/* IP Calculator - Blueprint Technical Schematic Styling */

@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@500;600;700&family=Inconsolata:wght@600;700&display=swap');

:root {
    --bg-dark: #0a4b78;
    --bg-light: #1e5a8e;
    --primary-text: #e8f4ff;
    --accent-cyan: #00d9ff;
    --accent-dark: #0088cc;
    --input-bg: rgba(0,0,0,0.3);
    --result-bg: rgba(0,0,0,0.2);
    --border-subtle: rgba(232,244,255,0.2);
    --container-bg: rgba(10,75,120,0.3);
}

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

html, body {
    overflow-x: hidden;
}

body {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 500;
    line-height: 1.6;
    color: var(--primary-text);
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-light) 100%);
    background-attachment: fixed;
    position: relative;
}

/* Grid Overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(232,244,255,0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(232,244,255,0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
    z-index: 0;
}

/* Screen Corner Markers */
.corner-marker {
    position: fixed;
    width: 60px;
    height: 60px;
    border: 3px solid rgba(255,255,255,0.3);
    pointer-events: none;
    z-index: 1;
}

.corner-marker.top-left {
    top: 20px;
    left: 20px;
    border-right: none;
    border-bottom: none;
}

.corner-marker.top-right {
    top: 20px;
    right: 20px;
    border-left: none;
    border-bottom: none;
}

.corner-marker.bottom-left {
    bottom: 20px;
    left: 20px;
    border-right: none;
    border-top: none;
}

.corner-marker.bottom-right {
    bottom: 20px;
    right: 20px;
    border-left: none;
    border-top: none;
}

/* Main Container */
.container {
    position: relative;
    max-width: 800px;
    margin: 40px auto;
    padding: 40px;
    background: var(--container-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 2px solid var(--primary-text);
    z-index: 2;
}

/* Cyan Corner Brackets */
.container::before,
.container::after {
    content: '';
    position: absolute;
    width: 30px;
    height: 30px;
    border: 4px solid var(--accent-cyan);
    pointer-events: none;
}

.container::before {
    top: -4px;
    left: -4px;
    border-right: none;
    border-bottom: none;
}

.container::after {
    bottom: -4px;
    right: -4px;
    border-left: none;
    border-top: none;
}

.bracket-tr,
.bracket-bl {
    position: absolute;
    width: 30px;
    height: 30px;
    border: 4px solid var(--accent-cyan);
    pointer-events: none;
}

.bracket-tr {
    top: -4px;
    right: -4px;
    border-left: none;
    border-bottom: none;
}

.bracket-bl {
    bottom: -4px;
    left: -4px;
    border-right: none;
    border-top: none;
}

/* Header */
header {
    margin-bottom: 40px;
    text-align: center;
}

h1 {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: 3.5rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--primary-text);
    text-shadow: 0 0 20px rgba(0,217,255,0.5);
    margin-bottom: 5px;
}

.subtitle {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    opacity: 0.7;
}

h2 {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent-cyan);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-subtle);
}

/* Form Styling */
.input-section {
    margin-bottom: 30px;
}

.form-group {
    position: relative;
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 8px;
    opacity: 0.9;
}

.form-group .input-wrapper {
    position: relative;
}

.form-group .input-tag {
    position: absolute;
    top: -8px;
    right: 10px;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--accent-cyan);
    background: var(--bg-dark);
    padding: 2px 8px;
    z-index: 1;
}

.form-group input {
    width: 100%;
    padding: 1rem;
    font-family: 'Inconsolata', monospace;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-text);
    background: var(--input-bg);
    border: 1px solid var(--primary-text);
    transition: all 0.3s ease;
}

.form-group input::placeholder {
    color: rgba(232,244,255,0.4);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0,217,255,0.3);
}

.form-group small {
    display: block;
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    opacity: 0.6;
    margin-top: 6px;
}

/* Button */
.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

button {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    padding: 1.25rem 2rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

button[type="submit"] {
    flex: 1;
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-dark) 100%);
    border-color: var(--accent-cyan);
    color: var(--bg-dark);
    box-shadow: 0 4px 20px rgba(0,217,255,0.3);
}

button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0,217,255,0.5);
}

button[type="button"] {
    background: transparent;
    border-color: var(--border-subtle);
    color: var(--primary-text);
}

button[type="button"]:hover {
    border-color: var(--primary-text);
    background: rgba(232,244,255,0.1);
}

/* Error Message */
.error-message {
    background: rgba(255,60,60,0.2);
    border: 1px solid #ff3c3c;
    color: #ff6b6b;
    padding: 15px;
    margin-bottom: 20px;
    font-family: 'Inconsolata', monospace;
    font-weight: 600;
}

/* Results Section */
.results-section {
    margin-bottom: 30px;
    animation: slideDown 0.5s cubic-bezier(0.16,1,0.3,1);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.result-box {
    padding: 1rem;
    background: var(--result-bg);
    border: 1px solid var(--border-subtle);
    animation: fadeIn 0.4s cubic-bezier(0.16,1,0.3,1) backwards;
}

.result-box:nth-child(1) { animation-delay: 0.05s; }
.result-box:nth-child(2) { animation-delay: 0.10s; }
.result-box:nth-child(3) { animation-delay: 0.15s; }
.result-box:nth-child(4) { animation-delay: 0.20s; }
.result-box:nth-child(5) { animation-delay: 0.25s; }
.result-box:nth-child(6) { animation-delay: 0.30s; }
.result-box:nth-child(7) { animation-delay: 0.35s; }
.result-box:nth-child(8) { animation-delay: 0.40s; }
.result-box:nth-child(9) { animation-delay: 0.45s; }
.result-box:nth-child(10) { animation-delay: 0.50s; }

.result-box.full-width {
    grid-column: 1 / -1;
}

.result-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    opacity: 0.9;
    margin-bottom: 5px;
}

.result-value-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
}

.result-value {
    font-family: 'Inconsolata', monospace;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-cyan);
    word-break: break-all;
    flex: 1;
}

.result-value.small {
    font-size: 0.95rem;
}

/* Optional Badge */
.optional-badge {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--bg-dark);
    background: rgba(0,217,255,0.4);
    padding: 2px 6px;
    border-radius: 3px;
    margin-left: 8px;
    vertical-align: middle;
}

/* Copy Button - Subtle Style (override general button) */
button.copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    min-width: 16px;
    min-height: 16px;
    padding: 0;
    margin: 0;
    background: transparent;
    border: none;
    border-radius: 0;
    cursor: pointer;
    opacity: 0.25;
    transition: opacity 0.15s ease;
    flex-shrink: 0;
    font-size: 0;
    letter-spacing: 0;
    text-transform: none;
    box-shadow: none;
}

button.copy-btn:hover {
    opacity: 0.7;
    transform: none;
    background: transparent;
    box-shadow: none;
}

button.copy-btn.copied {
    opacity: 1;
}

button.copy-btn svg {
    width: 11px;
    height: 11px;
    flex-shrink: 0;
}

button.copy-btn .copy-icon {
    color: var(--primary-text);
}

button.copy-btn .check-icon {
    display: none;
    color: #4ade80;
}

button.copy-btn.copied .copy-icon {
    display: none;
}

button.copy-btn.copied .check-icon {
    display: block;
}

button.copy-btn.copy-btn-sm {
    width: 14px;
    height: 14px;
    min-width: 14px;
    min-height: 14px;
}

button.copy-btn.copy-btn-sm svg {
    width: 9px;
    height: 9px;
}

/* Binary Display */
.binary-section {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
}

.binary-row {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    padding: 8px 12px;
    background: var(--result-bg);
    border: 1px solid var(--border-subtle);
    gap: 10px;
}

.binary-row .label {
    width: 90px;
    flex-shrink: 0;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0.9;
}

.binary-row .value {
    flex: 1;
    font-family: 'Inconsolata', monospace;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.binary-row .copy-btn {
    flex-shrink: 0;
}

.binary-row .value .dot {
    color: rgba(232,244,255,0.3);
}

.binary-row .value .net-bit {
    color: var(--accent-cyan);
}

.binary-row .value .host-bit {
    color: #4ade80;
}

/* Binary Legend */
.binary-legend {
    margin-top: 15px;
    padding: 12px;
    background: var(--result-bg);
    border: 1px solid var(--border-subtle);
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
}

.binary-legend .network-bits {
    color: var(--accent-cyan);
}

.binary-legend .host-bits {
    color: #4ade80;
}

.binary-legend .separator-text {
    color: rgba(232,244,255,0.4);
    margin: 0 15px;
}

/* Subnets Section */
.subnets-section {
    margin-top: 30px;
    animation: slideDown 0.5s cubic-bezier(0.16,1,0.3,1);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 15px;
}

.section-header h2 {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

/* Export Button */
.export-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    font-family: 'Rajdhani', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--primary-text);
    background: transparent;
    border: 1px solid var(--accent-cyan);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.export-btn:hover {
    background: rgba(0,217,255,0.15);
    box-shadow: 0 0 15px rgba(0,217,255,0.3);
}

.export-btn:active {
    transform: scale(0.98);
}

.export-btn svg {
    width: 16px;
    height: 16px;
    color: var(--accent-cyan);
}

#subnet-summary {
    font-size: 0.9rem;
    margin-bottom: 15px;
    opacity: 0.9;
}

.subnets-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.subnets-table th,
.subnets-table td {
    padding: 10px 12px;
    text-align: left;
    border: 1px solid var(--border-subtle);
}

.subnets-table th {
    background: rgba(0,217,255,0.15);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-size: 0.75rem;
}

.subnets-table tbody tr:hover {
    background: rgba(0,217,255,0.1);
}

.subnets-table td {
    font-family: 'Inconsolata', monospace;
    font-weight: 600;
    color: var(--accent-cyan);
}

.subnets-table .truncated {
    text-align: center;
    color: var(--primary-text);
    opacity: 0.6;
    font-style: italic;
    font-family: 'Rajdhani', sans-serif;
}

/* Footer */
footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
}

.footer-stats {
    display: flex;
    align-items: center;
}

.hit-counter {
    font-family: 'Inconsolata', monospace;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--primary-text);
    opacity: 0.5;
}

.hit-counter #hit-count {
    color: var(--accent-cyan);
    opacity: 1;
}

.footer-branding {
    display: flex;
    align-items: center;
    gap: 8px;
}

.powered-by {
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    opacity: 0.5;
}

.veetech-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    color: var(--primary-text);
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.veetech-link:hover {
    background: rgba(255, 215, 0, 0.1);
}

.veetech-link:hover .veetech-text {
    color: #ffd700;
}

.veetech-logo {
    height: 20px;
    width: auto;
    border-radius: 3px;
    opacity: 0.9;
}

.veetech-text {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    transition: color 0.2s ease;
}

/* Slash Button for Mobile - Hidden on desktop, visible on touch devices */
.slash-btn {
    display: none;
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    padding: 0;
    font-family: 'Inconsolata', monospace;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-cyan);
    background: rgba(0, 217, 255, 0.15);
    border: 1px solid var(--accent-cyan);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    letter-spacing: 0;
    text-transform: none;
}

.slash-btn:hover,
.slash-btn:active {
    background: rgba(0, 217, 255, 0.3);
}

/* Show slash button on touch devices */
@media (hover: none) and (pointer: coarse) {
    .slash-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .form-group input {
        padding-right: 50px;
    }
}

/* Responsive */
@media (max-width: 700px) {
    body {
        padding: 10px;
    }

    .container {
        margin: 20px auto;
        padding: 25px;
    }

    h1 {
        font-size: 2rem;
        letter-spacing: 0.1em;
    }

    .results-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .form-actions {
        flex-direction: column;
    }

    button {
        width: 100%;
    }

    .binary-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .binary-row .label {
        margin-bottom: 5px;
    }

    .binary-row .value {
        font-size: 0.85rem;
        word-break: break-all;
    }

    .corner-marker {
        width: 40px;
        height: 40px;
    }
}