/* --- GLOBAL VARIABLES --- */
:root {
    --primary: #10b981;
    --primary-dark: #059669;
    --dark: #111827;
    --dark-light: #1f2937;
    --white: #ffffff;
    --bg-soft: #64e3bb;
    --bg-input: #f9fafb;
    --gray-text: #6b7280;
    --font-main: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-soft);
    color: var(--dark);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }

.eye-friendly-card {
    background: var(--white);
    border: 1px solid #e5e7eb;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    border-radius: 12px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 6px -1px rgba(16, 185, 129, 0.2);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--white);
    color: var(--white);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
}

.btn-dark {
    background-color: var(--dark);
    color: var(--white);
}

/* --- HEADER / NAVIGATION --- */
header {
    background-color: var(--white);
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span { color: var(--primary); }

.nav-links {
    display: flex;
    justify-content: center;
    gap: 30px;
}

.nav-links a {
    font-weight: 500;
    color: var(--dark-light);
    font-size: 0.95rem;
}

.nav-links a:hover { color: var(--primary); }

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    white-space: nowrap;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- FOOTER --- */
footer {
    background-color: var(--dark);
    color: #9ca3af;
    padding: 60px 0 20px;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-brand h3 { color: var(--white); margin-bottom: 15px; font-size: 1.4rem; }
.footer-brand p { font-size: 0.9rem; margin-bottom: 20px; }
.social-icons { display: flex; gap: 15px; }

.footer-col h4 { color: var(--white); margin-bottom: 20px; font-size: 1.1rem; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a:hover { color: var(--primary); }

.copyright {
    text-align: center;
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid #374151;
    font-size: 0.85rem;
}

.mobile-only {
    display: none !important;
}

/* --- RESPONSIVE --- */
@media (max-width: 900px) {
    .mobile-only {
        display: flex !important;
        flex-direction: row;
        gap: 10px;
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        background: var(--white);
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        padding: 20px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        z-index: 999;
    }
    .nav-links.open {
        display: flex;
    }
    .menu-toggle {
        display: block;
    }
    .nav-actions {
        display: none;
    }
    .footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .logo {
        font-size: 1.2rem;
    }
    .btn {
        padding: 10px 18px;
        font-size: 0.85rem;
    }
}

/* Smooth spinner appearance */
.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}
.tool-input:disabled {
    opacity: 0.6;
    background: #0f172a !important;
}
/* ===== Navigation Dropdown ===== */
.nav-links .has-dropdown {
    position: relative;
}
.nav-links .has-dropdown > a::after {
    content: " ▾";
    font-size: 0.7em;
    margin-left: 4px;
}
.nav-links .dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #111827;           /* match your header background */
    border-radius: 8px;
    min-width: 160px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
    z-index: 999;
    padding: 8px 0;
}
.nav-links .has-dropdown:hover .dropdown {
    display: block;
}
.nav-links .dropdown li {
    list-style: none;
    margin: 0;
}
.nav-links .dropdown li a {
    display: block;
    padding: 8px 16px;
    color: #e2e8f0;
    white-space: nowrap;
    transition: background 0.2s;
}
.nav-links .dropdown li a:hover {
    background: #1e293b;
    color: #10b981;
}

/* --- MOBILE MENU TOGGLE HANDLER (adds .open class) --- */
/* The JS will toggle .open on .nav-links when .menu-toggle is clicked. */