 0;
        flex-shrink: 0;
    }

    .level-title {
        font-size: 15px;
        margin-bottom: 4px;
    }

    .level-description {
        font-size: 11px;
    }

    .email-input-wrapper {
        flex-direction: column;
    }

    .verify-btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .signup-card {
        padding: 28px 20px;
        border-radius: 16px;
    }

    .form-input {
        padding: 12px 14px;
        font-size: 16px;
    }

    .password-wrapper .form-input {
        padding-right: 44px;
    }

    .verification-input {
        font-size: 15px;
        letter-spacing: 3px;
    }

    .verify-btn,
    .verify-confirm-btn {
        padding: 12px 16px;
        font-size: 13px;
    }
}

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

.form-input:focus,
.signup-btn-submit:focus,
.verify-btn:focus,
.verify-confirm-btn:focus,
.terms-link:focus,
.login-btn-link:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Form Validation States */
.form-input:invalid:not(:placeholder-shown):not(:focus) {
    border-color: #EF4444;
}

.form-input:valid:not(:placeholder-shown) {
    border-color: var(--primary);
}

/* Loading Animation */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.signup-btn-submit.loading::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-left: 8px;
    border: 2px solid #000;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}