:root {
    --font-main: 'Noto Sans Thai', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --color-bg: #FFFFFF;
    --color-bg-secondary: #FAFAFA;
    --color-text: #0A0A0A;
    --color-text-secondary: #666666;
    --color-text-tertiary: #9CA3AF;
    --color-accent: #000000;
    --color-border: #E5E5E5;
    --radius: 8px;
}

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

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
}

.form-side {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 48px;
    max-width: 480px;
    margin: 0 auto;
    width: 100%;
}

.image-side {
    background: var(--color-bg-secondary);
    position: relative;
    overflow: hidden;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #F5F5F5 0%, #EBEBEB 100%);
    color: var(--color-text-tertiary);
    font-size: 1rem;
    font-weight: 500;
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
    margin-bottom: 48px;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.75px;
    margin-bottom: 16px;
    line-height: 1.2;
}

.subtitle {
    color: var(--color-text-secondary);
    font-size: 1.125rem;
    margin-bottom: 32px;
}

/* Override form styles */
.newsletter-form-container {
    width: 100%;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.newsletter-form-input {
    font-family: var(--font-main) !important;
    color: var(--color-text) !important;
    font-size: 1rem !important;
    margin: 0 0 12px !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 100% !important;
    background: var(--color-bg) !important;
    border: 1px solid var(--color-border) !important;
    box-sizing: border-box !important;
    box-shadow: none !important;
    border-radius: var(--radius) !important;
    padding: 14px 18px !important;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.newsletter-form-input:focus {
    border-color: var(--color-accent) !important;
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05) !important;
}

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

.newsletter-form-button {
    background: var(--color-accent) !important;
    font-size: 1rem !important;
    color: white !important;
    font-family: var(--font-main) !important;
    width: 100% !important;
    max-width: 100% !important;
    white-space: normal !important;
    height: auto !important;
    padding: 14px 24px !important;
    box-shadow: none !important;
    border-radius: var(--radius) !important;
    text-align: center !important;
    font-style: normal !important;
    font-weight: 500 !important;
    line-height: 1.5 !important;
    border: none !important;
    cursor: pointer !important;
    transition: opacity 0.2s;
}

.newsletter-form-button:hover {
    opacity: 0.9;
}

.newsletter-loading-button {
    background: var(--color-accent) !important;
    font-size: 0.95rem !important;
    color: white !important;
    font-family: var(--font-main) !important;
    width: 100% !important;
    max-width: 100% !important;
    white-space: normal !important;
    height: auto !important;
    padding: 12px 24px !important;
    box-shadow: none !important;
    border-radius: var(--radius) !important;
    text-align: center !important;
    font-style: normal !important;
    font-weight: 500 !important;
    line-height: 1.5 !important;
    border: none !important;
    cursor: not-allowed !important;
    display: none !important;
}

.newsletter-success {
    display: none;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 16px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius);
}

.newsletter-success-message {
    font-family: var(--font-main) !important;
    color: var(--color-text) !important;
    font-size: 1rem !important;
    text-align: center;
}

.newsletter-error {
    display: none;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 14px 18px;
    background: #FEF2F2;
    border: 1px solid #FECACA;
    border-radius: var(--radius);
    margin-bottom: 12px;
}

.newsletter-error-message {
    font-family: var(--font-main) !important;
    color: #DC2626 !important;
    font-size: 0.95rem !important;
}

.newsletter-back-button {
    color: var(--color-text-secondary) !important;
    font: 500 0.95rem var(--font-main) !important;
    margin: 16px auto 0 !important;
    text-align: center !important;
    display: none !important;
    background: transparent !important;
    border: none !important;
    cursor: pointer !important;
    padding: 8px 16px;
}

.newsletter-back-button:hover {
    color: var(--color-text);
    text-decoration: underline;
}

.footer-text {
    margin-top: 32px;
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

/* Extra large screens - card in center */
@media (min-width: 1200px) {
    body {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 24px;
    }

    .split-layout {
        max-width: 1100px;
        width: 100%;
        min-height: 700px;
        border-radius: 16px;
        overflow: hidden;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        border: 1px solid var(--color-border);
    }

    .form-side {
        padding: 64px;
    }

    .image-side {
        min-height: 100%;
    }
}

@media (max-width: 768px) {
    .split-layout {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .image-side {
        display: block;
        height: 250px;
    }

    .form-side {
        padding: 24px;
        max-width: 100%;
        justify-content: flex-start;
        padding-top: 24px;
    }

    h1 {
        font-size: 1.75rem;
    }

    .logo {
        margin-bottom: 24px;
    }
}