/* styles.css - External stylesheet for Singapore Map landing page */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.5;
    color: #1e2a3a;
    background-color: #f9fafc;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* header / hero */
.hero {
    background: linear-gradient(135deg, #022b49 0%, #1b4f6e 100%);
    color: white;
    padding: 4rem 0 5rem 0;
    text-align: center;
    border-bottom: 5px solid #f4c542;
}

.hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.hero .light {
    font-weight: 300;
    font-size: 2rem;
    display: inline-block;
}

.hero .subhead {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

/* CTA buttons */
.cta-primary {
    margin: 2rem 0 1.5rem;
}

.cta-secondary {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    text-decoration: none;
    font-weight: 600;
    border-radius: 40px;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.btn-large {
    padding: 1rem 3rem;
    font-size: 1.5rem;
}

.btn-yellow {
    background-color: #f4c542;
    color: #1e2a3a;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.btn-yellow:hover {
    background-color: #ffd966;
    transform: scale(1.02);
    box-shadow: 0 12px 24px rgba(0,0,0,0.25);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid white;
    color: white;
    padding: 0.7rem 2rem;
    font-size: 1.1rem;
}

.btn-outline:hover {
    background-color: white;
    color: #022b49;
}

.btn-inline {
    background-color: #022b49;
    color: white;
    padding: 0.5rem 1.5rem;
    margin-top: 1rem;
    border-radius: 30px;
    border: 2px solid #022b49;
}

.btn-inline:hover {
    background-color: #1b4f6e;
    border-color: #1b4f6e;
}

.scroll-hint {
    margin-top: 2.5rem;
    font-size: 1rem;
    letter-spacing: 2px;
    opacity: 0.7;
}

/* sections general */
.block {
    padding: 4rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.alt-bg {
    background-color: #ffffff;
}

.block h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #0a2a44;
    border-left: 6px solid #f4c542;
    padding-left: 1rem;
}

.block p {
    font-size: 1.15rem;
    color: #2d3e5f;
    margin-bottom: 1rem;
    max-width: 800px;
}

/* grid for图文模式 */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.reversed .text {
    order: 2;
}
.reversed .image {
    order: 1;
}

.image img {
    width: 100%;
    height: auto;
    border-radius: 24px;
    box-shadow: 0 20px 30px -10px rgba(0,40,80,0.3);
    border: 3px solid white;
    background: #eef2f6;
}

/* keyword lists & tags */
.keywords {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 1.2rem;
}

.keywords li {
    background: #e6edf5;
    padding: 0.3rem 1rem;
    border-radius: 40px;
    font-size: 1rem;
    color: #1e3a5f;
    border-left: 3px solid #f4c542;
    font-weight: 500;
}

.pill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin: 1.5rem 0 0.5rem;
}

.pill-list span {
    background: white;
    padding: 0.3rem 1.3rem;
    border-radius: 40px;
    border: 1px solid #cbd5e0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.02);
    font-size: 1rem;
}

.mini-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.8rem;
    margin: 1.5rem 0;
}

.mini-grid div {
    background: white;
    padding: 0.8rem;
    border-radius: 16px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.02);
    text-align: center;
    border: 1px solid #dee7f0;
    font-weight: 500;
}

/* cta block (last) */
.cta-block {
    background: linear-gradient(145deg, #e6f0f9, #ffffff);
    text-align: center;
    border-bottom: none;
}

.small-note {
    margin-top: 1.5rem;
    font-size: 0.95rem;
    color: #4b5f77;
}

/* footer */
footer {
    background: #0e1e2f;
    color: #a0b8cc;
    padding: 2rem 0;
    text-align: center;
}

footer a {
    color: #f4c542;
    text-decoration: none;
}

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

/* responsive */
@media (max-width: 760px) {
    .hero h1 {
        font-size: 2rem;
    }
    .hero .light {
        font-size: 1.5rem;
    }
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .reversed .text {
        order: 1;
    }
    .reversed .image {
        order: 2;
    }
    .btn-large {
        padding: 0.8rem 2rem;
        font-size: 1.3rem;
    }
    .cta-secondary {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    .btn-outline {
        width: 80%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 3rem 0 4rem;
    }
    .container {
        padding: 0 16px;
    }
    .block h2 {
        font-size: 1.7rem;
    }
}