/* style.css for Graph Generacula Website */

/* --- Theme & Font Definitions (from App) --- */
:root {
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}

body.theme-dark-glass, :root {
    --bg-primary-gradient: linear-gradient(135deg, #1a0626 0%, #2d1b47 100%);
    --bg-secondary: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --border-color: rgba(255, 255, 255, 0.2);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --accent-primary: #4ecdc4;
    --accent-primary-hover: #6be0d8;
    --accent-secondary: #ffd93d;
    --accent-secondary-hover: #ffe363;
    --bg-dropdown: #2d1b47; /* Fix for dropdown */
}

body.theme-dark {
    --bg-primary-gradient: #1e1e1e;
    --bg-secondary: #252526;
    --text-primary: #cccccc;
    --text-secondary: #a0a0a0;
    --border-color: #444444;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --accent-primary: #0e639c;
    --accent-primary-hover: #1177b9;
    --accent-secondary: #5e4db2;
    --accent-secondary-hover: #715fc9;
    --bg-dropdown: #252526; /* Fix for dropdown */
}

body.theme-light {
    --bg-primary-gradient: #f0f0f0;
    --bg-secondary: #ffffff;
    --text-primary: #333333;
    --text-secondary: #555555;
    --border-color: #d1d1d1;
    --shadow-color: rgba(0, 0, 0, 0.15);
    --accent-primary: #007acc;
    --accent-primary-hover: #0098e6;
    --accent-secondary: #5e4db2;
    --accent-secondary-hover: #715fc9;
    --bg-dropdown: #ffffff; /* Fix for dropdown */
}

body.theme-memphis {
    --bg-primary-gradient: #f0f0f0;
    --bg-secondary: #ffffff;
    --text-primary: #000000;
    --text-secondary: #444444;
    --border-color: #000000;
    --shadow-color: transparent;
    --accent-primary: #FFD300;
    --accent-primary-hover: #FFE34D;
    --accent-secondary: #00C4B3;
    --accent-secondary-hover: #00DBC5;
    --bg-dropdown: #ffffff; /* Fix for dropdown */
}

/* --- Global & Layout Styles --- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-main);
    background: var(--bg-primary-gradient);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.4s ease;
}
.container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 20px; }
section { padding: 80px 0; }
h1, h2, h3 { line-height: 1.2; margin-bottom: 20px; color: var(--text-primary); }
h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; text-align: center; }
h3 { font-size: 1.5rem; color: var(--accent-primary); }
p { font-size: 1.1rem; color: var(--text-secondary); }

/* --- Navigation Bar --- */
.navbar {
    position: sticky; top: 0; width: 100%; z-index: 1000;
    padding: 15px 0;
    background: var(--bg-secondary);
    backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s, border-color 0.3s;
}
.navbar .container { display: flex; justify-content: space-between; align-items: center; }
.nav-logo { display: flex; align-items: center; text-decoration: none; color: var(--text-primary); font-size: 1.2rem; font-weight: 500; }
.nav-logo img { height: 32px; margin-right: 12px; }
.navbar nav { display: flex; align-items: center; gap: 25px; }
.navbar nav a { color: var(--text-secondary); text-decoration: none; font-size: 1rem; transition: color 0.2s ease-in-out; }
.navbar nav a:hover { color: var(--text-primary); }

/* --- UI Controls (Toggles) --- */
.ui-controls { display: flex; gap: 15px; }
.ui-controls select {
    background-color: var(--bg-tertiary, rgba(255, 255, 255, 0.1));
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 6px 10px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    cursor: pointer;
}
.ui-controls select:focus { outline: 2px solid var(--accent-primary); }
.ui-controls select option {
    background-color: var(--bg-dropdown);
    color: var(--text-primary);
}

.nav-cta {
    background-color: var(--accent-primary);
    color: #000 !important;
    padding: 8px 16px; border-radius: 8px; font-weight: 500;
    transition: background-color 0.2s ease-in-out;
}
.nav-cta:hover { background-color: var(--accent-primary-hover); color: #000 !important; }

/* --- Hero Section --- */
.hero { min-height: calc(100vh - 70px); display: flex; align-items: center; text-align: center; padding: 60px 0; }
.hero-content { max-width: 800px; }
.hero-logo { width: 120px; height: auto; margin-bottom: 30px; }
.hero .subtitle { font-size: 1.3rem; max-width: 700px; margin: 20px auto 40px auto; }

/* --- Buttons --- */
.btn { display: inline-block; padding: 12px 28px; border: 1px solid var(--border-color); font-size: 1rem; text-align: center; cursor: pointer; transition: all 0.2s ease-in-out; border-radius: 10px; text-decoration: none; font-weight: 500; }
.btn.btn-primary { background-color: var(--accent-primary); color: #000; border-color: var(--accent-primary); box-shadow: 0 0 15px 0 var(--accent-primary); }
.btn.btn-primary:hover { box-shadow: 0 0 20px 0 var(--accent-primary-hover); transform: translateY(-2px); background-color: var(--accent-primary-hover); }
.btn.btn-secondary { background-color: var(--accent-secondary); color: #000; border-color: var(--accent-secondary); box-shadow: 0 0 15px 0 var(--accent-secondary); }
.btn.btn-secondary:hover { box-shadow: 0 0 20px 0 var(--accent-secondary-hover); transform: translateY(-2px); background-color: var(--accent-secondary-hover); }
body.theme-memphis .btn { border-radius: 0; border-width: 2px; box-shadow: 4px 4px 0px var(--border-color); }
body.theme-memphis .btn:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0px var(--border-color); }

/* --- Features Section --- */
.features { background: rgba(0,0,0,0.1); }
.feature-detailed { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 40px; margin-top: 60px; }
.feature-text { background: var(--bg-secondary); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid var(--border-color); border-radius: 20px; padding: 30px; }

/* --- Screenshots Section --- */
.screenshot-gallery { margin-top: 60px; display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; align-items: center; }
.screenshot-gallery img { width: 100%; border-radius: 15px; border: 1px solid var(--border-color); box-shadow: 0 8px 25px var(--shadow-color); transition: transform 0.3s ease; cursor: pointer; }
.screenshot-gallery img:hover { transform: scale(1.05); }
.screenshots .note { text-align: center; margin-top: 40px; font-style: italic; color: var(--text-secondary); }

/* --- About & Footer --- */
.about { text-align: center; background: rgba(0,0,0,0.1); }
.author-links { margin-top: 30px; display: flex; justify-content: center; gap: 20px; }
.footer { padding: 30px 0; text-align: center; border-top: 1px solid var(--border-color); background: var(--bg-secondary); }
.footer p { font-size: 0.9rem; color: var(--text-secondary); }

/* --- Image Modal --- */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.9);
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s;
}
.modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90vh;
    animation: zoomIn 0.3s;
}
.modal-close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}
.modal-close:hover,
.modal-close:focus {
    color: #bbb;
    text-decoration: none;
}
@keyframes fadeIn { from { opacity: 0 } to { opacity: 1 } }
@keyframes zoomIn { from { transform: scale(0.8) } to { transform: scale(1) } }

/* --- Responsive --- */
@media (max-width: 900px) {
    .navbar nav { display: none; } /* Hide nav on mobile for simplicity */
}
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    .feature-detailed { grid-template-columns: 1fr; }
}