@font-face {
    font-family: 'Poppins';
    src: url('fonts/Poppins-Regular.woff2') format('woff2'),
        url('fonts/Poppins-Regular.woff') format('woff');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

:root {
    --text: #333333;
    --btn: #0077FF;
    --btn-hover: #0064D6;
    --hero-bg: #FAFAFA;
    --footer-bg: #F2F2F2;
    --btn-text: #FFFFFF;
    --header-border: #E5E5E5;
    --footer-border: #E5E7EB;
    --sub-text: #64748B;
    --border-textarea: #e5e7eb;
    --about: #1E293B;
    --about-text: #475569;
    --preview-background: #FFFFFF;
    --preview-hero-gradient-start: #E3F2FD;
    --preview-hero-gradient-end: #90CAF9;
    --preview-heading: #1E293B;
    --preview-subtext: #64748B;
    --preview-primary-btn: #3B82F6;
    --preview-card-bg: #FFFFFF;
    --preview-footer-bg: #F2F2F2;
    --preview-cards-section-bg: #F8FAFC;
    --preview-cta-bg: #E0F2FE;
    --preview-card-border: #E2E8F0;
    --preview-footer-text: #1E293B;
}

body {
    font-family: Poppins, system-ui;
    margin-top: 0;
    color: var(--text);
}

html {
    scroll-behavior: smooth;
}

.header {
    display: flex;
    width: 100%;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--header-border);

}

#logo-txt {
    letter-spacing: 2px;
    font-size: 24px;
    font-weight: bold;
    margin-left: 10px;
}

#about {
    margin-right: 20px;
    font-size: 16px;
    letter-spacing: 0.5px;
}

#about>a {
    text-decoration: none;
}


#about>a:visited {
    color: var(--text);
}

#about>a:hover {
    color: var(--btn-hover);
}

.hero-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    background-color: var(--hero-bg);
}

#sub-heading {
    margin-top: 20px;
    font-size: 32px;
    font-weight: 600;
    letter-spacing: 1px;
}

.prompt-section {
    width: 100%;
    margin-top: 20px;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    padding-bottom: 15px;
}

.prompt-heading {
    font-size: 16px;
    font-weight: 600;
    color: var(--sub-text);
}

textarea {
    width: 420px;
    height: 300px;
    resize: none;
    border-radius: 16px;
    padding: 10px;
    font-size: 16px;
    font-family: Poppins, system-ui;
    color: var(--text);
    border: 1px solid var(--border-textarea);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

textarea:focus {
    border-color: var(--btn);
    box-shadow: 0 0 0 3px rgba(0, 119, 255, 0.15);
    outline: none;
}

.btn {
    background-color: var(--btn);
    color: var(--btn-text);
    border: none;
    padding: 10px 15px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 119, 255, 0.25);
}

.btn:hover {
    background-color: var(--btn-hover);
    box-shadow: 0 6px 16px rgba(0, 119, 255, 0.35);
    transform: translateY(-1px);
}

.btn:active {
    box-shadow: 0 2px 4px rgba(0, 119, 255, 0.2);
    transform: translateY(0);
}

.prompt-input {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.preview-section {
    width: 100%;
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
}

#sub-text {
    font-size: 24px;
    letter-spacing: 1px;
    font-weight: 600;
}

#preview-screen {
    display: flex;
    flex-direction: column;
    margin-top: 20px;
    width: 900px;
    height: 600px;
    border: 1px solid var(--footer-border);
    border-radius: 20px;
    box-shadow: 0px 0px 3px 0px rgba(0, 0, 0, 0);
    transition:
        box-shadow 0.25s ease,
        transform 0.25s ease,
        border-color 0.25s ease;
}

#preview-screen:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
  border-color: var(--btn);
}


#preview-screen:active {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px;
    padding-left: 20px;
    padding-right: 20px;
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    background-color: var(--preview-background);
    color: var(--preview-heading);
}

.preview-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.preview-links {
    display: flex;
    gap: 30px;
}

.preview-heading-font,
#preview-hero-heading,
.preview-card-heading,
#cta-heading {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 1px;
}

.preview-subtext-font,
#preview-hero-subtext,
#preview-theme-btn,
.preview-card-subtext,
#preview-save-theme-btn {
    font-size: 13px;
    letter-spacing: 1px;
}

.preview-hero {

    flex: 1;
    padding: 10px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 10px;
    background-image: linear-gradient(to right, var(--preview-hero-gradient-start), var(--preview-hero-gradient-end));
}

#preview-theme-btn,
#preview-save-theme-btn {
    padding: 5px 10px;
    border-radius: 8px;
    color: var(--preview-card-bg);
    background-color: var(--preview-primary-btn);
}

.preview-feature-cards {
    height: 180px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    background-color: var(--preview-cards-section-bg);
    padding: 20px;
    gap: 20px;
}

.preview-card {
    background-color: var(--preview-card-bg);
    padding: 10px;
    margin: 5px;
    box-shadow: 0px 2px 6px 0px rgba(0, 0, 0, 0);
    border-radius: 16px;
    border: 1px solid var(--preview-card-border);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 15px;
}

.preview-cta {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: var(--preview-cta-bg);
    gap: 20px;
    padding: 20px;
}

.preview-footer {
    text-align: center;
    font-size: 10px;
    background-color: var(--preview-footer-bg);
    color: var(--preview-footer-text);
    height: 20px;
    padding-top: 5px;
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px;
}

.about {
    background-color: var(--hero-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding-top: 20px;

}

#about-heading {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--about);

}

#about-sub-heading {
    margin-top: 20px;
    font-size: 20px;
    text-align: center;
    color: var(--about-text);
}

.use-cases {
    margin-top: 30px;
    width: 60%;
    display: flex;
    justify-content: space-around;
    color: var(--sub-text);
    font-size: 16px;
    padding-bottom: 70px;
    text-align: center;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    50% { transform: translateX(5px); }
    75% { transform: translateX(-5px); }
}

.error-shake {
    animation: shake 0.3s ease;
    border-color: #ff4d4f !important;
    box-shadow: 0 0 0 2px rgba(255,77,79,0.2);
}

footer {
    background-color: var(--footer-bg);
    color: var(--sub-text);
    height: 40px;
    font-size: 14px;
    display: flex;
    justify-content: center;
    align-items: center;

}

footer a {
    color: inherit;
    text-decoration: none;
    padding-left: 3px;
}

footer a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {

    .prompt-section {
        display: flex;
        flex-direction: column;
        gap: 40px;
    }

    #logo-txt,
    #about-sub-heading {
        font-size: 18px;
    }

    #about,
    .prompt-heading,
    .use-cases {
        font-size: 12px;
    }

    #sub-heading,
    #about-heading,
    #sub-text {
        font-size: 20px;
        text-align: center;
    }

    .use-cases {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    textarea {
        width: 300px;
        height: 200px;
        font-size: 14px;
    }

    .btn {
        font-size: 14px;
    }

    #preview-screen {
        width: 330px;
        height: 720px;
        overflow-y: auto;
    }

    .preview-header {
        padding-bottom: 10px;
    }

    .preview-hero {
        text-align: center;
        gap: 30px;
    }

    #preview-theme-btn {
        margin-bottom: 10px;
    }

    .preview-feature-cards {
        height: 500px;
    }

    .preview-heading-font,
    #preview-hero-heading,
    .preview-card-heading,
    #cta-heading {
        font-size: 14px;
    }

    .preview-subtext-font,
    #preview-hero-subtext,
    #preview-theme-btn,
    .preview-card-subtext,
    #preview-save-theme-btn {
        font-size: 11px;
    }

}