/* ── Base ── */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    overflow-x: hidden;
}

::selection {
    background: rgba(5, 150, 105, 0.2);
    color: #064e3b;
}

/* ── Hero Gradient ── */
.hero-gradient {
    background: linear-gradient(135deg, #064e3b 0%, #059669 40%, #10b981 70%, #34d399 100%);
}

/* ── Hero Pattern ── */
.hero-pattern {
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.05) 0%, transparent 40%),
        radial-gradient(circle at 60% 80%, rgba(255,255,255,0.03) 0%, transparent 45%);
}

/* ── Hero Animations ── */
.hero-subtitle {
    animation: fadeDown 1s ease forwards;
    opacity: 0;
}

.hero-headline {
    animation: fadeUp 1s ease 0.2s forwards;
    opacity: 0;
}

.hero-desc {
    animation: fadeUp 1s ease 0.4s forwards;
    opacity: 0;
}

.hero-cta {
    animation: fadeUp 1s ease 0.6s forwards;
    opacity: 0;
}

.hero-scroll {
    animation: fadeIn 1s ease 1.2s forwards;
    opacity: 0;
}

@keyframes fadeDown {
    from { opacity: 0; transform: translateY(-16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ── Buttons ── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: #fff;
    color: #064e3b;
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 0;
    background: rgba(6, 78, 59, 0.06);
    transition: height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.btn-primary:hover::after {
    height: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(6, 78, 59, 0.2);
}

.btn-primary span,
.btn-primary svg {
    position: relative;
    z-index: 1;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: transparent;
    color: #d1fae5;
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-decoration: none;
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-2px);
}

/* ── Scroll Reveal ── */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Hidden by default for progressive enhancement — JS adds .revealed */
.reveal {
    opacity: 0;
    transform: translateY(30px);
}

@media (prefers-reduced-motion: no-preference) {
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Navbar ── */
#navbar {
    background: transparent;
    backdrop-filter: none;
}

#navbar.scrolled {
    background: rgba(254, 253, 248, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(6, 78, 59, 0.08);
}

/* ── Mobile Menu ── */
#mobile-menu.open {
    transform: translateX(0);
}

/* ── Menu Button Animation ── */
#menu-btn.active #bar1 {
    transform: rotate(45deg) translate(3px, 3px);
}

#menu-btn.active #bar2 {
    opacity: 0;
}

#menu-btn.active #bar3 {
    transform: rotate(-45deg) translate(3px, -3px);
    width: 1.5rem;
}

/* ── Image hover smoothness ── */
img {
    image-rendering: auto;
    image-rendering: -webkit-optimize-contrast;
}

/* ── Focus styles ── */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 1px solid #059669;
    outline-offset: 4px;
}

/* ── Thin scrollbar ── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #fdf9f0;
}

::-webkit-scrollbar-thumb {
    background: #a7f3d0;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #34d399;
}