:root {
    --color-primary: #009966;
    --color-primary-light: rgba(0, 153, 102, 0.1);
    --color-bg-dark: #0f172a;
    --color-text-dark: #0f172b;
    --color-text-secondary: #45556c;
    --color-text-muted: #314158;
    --color-text-light: #6a7282;
    --color-white: #ffffff;
    --color-nav-link: rgba(255, 255, 255, 0.70);
    --color-border: #e5e7eb;
    --color-border-input: #d1d5dc;
    --color-input-bg: #f9fafb;

    --font-family: 'Inter', sans-serif;

    --shadow-card: 0px 1px 2px rgba(0, 0, 0, 0.10), 0px 1px 3px rgba(0, 0, 0, 0.10);
}

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

body {
    font-family: var(--font-family);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--color-input-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.main-content {
    flex: 1;
    display: flex;
    justify-content: center;
    padding: 32px 20px 48px;
}

.register-page {
    width: 100%;
    max-width: 672px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.progress-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.step {
    display: flex;
    align-items: center;
    gap: 8px;
}

.step-number {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: -0.18px;
    background-color: var(--color-primary);
    color: var(--color-white);
}

.step .step-label {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.18px;
    color: var(--color-text-dark);
}

.step:not(.active) .step-number {
    background-color: transparent;
    color: var(--color-text-light);
    border: 2px solid var(--color-border-input);
}

.step:not(.active) .step-label {
    font-weight: 500;
    color: var(--color-text-light);
}

.step-line {
    width: 64px;
    height: 2px;
    background-color: var(--color-border-input);
}

.feature-cards {
    display: flex;
    gap: 16px;
}

.feature-card {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 18px 16px;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 16px;
}

.feature-icon {
    width: 20px;
    height: 20px;
}

.feature-label {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: -0.18px;
    color: var(--color-text-muted);
    text-align: center;
}

.form-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-title {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.60px;
    color: var(--color-text-dark);
}

.register-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.18px;
    color: var(--color-text-dark);
}

.optional {
    font-size: 12px;
    font-weight: 400;
    letter-spacing: -0.18px;
    color: var(--color-text-light);
}

.form-row {
    display: flex;
    gap: 12px;
}

.form-row .form-group {
    flex: 1;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--color-input-bg);
    border: 1px solid var(--color-border-input);
    border-radius: 10px;
    font-family: var(--font-family);
    font-size: 16px;
    font-weight: 400;
    letter-spacing: -0.18px;
    color: var(--color-text-dark);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 153, 102, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: rgba(10, 10, 10, 0.5);
}

.form-textarea {
    resize: vertical;
    min-height: 94px;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236a7282' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 44px;
    cursor: pointer;
}

.radio-group {
    display: flex;
    gap: 16px;
}

.radio-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px 24px;
    background-color: var(--color-input-bg);
    border: 1px solid var(--color-border-input);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.radio-btn input {
    display: none;
}

.radio-label {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.15px;
    color: var(--color-text-secondary);
}

.radio-btn.active,
.radio-btn:has(input:checked) {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.radio-btn.active .radio-label,
.radio-btn:has(input:checked) .radio-label {
    color: var(--color-white);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.checkbox-input {
    width: 18px;
    height: 18px;
    margin-top: 1px;
    accent-color: var(--color-primary);
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-label {
    font-size: 14px;
    font-weight: 400;
    letter-spacing: -0.18px;
    color: var(--color-text-muted);
    line-height: 1.4;
}

.checkbox-label .link-primary {
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
}

.checkbox-label .link-primary:hover {
    text-decoration: underline;
}

.submit-btn {
    width: 100%;
    height: 56px;
    background-color: var(--color-primary);
    color: var(--color-white);
    font-family: var(--font-family);
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.18px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    opacity: 0.6;
}

.submit-btn:hover {
    background-color: #008855;
    opacity: 1;
}

.submit-btn:active {
    transform: scale(0.99);
}

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

.submit-btn .btn-loader {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.submit-btn .spinner {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

.submit-btn .spinner circle {
    stroke-dasharray: 50;
    stroke-dashoffset: 20;
}

@keyframes spin {
    100% {
        transform: rotate(360deg);
    }
}

.form-hint {
    font-size: 12px;
    font-weight: 400;
    letter-spacing: -0.18px;
    color: var(--color-text-light);
    margin-top: 4px;
}

.required {
    color: #ef4444;
    font-weight: 400;
}

.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-input.success,
.form-select.success,
.form-textarea.success {
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.address-section {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 20px;
    background-color: var(--color-white);
}

.address-section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: 16px;
}

.address-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.address-section-header .address-section-title {
    margin-bottom: 0;
}

.same-address-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
}

.same-address-toggle input {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.form-footer {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4px;
    padding-top: 4px;
}

.footer-text {
    font-size: 14px;
    font-weight: 400;
    letter-spacing: -0.18px;
    color: var(--color-text-secondary);
}

.login-link {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.18px;
    color: var(--color-primary);
    text-decoration: none;
}

.login-link:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .register-page {
        max-width: 100%;
    }

    .feature-cards {
        flex-wrap: wrap;
    }

    .feature-card {
        flex: 1 1 calc(50% - 8px);
        min-width: 140px;
    }

    .form-card {
        padding: 24px 16px;
    }

    .form-row {
        flex-direction: column;
        gap: 20px;
    }

    .radio-group {
        flex-direction: column;
        gap: 12px;
    }
}