/* ===================================================================
   Vecta Compute — Light/Dark Theme System
   Default: light. Add class="dark" to <html> for dark mode.
   =================================================================== */

/* ----- CSS Custom Properties ----- */

:root {
    /* Backgrounds */
    --bg-body: #ffffff;
    --bg-nav: rgba(255, 255, 255, 0.82);
    --bg-lockdown: #fce4e4;

    /* Text */
    --text-primary: #111827;
    --text-secondary: #374151;
    --text-muted: #6b7280;
    --text-faint: #9ca3af;
    --text-footer: #9ca3af;

    /* Borders */
    --border-nav: rgba(0, 0, 0, 0.07);
    --border-subtle: rgba(0, 0, 0, 0.06);

    /* Glass card */
    --glass-bg: rgba(0, 0, 0, 0.025);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-hover-border: rgba(59, 130, 246, 0.4);
    --glass-hover-bg: rgba(0, 0, 0, 0.045);

    /* Flat card (transparent) */
    --flat-text-hover: #374151;
    --flat-accent-opacity: 0.5;

    /* CTA buttons */
    --cta-bg: #111827;
    --cta-text: #ffffff;
    --cta-hover-bg: #1f2937;

    /* Text gradient (hero headings) */
    --gradient-start: #111827;
    --gradient-end: rgba(17, 24, 39, 0.3);

    /* Canvas particles */
    --canvas-particle: rgba(0, 0, 0, 0.13);
    --canvas-line: rgba(59, 130, 246, 0.06);

    /* Hero enhancements */
    --hero-glow: rgba(99, 102, 241, 0.07);
    --hero-glow-size: 600px;
    --hero-ring-highlight: rgba(99, 102, 241, 0.4);
    --hero-headline-start: #10d1e0;
    --hero-headline-mid: #5b52ff;
    --hero-headline-end: #7b37c4;
    --hero-line-color: rgba(99, 102, 241, 0.7);
    --hero-cta-color: #6b7280;
    --hero-cta-hover-color: #4b5563;

    /* Blog article */
    --article-h2: #4f46e5;
    --article-h3: #1f2937;
    --article-body: #4b5563;
    --article-strong: #1f2937;
    --article-em: #374151;
    --article-link: #2563eb;
    --article-blockquote-border: rgba(139, 92, 246, 0.5);
    --article-blockquote-bg: rgba(139, 92, 246, 0.06);
    --article-blockquote-text: #374151;
    --article-th-bg: rgba(0, 0, 0, 0.04);
    --article-th-border: rgba(0, 0, 0, 0.1);
    --article-td-border: rgba(0, 0, 0, 0.06);
    --article-td-first: #1f2937;
    --article-td-second: #6b7280;
    --article-td-third: #059669;
    --callout-bg: rgba(59, 130, 246, 0.06);
    --callout-border: rgba(59, 130, 246, 0.2);
    --callout-heading: #2563eb;
    --callout-text: #4b5563;

    /* FAQ */
    --faq-summary-after: rgba(139, 92, 246, 0.6);
    --faq-answer: #4b5563;
    --faq-answer-link: #2563eb;
    --faq-answer-border: rgba(0, 0, 0, 0.06);

    /* Glasscard section-label accents (brand spectrum: cyan → blue → indigo → purple) */
    --gc-accent-cyan: #0e929e;
    --gc-accent-blue: #3562c4;
    --gc-accent-indigo: #4f46e5;
    --gc-accent-purple: #7b37c4;

    /* Section headings (index.html) */
    --sh-heading: #4f46e5;
    --sh-subheading: #6d4dab;

    /* Transition */
    --theme-transition: 0.35s ease;
}

html.dark {
    /* Backgrounds */
    --bg-body: #030303;
    --bg-nav: rgba(0, 0, 0, 0.2);
    --bg-lockdown: #1a0505;

    /* Text */
    --text-primary: #ffffff;
    --text-secondary: #e4e4e7;
    --text-muted: #a1a1aa;
    --text-faint: #71717a;
    --text-footer: #52525b;

    /* Borders */
    --border-nav: rgba(255, 255, 255, 0.05);
    --border-subtle: rgba(255, 255, 255, 0.05);

    /* Glass card */
    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-hover-border: rgba(59, 130, 246, 0.4);
    --glass-hover-bg: rgba(255, 255, 255, 0.04);

    /* Flat card (transparent) */
    --flat-text-hover: #d4d4d8;
    --flat-accent-opacity: 0.6;

    /* CTA buttons */
    --cta-bg: #ffffff;
    --cta-text: #000000;
    --cta-hover-bg: #e4e4e7;

    /* Text gradient */
    --gradient-start: #ffffff;
    --gradient-end: rgba(255, 255, 255, 0.3);

    /* Canvas particles */
    --canvas-particle: rgba(255, 255, 255, 0.3);
    --canvas-line: rgba(59, 130, 246, 0.08);

    /* Hero enhancements */
    --hero-glow: rgba(99, 102, 241, 0.12);
    --hero-glow-size: 600px;
    --hero-ring-highlight: rgba(139, 92, 246, 0.4);
    --hero-headline-start: #3ee8f5;
    --hero-headline-mid: #8b7aff;
    --hero-headline-end: #a35de6;
    --hero-line-color: rgba(139, 92, 246, 0.8);
    --hero-cta-color: #71717a;
    --hero-cta-hover-color: #a1a1aa;

    /* Blog article */
    --article-h2: #b8a5f8;
    --article-h3: #e4e4e7;
    --article-body: #a1a1aa;
    --article-strong: #e4e4e7;
    --article-em: #d4d4d8;
    --article-link: #93c5fd;
    --article-blockquote-border: rgba(139, 92, 246, 0.5);
    --article-blockquote-bg: rgba(139, 92, 246, 0.05);
    --article-blockquote-text: #d4d4d8;
    --article-th-bg: rgba(255, 255, 255, 0.06);
    --article-th-border: rgba(255, 255, 255, 0.1);
    --article-td-border: rgba(255, 255, 255, 0.05);
    --article-td-first: #d4d4d8;
    --article-td-second: #71717a;
    --article-td-third: #86efac;
    --callout-bg: rgba(59, 130, 246, 0.05);
    --callout-border: rgba(59, 130, 246, 0.2);
    --callout-heading: #93c5fd;
    --callout-text: #a1a1aa;

    /* FAQ */
    --faq-summary-after: rgba(167, 139, 250, 0.6);
    --faq-answer: #a1a1aa;
    --faq-answer-link: #93c5fd;
    --faq-answer-border: rgba(255, 255, 255, 0.05);

    /* Glasscard section-label accents (brand spectrum) */
    --gc-accent-cyan: #3ee8f5;
    --gc-accent-blue: #6da0ff;
    --gc-accent-indigo: #8b7aff;
    --gc-accent-purple: #a35de6;

    /* Section headings (index.html) */
    --sh-heading: #b8a5f8;
    --sh-subheading: #b99bea;

    --theme-transition: 0.35s ease;
}


/* ----- Base element theming ----- */

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    transition: background-color var(--theme-transition), color var(--theme-transition);
}


/* ----- Tailwind utility overrides for light mode ----- */
/* Specificity: html:not(.dark) .class (0,2,1) > Tailwind's .class (0,1,0) */

/* Text colors */
html:not(.dark) h1,
html:not(.dark) h2 {
    color: var(--text-primary);
    -webkit-text-fill-color: var(--text-primary);
}

html:not(.dark) h3 {
    color: var(--sh-subheading);
    -webkit-text-fill-color: var(--sh-subheading);
}

html.dark h3 {
    color: var(--sh-subheading);
    -webkit-text-fill-color: var(--sh-subheading);
}

html:not(.dark) .text-gradient,
html:not(.dark) .hero-headline,
html:not(.dark) .brand-gradient,
html:not(.dark) .sh,
html:not(.dark) .article h2 {
    -webkit-text-fill-color: transparent;
}

html:not(.dark) .text-zinc-200 { color: #374151; }
html:not(.dark) .text-zinc-400 { color: #6b7280; }
html:not(.dark) .text-zinc-500 { color: #4b5563; }
html:not(.dark) .text-zinc-600 { color: #6b7280; }

/* Nav & border overrides */
html:not(.dark) .border-white\/5 { border-color: var(--border-nav); }
html:not(.dark) .bg-black\/20 { background-color: var(--bg-nav); }

/* Buttons / CTA */
html:not(.dark) nav .bg-white:not(.cta-gradient),
html:not(.dark) .cta-button:not(.cta-gradient) {
    background-color: var(--cta-bg);
    color: var(--cta-text);
}
html:not(.dark) nav .bg-white:not(.cta-gradient):hover,
html:not(.dark) .cta-button:not(.cta-gradient):hover {
    background-color: var(--cta-hover-bg);
}

html:not(.dark) section .bg-white:not(.cta-gradient) {
    background-color: var(--cta-bg);
    color: var(--cta-text);
}
html:not(.dark) section .bg-white:not(.cta-gradient):hover {
    background-color: var(--cta-hover-bg);
}

/* Nav link hover */
html:not(.dark) .hover\:text-white:hover { color: var(--text-primary); }

/* Footer */
html:not(.dark) footer { border-color: var(--border-nav); color: var(--text-faint); }

/* Status text overrides on index */
html:not(.dark) .text-blue-300 { color: #2563eb; }


/* ----- Shared component styles using variables ----- */

.text-gradient {
    background: linear-gradient(to bottom, var(--gradient-start) 0%, var(--gradient-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: none;
    transition: all 0.3s ease;
}
.glass-card:hover {
    box-shadow: 0 4px 24px rgba(59, 130, 246, 0.12);
    background: var(--glass-hover-bg);
}

/* Flat (transparent) card variant */
.glass-card-flat {
    background: transparent;
    backdrop-filter: none;
    border: 1px solid transparent;
    border-left: 2px solid transparent;
    padding-left: calc(var(--flat-pl, 40px) - 1px); /* compensate for border */
    transition: border-color 0.3s ease, background 0.3s ease;
}
.glass-card-flat:hover {
    border-left-color: var(--flat-accent, rgba(59, 130, 246, 0.5));
}
.glass-card-flat .text-zinc-400,
.glass-card-flat .text-zinc-500,
.glass-card-flat p:not(.section-label) {
    transition: color 0.3s ease;
}
.glass-card-flat:hover .text-zinc-400,
.glass-card-flat:hover .text-zinc-500 {
    color: var(--flat-text-hover);
}

#workflowCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.3;
    pointer-events: none;
}

/* ----- Hero enhancements ----- */

html {
    scroll-behavior: smooth;
}

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: var(--hero-glow-size);
    height: var(--hero-glow-size);
    background: radial-gradient(circle, var(--hero-glow) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

@property --headline-angle {
    syntax: '<angle>';
    inherits: false;
    initial-value: 0deg;
}

.hero-headline {
    --headline-angle: 0deg;
    background: linear-gradient(var(--headline-angle), var(--hero-headline-start) 0%, var(--hero-headline-mid) 50%, var(--hero-headline-end) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: headline-angle-rotate 20s linear infinite;
}

@keyframes headline-angle-rotate {
    from { --headline-angle: 0deg; }
    to   { --headline-angle: 360deg; }
}


/* Brand name gradient with shimmer */
.brand-gradient {
    background: linear-gradient(
        90deg,
        var(--hero-headline-start) 0%,
        var(--hero-headline-mid) 25%,
        var(--hero-headline-end) 50%,
        var(--hero-headline-mid) 75%,
        var(--hero-headline-start) 100%
    );
    background-size: 200% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: brand-shimmer 8s linear infinite;
}

@keyframes brand-shimmer {
    0%   { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

/* CTA gradient background button */
.cta-gradient {
    position: relative;
    z-index: 0;
    background-color: transparent !important;
    background-image: linear-gradient(
        90deg,
        var(--hero-headline-start) 0%,
        var(--hero-headline-mid) 25%,
        var(--hero-headline-end) 50%,
        var(--hero-headline-mid) 75%,
        var(--hero-headline-start) 100%
    ) !important;
    background-size: 200% 100% !important;
    animation: brand-shimmer 8s linear infinite;
    color: #ffffff !important;
    -webkit-text-fill-color: #ffffff;
}

.cta-gradient::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: var(--bg-body);
    opacity: 0.35;
    z-index: -1;
    transition: opacity 0.2s;
    pointer-events: none;
}

.cta-gradient:hover::after {
    opacity: 0;
}

@keyframes hero-ring-rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to   { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: conic-gradient(
        from 0deg,
        transparent 0deg,
        var(--hero-ring-highlight) 40deg,
        transparent 120deg,
        transparent 360deg
    );
    -webkit-mask: radial-gradient(circle, transparent 46%, black 47%, black 50%, transparent 51%);
    mask: radial-gradient(circle, transparent 46%, black 47%, black 50%, transparent 51%);
    animation: hero-ring-rotate 25s linear infinite;
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
}

.hero-line {
    width: 100%;
    max-width: 520px;
    height: 2px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(to right, transparent 0%, var(--hero-line-color) 30%, var(--hero-line-color) 70%, transparent 100%);
    border-radius: 1px;
    pointer-events: none;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 700;
    font-size: 10px;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--hero-cta-color);
    text-decoration: none;
    transition: color 0.3s ease;
    position: relative;
    z-index: 1;
}

.hero-cta:hover {
    color: var(--hero-cta-hover-color);
}

.hero-cta-arrow {
    transition: transform 0.3s ease;
}

.hero-cta:hover .hero-cta-arrow {
    transform: translateY(3px);
}

@media (max-width: 640px) {
    .hero-glow {
        --hero-glow-size: 350px;
    }
    .hero-ring {
        width: 280px;
        height: 280px;
    }
}

.section-label {
    font-weight: 700;
    font-size: 10px;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

/* Section heading colors (index.html only) */
html h2.sh {
    background: linear-gradient(
        90deg,
        var(--hero-headline-start) 0%,
        var(--hero-headline-mid)   25%,
        var(--hero-headline-end)   50%,
        var(--hero-headline-mid)   75%,
        var(--hero-headline-start) 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--sh-heading); /* fallback for older browsers */
    opacity: 0.9;
    padding-bottom: 0.15em; /* room for descenders (y, g, p) clipped by background-clip: text */
}

/* Kill switch (index.html) */
.lockdown-active { background-color: var(--bg-lockdown) !important; }
.red-glow { box-shadow: 0 0 50px rgba(239, 68, 68, 0.2); border-color: rgba(239, 68, 68, 0.5) !important; }


/* Article cross-links */
.sh-link { color: var(--sh-subheading); -webkit-text-fill-color: var(--sh-subheading); }

/* ----- Blog article typography ----- */

html .article h2 {
    font-size: 28px; font-weight: 900; margin: 48px 0 16px; letter-spacing: -0.02em;
    background: linear-gradient(
        90deg,
        var(--hero-headline-start) 0%,
        var(--hero-headline-mid)   25%,
        var(--hero-headline-end)   50%,
        var(--hero-headline-mid)   75%,
        var(--hero-headline-start) 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--article-h2); /* fallback */
    padding-bottom: 0.15em;
}
html .article h3 { font-size: 22px; font-weight: 700; margin: 36px 0 12px; color: var(--article-h3); -webkit-text-fill-color: var(--article-h3); }
.article p { color: var(--article-body); font-size: 17px; line-height: 1.8; margin: 0 0 20px; }
.article ul, .article ol { color: var(--article-body); font-size: 17px; line-height: 1.8; padding-left: 24px; margin: 0 0 20px; }
.article li { margin-bottom: 10px; }
.article strong { color: var(--article-strong); }
.article em { color: var(--article-em); }
.article a { color: var(--article-link); text-decoration: underline; }
.article blockquote {
    border-left: 4px solid var(--article-blockquote-border);
    margin: 28px 0;
    padding: 20px 28px;
    background: var(--article-blockquote-bg);
    border-radius: 0 16px 16px 0;
}
.article blockquote p { margin: 0; color: var(--article-blockquote-text); }

.article table { width: 100%; border-collapse: collapse; margin: 28px 0; border-radius: 16px; overflow: hidden; }
.article th { background: var(--article-th-bg); color: var(--text-primary); font-weight: 700; padding: 14px 18px; text-align: left; font-size: 14px; border-bottom: 1px solid var(--article-th-border); }
.article td { padding: 14px 18px; font-size: 15px; border-bottom: 1px solid var(--article-td-border); }
.article td:first-child { font-weight: 600; color: var(--article-td-first); }
.article td:nth-child(2) { color: var(--article-td-second); }
.article td:nth-child(3) { color: var(--article-td-third); }

.callout {
    background: var(--callout-bg);
    border: 1px solid var(--callout-border);
    border-radius: 16px;
    padding: 28px;
    margin: 32px 0;
}
.callout h4 { margin: 0 0 8px; font-size: 17px; color: var(--callout-heading); font-weight: 700; }
.callout p { margin: 0; font-size: 16px; color: var(--callout-text); line-height: 1.7; }


/* ----- FAQ styles ----- */

details.faq-item { margin-bottom: 6px; }
details.faq-item summary {
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
}
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary::after {
    content: '+';
    font-size: 22px;
    color: var(--faq-summary-after);
    font-weight: 400;
    flex-shrink: 0;
    margin-left: 16px;
}
details.faq-item[open] summary::after { content: '\2212'; }
details.faq-item .answer {
    color: var(--faq-answer);
    font-size: 16px;
    line-height: 1.7;
    padding: 0 24px 20px;
    border-top: 1px solid var(--faq-answer-border);
}
details.faq-item .answer a { color: var(--faq-answer-link); text-decoration: underline; }


/* ----- Breach Tracker ----- */

.breach-filter-btn {
    padding: 6px 16px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: 1px solid var(--glass-border);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}
.breach-filter-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}
.breach-filter-btn.active {
    background: var(--text-primary);
    color: var(--bg-body);
    border-color: var(--text-primary);
}

.category-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 9999px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border: 1px solid;
}


/* ----- Theme Toggle ----- */

.theme-toggle {
    position: relative;
    width: 52px;
    height: 28px;
    border-radius: 9999px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    transition: background var(--theme-transition), border-color var(--theme-transition);
    flex-shrink: 0;
}
.theme-toggle:hover {
    border-color: var(--glass-hover-border);
}

.toggle-thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    border-radius: 9999px;
    background: var(--text-primary);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

html.dark .toggle-thumb {
    transform: translateX(24px);
}

.sun-icon, .moon-icon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
    transition: opacity 0.25s ease;
    pointer-events: none;
}

.sun-icon {
    left: 6px;
    color: #f59e0b;
    opacity: 1;
}
.moon-icon {
    right: 6px;
    color: #a1a1aa;
    opacity: 0.4;
}

html.dark .sun-icon {
    opacity: 0.4;
}
html.dark .moon-icon {
    color: #fbbf24;
    opacity: 1;
}
