/* 
   IP TOOLS - EXPERT WEB TOOLS
   Theme: 2025 Glassmorphism (High Contrast)
*/

/* --- Fonts --- */
@font-face { font-family: 'Inter'; src: url('/fonts/inter-v20-latin-regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Orbitron'; src: url('/fonts/orbitron-v35-latin-700.woff2') format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: 'Roboto Mono'; src: url('/fonts/roboto-mono-v31-latin-regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }

:root {
    --bg-dark: #0a0a0f;
    --primary-accent: #3b82f6;
    --secondary-accent: #8b5cf6;
    --text-main: #ffffff;
    --text-muted: #94a3b8;
    --card-bg: rgba(25, 25, 35, 0.6);
    --card-border: rgba(255, 255, 255, 0.08);
    --input-bg: rgba(255, 255, 255, 0.05);
    
    /* Contrast Fixes */
    --link-color: #60a5fa; 
    --code-bg: rgba(0, 0, 0, 0.3);
    
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-code: 'Roboto Mono', monospace;
}

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

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

.background-glow {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(59, 130, 246, 0.08) 0%, rgba(10, 10, 15, 0) 50%);
    z-index: -1;
    pointer-events: none;
}

/* --- Header --- */
.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}
.back-btn {
    color: var(--text-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s;
}
.back-btn:hover { color: var(--primary-accent); }
.logo { font-family: var(--font-heading); font-size: 1.2rem; }
.logo span { color: var(--primary-accent); }

/* --- Main Layout --- */
.main-content {
    flex-grow: 1;
    padding: 2rem 5%;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

.tool-container {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.tool-intro { text-align: center; margin-bottom: 2rem; }
.tool-intro h1 { font-family: var(--font-heading); margin-bottom: 0.5rem; font-size: 2rem; }
.tool-intro p { color: var(--text-muted); }

/* --- Tabs --- */
.tabs-nav {
    display: flex;
    gap: 10px;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 1rem;
    overflow-x: auto;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 10px 20px;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s;
    white-space: nowrap;
}
.tab-btn:hover { color: #fff; background: rgba(255,255,255,0.05); }
.tab-btn.active { background: var(--primary-accent); color: #fff; }

/* --- Tool Panes --- */
.tool-pane { display: none; animation: fadeIn 0.3s ease; }
.tool-pane.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* 1. IP Sorter Styles */
.pane-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.input-area, .output-area { display: flex; flex-direction: column; }
.area-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
.area-header label { font-size: 0.9rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }

.badge { background: rgba(255,255,255,0.1); padding: 2px 8px; border-radius: 4px; font-size: 0.8rem; }

textarea {
    flex: 1;
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    color: #fff;
    padding: 1rem;
    border-radius: 8px;
    font-family: var(--font-code);
    font-size: 0.9rem;
    resize: none;
    min-height: 300px;
    outline: none;
}
textarea:focus { border-color: var(--primary-accent); }

.controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 1rem;
}

.tool-btn {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-muted);
    padding: 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}
.tool-btn:hover { border-color: var(--primary-accent); color: var(--primary-accent); }
.tool-btn.danger:hover { border-color: #ef4444; color: #ef4444; }

.icon-btn { background: transparent; border: none; color: var(--text-muted); cursor: pointer; transition: color 0.2s; }
.icon-btn:hover { color: #fff; }

/* 2 & 3. Calculator Styles */
.calc-wrapper { max-width: 600px; margin: 0 auto; }
.input-group label { display: block; margin-bottom: 10px; color: var(--text-muted); }
.input-row { display: flex; gap: 10px; }
.input-row input {
    flex: 1;
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    padding: 12px 15px;
    border-radius: 8px;
    color: #fff;
    font-family: var(--font-code);
    outline: none;
}
.input-row input:focus { border-color: var(--primary-accent); }

.primary-btn {
    background: var(--primary-accent);
    color: #fff;
    border: none;
    padding: 0 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}
.primary-btn:hover { background: #2563eb; }

/* Result Tables */
.result-area {
    margin-top: 2rem;
    background: rgba(0,0,0,0.2);
    border-radius: 12px;
    border: 1px solid var(--card-border);
    overflow: hidden;
}
.result-area table { width: 100%; border-collapse: collapse; }
.result-area th, .result-area td {
    padding: 12px 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    text-align: left;
}
.result-area th { color: var(--text-muted); width: 40%; font-weight: 600; }
.result-area td { color: #fff; font-family: var(--font-code); word-break: break-all; }
.result-area tr:last-child th, .result-area tr:last-child td { border-bottom: none; }

/* Error Message */
.error-message {
    padding: 1rem;
    color: #f87171;
    text-align: center;
    background: rgba(239, 68, 68, 0.1);
}

.hidden { display: none !important; }

/* Info Section */
.info-section { margin-top: 4rem; padding: 0 1rem; }
.info-section h2 { font-family: var(--font-heading); margin-bottom: 2rem; color: var(--text-main); font-size: 1.5rem; text-align: center; }
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}
.info-grid h3 { color: var(--primary-accent); margin-bottom: 0.5rem; font-family: var(--font-heading); font-size: 1rem; }
.info-grid p { color: var(--text-muted); font-size: 0.9rem; }

footer { text-align: center; padding: 3rem 0; color: var(--text-muted); font-size: 0.9rem; border-top: 1px solid var(--card-border); margin-top: 3rem; }
footer a { color: #fff; text-decoration: none; }

@media (max-width: 768px) {
    .pane-grid { grid-template-columns: 1fr; }
    .input-row { flex-direction: column; }
    .primary-btn { width: 100%; padding: 12px; }
}