/* ========================================
   F-1 Visa Advisors — Custom Styles
   ======================================== */

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Geometric Background Shapes --- */
.geo-shape {
    position: absolute;
    pointer-events: none;
    opacity: 0.4;
}

.geo-circle-1 {
    top: 15%;
    right: -8%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    border: 2px solid rgba(255, 99, 42, 0.08);
    animation: float-slow 20s ease-in-out infinite;
}

.geo-circle-2 {
    bottom: 20%;
    left: -10%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    border: 2px solid rgba(255, 99, 42, 0.06);
    animation: float-slow 25s ease-in-out infinite reverse;
}

.geo-square-1 {
    top: 40%;
    right: 5%;
    width: 80px;
    height: 80px;
    background: rgba(255, 99, 42, 0.04);
    border-radius: 16px;
    transform: rotate(45deg);
    animation: float-medium 15s ease-in-out infinite;
}

.geo-triangle-1 {
    top: 60%;
    left: 8%;
    width: 0;
    height: 0;
    border-left: 40px solid transparent;
    border-right: 40px solid transparent;
    border-bottom: 70px solid rgba(255, 99, 42, 0.05);
    animation: float-medium 18s ease-in-out infinite reverse;
}

.geo-dots {
    top: 30%;
    left: 3%;
    width: 120px;
    height: 120px;
    background-image: radial-gradient(circle, rgba(255, 99, 42, 0.15) 1.5px, transparent 1.5px);
    background-size: 16px 16px;
    opacity: 0.6;
    animation: float-slow 22s ease-in-out infinite;
}

@keyframes float-slow {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(3deg); }
}

@keyframes float-medium {
    0%, 100% { transform: translateY(0) rotate(45deg); }
    50% { transform: translateY(-20px) rotate(50deg); }
}

/* --- Navigation --- */
#navbar {
    transition: background-color 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}

.nav-scrolled #navbar {
    background-color: rgba(15, 16, 19, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #ff632a, #ff8250);
    border-radius: 1px;
    transition: width 0.2s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* --- Buttons --- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background: linear-gradient(135deg, #ff632a 0%, #ff8250 100%);
    color: #ffffff;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 0.9375rem;
    border-radius: 12px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 4px 20px rgba(255, 99, 42, 0.3), 0 2px 8px rgba(255, 99, 42, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 99, 42, 0.4), 0 4px 12px rgba(255, 99, 42, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #ffffff;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: 12px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.25s ease;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 99, 42, 0.4);
    transform: translateY(-2px);
}

.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: #ffffff;
    color: #ff632a;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.25s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    background: #f8f8f8;
}

.btn-cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.4);
    color: #ffffff;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.25s ease;
}

.btn-cta-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.7);
    transform: translateY(-2px);
}

/* --- Service Cards --- */
.service-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* --- Why Us Cards --- */
.why-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.why-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

/* --- Scroll Reveal (progressive enhancement) --- */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
}

/* --- Mobile Menu --- */
.mobile-menu {
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-nav-link {
    display: block;
}

/* --- Form Styles --- */
input:focus,
select:focus,
textarea:focus {
    outline: none;
}

select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237b7d87' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

/* --- Selection --- */
::selection {
    background: rgba(255, 99, 42, 0.3);
    color: #ffffff;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #1f2025;
}

::-webkit-scrollbar-thumb {
    background: #3a3c43;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #5f6169;
}

/* --- Responsive --- */
@media (max-width: 640px) {
    .geo-circle-1,
    .geo-circle-2,
    .geo-square-1,
    .geo-triangle-1,
    .geo-dots {
        display: none;
    }
}