/* LTASoft Landing Page - โทนเดียวกับ app.css (IBM Plex Sans Thai + เขียว-ฟ้าไล่สี) */
:root {
    --primary: #0284C7;
    --primary-dark: #075985;
    --violet: #22C55E; /* green — คู่ไล่สีกับ primary (เขียว → ฟ้า) */
    --ink: #0f172a;
    --ink-2: #334155;
    --ink-3: #64748b;
    --line: #e2e8f0;
    --bg-soft: #f4f6fa;
    --success: #16a34a;
    --warning: #f59e0b;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'IBM Plex Sans Thai', 'Segoe UI', sans-serif;
    color: var(--ink);
    background: #fff;
    line-height: 1.65;
}
.container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.section { padding: 72px 0; }
.section-alt { background: var(--bg-soft); }
.section-title { font-size: 2rem; font-weight: 700; text-align: center; margin-bottom: .5rem; }
.section-sub { text-align: center; color: var(--ink-3); max-width: 640px; margin: 0 auto 2.5rem; }

/* Buttons */
.btn { display: inline-block; padding: .7rem 1.6rem; border-radius: .7rem; text-decoration: none; font-weight: 600; font-size: .95rem; transition: all .2s; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-outline { border-color: var(--line); color: var(--ink-2); background: #fff; }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-lg { padding: .9rem 2.2rem; font-size: 1.05rem; }

/* Navbar */
.navbar { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.navbar .container { display: flex; align-items: center; gap: 1.5rem; height: 64px; }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 700; font-size: 1.15rem; text-decoration: none; color: var(--ink); }
.brand-badge { width: 34px; height: 34px; border-radius: .6rem; background: linear-gradient(135deg, var(--violet), var(--primary)); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1rem; }
.nav-links { display: flex; gap: 1.4rem; margin-left: auto; }
.nav-links a { text-decoration: none; color: var(--ink-2); font-size: .95rem; }
.nav-links a:hover { color: var(--primary); }
.nav-login { padding: .5rem 1.1rem; font-size: .9rem; display: inline-flex; align-items: center; gap: .45rem; white-space: nowrap; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--line); border-radius: .5rem; padding: .35rem .7rem; font-size: 1.2rem; cursor: pointer; }

/* Hero */
.hero { background: linear-gradient(160deg, #ecfdf5 0%, #e0f2fe 55%, #fff 100%); padding: 88px 0 72px; }
.hero .container { display: grid; grid-template-columns: 1.05fr .95fr; gap: 3rem; align-items: center; }
.hero-badge { display: inline-block; background: #e0f2fe; color: var(--primary-dark); font-size: .8rem; font-weight: 600; padding: .3rem .9rem; border-radius: 99px; margin-bottom: 1rem; }
.hero h1 { font-size: 2.7rem; line-height: 1.3; font-weight: 700; margin-bottom: 1rem; }
.hero h1 .grad { background: linear-gradient(90deg, var(--violet), var(--primary)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { color: var(--ink-2); font-size: 1.1rem; margin-bottom: 1.75rem; }
.hero-ctas { display: flex; gap: .9rem; flex-wrap: wrap; margin-bottom: 2rem; }
.hero-stats { display: flex; gap: 2.25rem; flex-wrap: wrap; }
.hero-stats .num { font-size: 1.5rem; font-weight: 700; color: var(--primary); }
.hero-stats .lbl { font-size: .85rem; color: var(--ink-3); }

/* Hero mock window */
.mock-window { background: #fff; border: 1px solid var(--line); border-radius: 1rem; box-shadow: 0 24px 60px rgb(30 64 175 / .14); overflow: hidden; }
.mock-titlebar { display: flex; gap: .4rem; padding: .8rem 1rem; border-bottom: 1px solid var(--line); background: #f8fafc; }
.mock-dot { width: 10px; height: 10px; border-radius: 50%; }
.mock-body { padding: 1.1rem; display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.mock-tile { border-radius: .7rem; padding: .9rem; font-size: .8rem; color: var(--ink-2); background: var(--bg-soft); }
.mock-tile .big { font-size: 1.25rem; font-weight: 700; color: var(--ink); display: block; }
.mock-tile.accent { background: linear-gradient(135deg, var(--violet), var(--primary)); color: #fff; }
.mock-tile.accent .big { color: #fff; }
.mock-bar { height: 8px; border-radius: 4px; background: #e0f2fe; margin-top: .45rem; overflow: hidden; }
.mock-bar i { display: block; height: 100%; background: var(--primary); border-radius: 4px; }

/* Features */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.feature-card { background: #fff; border: 1px solid var(--line); border-radius: 1rem; padding: 1.5rem 1.25rem; transition: all .2s; }
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgb(2 6 23 / .08); border-color: #c7d7fe; }
.feature-icon { width: 46px; height: 46px; border-radius: .8rem; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; margin-bottom: .9rem; background: #eff6ff; color: var(--primary); }
.feature-card h3 { font-size: 1.05rem; margin-bottom: .35rem; }
.feature-card p { font-size: .88rem; color: var(--ink-3); }

/* Plans */
.plans-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; align-items: stretch; }
.plan-card { background: #fff; border: 1px solid var(--line); border-radius: 1.1rem; padding: 2rem 1.6rem; display: flex; flex-direction: column; position: relative; }
.plan-card.highlight { border: 2px solid var(--primary); box-shadow: 0 18px 45px rgb(37 99 235 / .16); transform: scale(1.03); }
.plan-flag { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); background: var(--primary); color: #fff; font-size: .75rem; font-weight: 600; padding: .25rem .95rem; border-radius: 99px; white-space: nowrap; }
.plan-name { font-size: 1.15rem; font-weight: 700; margin-bottom: .35rem; }
.plan-price { font-size: 2.4rem; font-weight: 700; color: var(--primary); }
.plan-price small { font-size: .95rem; color: var(--ink-3); font-weight: 400; }
.plan-features { list-style: none; margin: 1.25rem 0 1.75rem; flex-grow: 1; }
.plan-features li { padding: .4rem 0; font-size: .92rem; color: var(--ink-2); display: flex; gap: .5rem; align-items: flex-start; }
.plan-features li::before { content: '\2713'; color: var(--success); font-weight: 700; }

/* Gallery */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.shot-card { border: 1px solid var(--line); border-radius: 1rem; overflow: hidden; background: #fff; transition: all .2s; }
.shot-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgb(2 6 23 / .08); }
.shot-screen { height: 150px; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: .4rem; color: #fff; font-size: 2.2rem; }
.shot-screen span { font-size: .85rem; font-weight: 600; }
.shot-label { padding: .85rem 1rem; font-size: .92rem; font-weight: 600; color: var(--ink-2); text-align: center; }

/* Steps */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.step-card { text-align: center; padding: 1.5rem 1rem; }
.step-num { width: 52px; height: 52px; margin: 0 auto .9rem; border-radius: 50%; background: linear-gradient(135deg, var(--violet), var(--primary)); color: #fff; font-size: 1.3rem; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.step-card h3 { font-size: 1.05rem; margin-bottom: .3rem; }
.step-card p { font-size: .88rem; color: var(--ink-3); }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: start; }
.contact-channels { display: flex; flex-direction: column; gap: 1rem; }
.channel { display: flex; gap: 1rem; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 1rem; padding: 1.1rem 1.3rem; text-decoration: none; color: var(--ink); transition: all .2s; }
.channel:hover { border-color: var(--primary); transform: translateX(4px); }
.channel-icon { width: 46px; height: 46px; border-radius: .8rem; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; }
.channel .t { font-weight: 600; }
.channel .d { font-size: .85rem; color: var(--ink-3); }
.contact-form { background: #fff; border: 1px solid var(--line); border-radius: 1rem; padding: 1.75rem; }
.contact-form label { display: block; font-size: .88rem; font-weight: 600; margin-bottom: .3rem; }
.contact-form input, .contact-form textarea { width: 100%; border: 1px solid var(--line); border-radius: .6rem; padding: .6rem .85rem; font-family: inherit; font-size: .95rem; margin-bottom: 1rem; }
.contact-form input:focus, .contact-form textarea:focus { outline: 2px solid #bfdbfe; border-color: var(--primary); }

/* Footer */
.footer { background: var(--ink); color: #cbd5e1; padding: 2.5rem 0; text-align: center; font-size: .9rem; }
.footer a { color: #93c5fd; text-decoration: none; }

/* Responsive */
@media (max-width: 991.98px) {
    .hero .container { grid-template-columns: 1fr; }
    .features-grid, .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .plans-grid, .gallery-grid { grid-template-columns: 1fr; }
    .plan-card.highlight { transform: none; }
    .contact-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 1rem 20px 1.25rem; border-bottom: 1px solid var(--line); gap: .9rem; }
    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }
}
@media (max-width: 575.98px) {
    .hero h1 { font-size: 2rem; }
    .features-grid, .steps-grid { grid-template-columns: 1fr; }
    .section { padding: 52px 0; }
}