/* ===== Base & Reset ===== */
*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

/* ===== Buttons ===== */
.btn-primary {
    background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px -10px rgba(20, 184, 166, 0.5);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.4);
}

/* ===== Navbar ===== */
#navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 20px rgba(16, 42, 67, 0.08);
}

.nav-logo-text {
    transition: color 0.4s ease;
}

#navbar.scrolled .nav-logo-text {
    color: #102a43;
}

#navbar .nav-link {
    color: rgba(255, 255, 255, 0.85);
}

#navbar.scrolled .nav-link {
    color: #486581;
}

#navbar .btn-primary {
    background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
}

/* ===== Hero Glows ===== */
.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: glowPulse 6s ease-in-out infinite;
}

.hero-glow-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(20, 184, 166, 0.3) 0%, transparent 70%);
    top: -100px;
    right: -100px;
}

.hero-glow-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(14, 116, 144, 0.25) 0%, transparent 70%);
    bottom: -50px;
    left: -50px;
    animation-delay: -3s;
}

.hero-glow-3 {
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(94, 234, 212, 0.2) 0%, transparent 70%);
    top: 40%;
    left: 30%;
    animation-delay: -1.5s;
}

@keyframes glowPulse {
    0%, 100% { transform: scale(1); opacity: 0.4; }
    50% { transform: scale(1.1); opacity: 0.5; }
}

/* ===== Floating Cards ===== */
.floating-card {
    animation: float 6s ease-in-out infinite;
}

.card-1 { animation-delay: 0s; }
.card-2 { animation-delay: -1.5s; }
.card-3 { animation-delay: -3s; }
.card-4 { animation-delay: -4.5s; }
.card-5 { animation-delay: -2s; }

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

/* ===== Menu Tabs ===== */
.menu-tab {
    background: transparent;
    color: #627d98;
    border: none;
    cursor: pointer;
}

.menu-tab.active {
    background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
    color: white;
    box-shadow: 0 4px 15px -5px rgba(20, 184, 166, 0.4);
}

.menu-tab:not(.active):hover {
    background: rgba(20, 184, 166, 0.08);
    color: #0d9488;
}

/* ===== Scroll Reveal ===== */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; }
}

/* ===== Mobile Menu ===== */
.mobile-link {
    display: block;
    padding: 0.5rem 0;
}

/* ===== Focus Styles ===== */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid #14b8a6;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== Selection ===== */
::selection {
    background: rgba(20, 184, 166, 0.2);
    color: #102a43;
}