:root {
    --font-main: "Inter", "Segoe UI", Arial, sans-serif;
    --color-bg: #f9fbff;
    --color-primary: #007aff;
    --color-text-dark: #0b0b0b;
    --color-text-gray: #5b6b7a;
    --color-btn-primary: #007aff;
    --color-btn-primary-hover: #005ecc;
    --color-card-bg: #ffffff;
    --color-border: #e4ebf5;
}

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

body {
    font-family: var(--font-main);
    background: var(--color-bg);
    color: var(--color-text-dark);
    line-height: 1.6;
}

/* === Hero Section === */
#landingContainer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 100vh;
    padding: 2rem 5%;
    background: linear-gradient(to right, #ffffff, #f2f6ff);
    gap: 2rem;
}

#landingTextContainer {
    max-width: 600px;
}

#landingHeader {
    display: block;
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.2;
    background: linear-gradient(90deg, #007aff 0%, #0a58ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 2rem;
}

#landingTextContainer div {
    font-size: 1.3rem;
    color: var(--color-text-gray);
    margin-bottom: 2rem;
}

#landingTextContainer button {
    background-color: var(--color-btn-primary);
    color: white;
    border: none;
    padding: 0.9rem 1.6rem;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    box-shadow: 0 4px 10px rgba(0, 122, 255, 0.3);
}

#landingTextContainer button:hover {
    background-color: var(--color-btn-primary-hover);
}

#landingPhoto {
    width: 670px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    background: #fff;
    object-fit: cover;
    transition: all 0.3s ease-in-out;
}

#landingPhoto:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 18px 35px rgba(0, 0, 0, 0.15);
}

/* === Features Section === */
#featuresSection {
    background-color: #f6f9ff;
    padding: 6rem 8%;
    text-align: center;
}

.featuresHeader h2 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-text-dark);
    margin-bottom: 0.5rem;
}

.featuresHeader h2 span {
    background: linear-gradient(90deg, #007aff 0%, #0a58ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.featuresHeader p {
    color: var(--color-text-gray);
    font-size: 1.5rem;
    margin-bottom: 3rem;
}

.featuresGrid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.featureCard {
    background: var(--color-card-bg);
    border-radius: 14px;
    border: 1px solid var(--color-border);
    padding: 2rem 1.5rem;
    text-align: left;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.featureCard:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.07);
}

.featureIcon {
    font-size: 2rem;
    background: linear-gradient(135deg, #007aff, #0a58ff);
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.featureCard h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.featureCard p {
    font-size: 0.95rem;
    color: var(--color-text-gray);
}

@media (max-width: 900px) {
    #landingContainer {
        flex-direction: column;
        text-align: center;
        padding: 3rem 1.5rem;
    }

    #landingPhoto {
        width: 80%;
        max-width: 350px;
        margin-top: 2rem;
    }

    #landingHeader {
        font-size: 2.4rem;
    }

    .featureCard {
        text-align: center;
    }

    .featureIcon {
        margin: 0 auto 1rem;
    }
}

/* === How It Works Section === */
#howItWorks {
    background: linear-gradient(to right, #ffffff, #f3f7ff);
    padding: 6rem 8%;
}

.howItWorksContent {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    flex-wrap: wrap;
}

.howText {
    flex: 1;
    min-width: 320px;
}

.howText h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.howText h2 span {
    background: linear-gradient(90deg, #007aff 0%, #0a58ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.howText .subtitle {
    font-size: 1.3rem;
    color: var(--color-text-gray);
    margin-bottom: 2rem;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stepNumber {
    background: linear-gradient(135deg, #007aff, #0a58ff);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.step h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.step p {
    color: var(--color-text-gray);
    font-size: 1rem;
}

.howImage {
    flex: 1;
    min-width: 350px;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    max-width: 550px;
    object-fit: cover;
}

@media (max-width: 900px) {
    .howItWorksContent {
        flex-direction: column;
        text-align: center;
    }

    .step {
        justify-content: center;
        text-align: left;
    }

    .howImage {
        width: 80%;
        margin-top: 2rem;
    }
}

/* === Applications Section === */
#applications {
    padding: 6rem 10%;
    background-color: #f9fbff;
}

.applicationsHeader {
    text-align: center;
    margin-bottom: 3rem;
}

.applicationsHeader h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.applicationsHeader h2 span {
    background: linear-gradient(90deg, #007aff 0%, #0a58ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.applicationsHeader p {
    color: #6c7a89;
    font-size: 1.3rem;
}

.applicationsGrid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem 3rem;
    justify-items: center;
    align-items: stretch;
    max-width: 1100px;
    margin: 0 auto;
}

.applicationCard {
    background-color: #fff;
    border-radius: 20px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
    padding: 1rem;
    text-align: left;
    transition: all 0.3s ease;
    border: 1px solid #e6ebf5;
    width: 100%;
    max-width: 480px;
    min-height: 230px;
}

.applicationCard:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.appIcon {
    font-size: 2rem;
    color: white;
    background: linear-gradient(135deg, #007aff, #0a58ff);
    border-radius: 15px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.applicationCard h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #111;
}

.applicationCard p {
    font-size: 1rem;
    color: #5c6b7a;
    line-height: 1.5;
}

@media (max-width: 900px) {
    .applicationsGrid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .applicationCard {
        text-align: center;
        max-width: 100%;
    }

    .appIcon {
        margin: 0 auto 1rem auto;
    }
}

/* === Footer Section === */
#footer {
    background-color: #ffffff;
    border-top: 1px solid #e4ebf5;
    padding: 2rem 8% 0.5rem;
}

.footerContainer {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto 2.5rem;
}

.footerColumn {
    display: flex;
    flex-direction: column;
}

.footerBrand {
    font-size: 1.4rem;
    font-weight: 700;
    color: #007aff;
    margin-bottom: 0.8rem;
}

.footerDescription {
    color: #6c7a89;
    font-size: 0.9rem;
    line-height: 1.6;
}

.footerTitle {
    font-size: 1rem;
    font-weight: 600;
    color: #0b0b0b;
    margin-bottom: 1.2rem;
}

.footerLinks {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footerLinks a {
    color: #6c7a89;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
    cursor: pointer;
    display: block;
}

.footerLinks a:hover {
    color: #007aff;
}

@media (max-width: 900px) {
    .footerContainer {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footerLinks {
        align-items: center;
    }
}