/*
 * PMA Labs - Shared Theme Styles
 * ================================
 * Common styles used across all pages
 *
 * Usage: <link rel="stylesheet" href="css/pma-theme.css">
 */

/* ===== CSS Custom Properties ===== */
:root {
    /* Background gradient colors */
    --pma-bg-start: #6b7b8a;
    --pma-bg-mid1: #8b7b7a;
    --pma-bg-mid2: #7a6b7a;
    --pma-bg-end: #4a5568;

    /* Text colors */
    --pma-text: rgba(255, 255, 255, 0.5);
    --pma-text-medium: rgba(255, 255, 255, 0.6);
    --pma-text-bright: rgba(255, 255, 255, 0.85);

    /* Accent colors */
    --pma-accent-cyan: #00aaff;
    --pma-accent-orange: #ff8800;
    --pma-accent-red: #ff0000;
    --pma-accent-red-soft: rgba(255, 100, 100, 0.7);

    /* Card styling */
    --pma-card-radius: 14px;
    --pma-card-radius-sm: 12px;
    --pma-card-depth: 8px;

    /* Navigation */
    --pma-nav-height: 50px;
    --pma-nav-font-size: 0.7rem;
    --pma-nav-letter-spacing: 0.15em;

    /* Transitions */
    --pma-transition-fast: 0.2s ease;
    --pma-transition-medium: 0.3s ease;
    --pma-transition-slow: 0.5s ease;
}


/* ===== Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    min-height: 100vh;
    background: linear-gradient(180deg,
        var(--pma-bg-start) 0%,
        var(--pma-bg-mid1) 35%,
        var(--pma-bg-mid2) 65%,
        var(--pma-bg-end) 100%);
    background-attachment: fixed;
    color: #ffffff;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;

    /* Prevent text selection on interactive pages */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
    -webkit-tap-highlight-color: transparent;
}


/* ===== Scanline Overlay ===== */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 255, 136, 0.03) 0px,
        transparent 1px,
        transparent 2px,
        rgba(0, 255, 136, 0.03) 3px
    );
    pointer-events: none;
    z-index: 1000;
}


/* ===== Vignette Overlay ===== */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0, 0, 0, 0.5) 100%);
    pointer-events: none;
    z-index: 999;
}


/* ===== Simple Navigation (index, contact, disclaimer, lisp-routines) ===== */
.tagline {
    position: fixed;
    top: 20px;
    left: 24px;
    font-size: var(--pma-nav-font-size);
    letter-spacing: var(--pma-nav-letter-spacing);
    text-transform: uppercase;
    color: var(--pma-text);
    text-decoration: none;
    z-index: 10;
    transition: color var(--pma-transition-fast), transform var(--pma-transition-medium), opacity var(--pma-transition-medium);
}

.tagline:hover {
    color: var(--pma-text-bright);
}

.tagline.nav-hidden {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
}

.nav-links {
    position: fixed;
    top: 20px;
    right: 24px;
    display: flex;
    gap: 24px;
    z-index: 10;
    transition: transform var(--pma-transition-medium), opacity var(--pma-transition-medium);
}

.nav-links.nav-hidden {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
}

.nav-links a {
    font-size: var(--pma-nav-font-size);
    letter-spacing: var(--pma-nav-letter-spacing);
    text-transform: uppercase;
    text-decoration: none;
    padding: 6px 10px;
    border: 1px solid transparent;
    transition: background-position var(--pma-transition-slow), border-color var(--pma-transition-medium);
}


/* ===== PMA Nav Bar (calculators, sudoku) ===== */
.pma-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--pma-nav-height);
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 9999;
    background: linear-gradient(180deg,
        rgba(107, 123, 138, 0.9) 0%,
        rgba(107, 123, 138, 0) 100%);
    pointer-events: none;
    transition: transform var(--pma-transition-medium), opacity var(--pma-transition-medium);
}

.pma-nav.nav-hidden {
    transform: translateY(-100%);
    opacity: 0;
}

.pma-nav-link {
    font-size: var(--pma-nav-font-size);
    letter-spacing: var(--pma-nav-letter-spacing);
    text-transform: uppercase;
    text-decoration: none;
    pointer-events: auto;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    padding: 6px 10px;
    border: 1px solid transparent;
    transition: background-position var(--pma-transition-slow), border-color var(--pma-transition-medium);
}

.pma-nav-right {
    display: flex;
    gap: 24px;
}


/* ===== Contact Link - Rainbow Holographic ===== */
.nav-links a[href="contact.html"],
.pma-nav-link[href="contact.html"] {
    font-weight: bold;
    color: var(--pma-text-medium);
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.6) 0%,
        rgba(255, 255, 255, 0.6) 40%,
        rgba(255, 0, 132, 0.9) 45%,
        rgba(255, 255, 0, 0.9) 50%,
        rgba(0, 255, 138, 0.9) 55%,
        rgba(0, 207, 255, 0.9) 60%,
        rgba(255, 255, 255, 0.6) 65%,
        rgba(255, 255, 255, 0.6) 100%
    );
    background-size: 300% 100%;
    background-position: 100% 0;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links a[href="contact.html"]:hover,
.pma-nav-link[href="contact.html"]:hover {
    background-position: 0% 0;
    border-color: rgba(255, 255, 255, 0.4);
}


/* ===== Disclaimer Link - Red Holographic ===== */
.nav-links a[href="disclaimer.html"],
.pma-nav-link[href="disclaimer.html"] {
    font-weight: bold;
    color: var(--pma-accent-red-soft);
    background: linear-gradient(
        90deg,
        rgba(255, 100, 100, 0.7) 0%,
        rgba(255, 100, 100, 0.7) 40%,
        rgba(255, 0, 0, 1) 45%,
        rgba(255, 150, 50, 0.9) 50%,
        rgba(255, 0, 0, 1) 55%,
        rgba(255, 50, 50, 0.9) 60%,
        rgba(255, 100, 100, 0.7) 65%,
        rgba(255, 100, 100, 0.7) 100%
    );
    background-size: 300% 100%;
    background-position: 100% 0;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links a[href="disclaimer.html"]:hover,
.pma-nav-link[href="disclaimer.html"]:hover {
    background-position: 0% 0;
    border-color: rgba(255, 100, 100, 0.5);
}


/* ===== Holographic Card Base ===== */
.holo-card {
    position: relative;
    border-radius: var(--pma-card-radius);
    transform-style: preserve-3d;
    transition: none;
    will-change: transform;
}

.holo-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--pma-card-radius);
    background: linear-gradient(
        135deg,
        rgba(255, 0, 100, 0.3) 0%,
        rgba(255, 200, 0, 0.3) 25%,
        rgba(0, 255, 150, 0.3) 50%,
        rgba(0, 150, 255, 0.3) 75%,
        rgba(255, 0, 100, 0.3) 100%
    );
    background-size: 200% 200%;
    mix-blend-mode: color-dodge;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    z-index: 2;
}

.holo-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--pma-card-radius);
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-size: 100px 100px;
    mix-blend-mode: overlay;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    z-index: 3;
}

.holo-card.hover-active::before,
.holo-card.hover-active::after {
    opacity: 0.6;
}


/* ===== 3D Card Edge ===== */
.card-edge {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--pma-card-radius);
    transform-style: preserve-3d;
    pointer-events: none;
}

.card-edge::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--pma-card-radius);
    background: linear-gradient(135deg, rgba(30, 30, 40, 0.6) 0%, rgba(10, 10, 15, 0.7) 100%);
    border: 1px solid rgba(0, 0, 0, 0.8);
    transform: translateZ(-8px);
}

.card-edge::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--pma-card-radius);
    background: linear-gradient(90deg,
        rgba(40, 40, 50, 0.5) 0%,
        rgba(15, 15, 20, 0.6) 50%,
        rgba(40, 40, 50, 0.5) 100%
    );
    border: 1px solid rgba(0, 0, 0, 0.6);
    transform: translateZ(-4px);
}

/* Smaller radius variant for lisp-routines cards */
.card-edge-sm {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--pma-card-radius-sm);
    transform-style: preserve-3d;
    pointer-events: none;
}

.card-edge-sm::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--pma-card-radius-sm);
    background: linear-gradient(135deg, rgba(30, 30, 40, 0.6) 0%, rgba(10, 10, 15, 0.7) 100%);
    border: 1px solid rgba(0, 0, 0, 0.8);
    transform: translateZ(-8px);
}

.card-edge-sm::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--pma-card-radius-sm);
    background: linear-gradient(90deg,
        rgba(40, 40, 50, 0.5) 0%,
        rgba(15, 15, 20, 0.6) 50%,
        rgba(40, 40, 50, 0.5) 100%
    );
    border: 1px solid rgba(0, 0, 0, 0.6);
    transform: translateZ(-4px);
}


/* ===== Card Inner Content ===== */
.card-inner {
    width: 100%;
    height: 100%;
    border-radius: var(--pma-card-radius);
    overflow: hidden;
    position: relative;
    z-index: 1;
    background: linear-gradient(145deg, #2a2a3a 0%, #1a1a24 100%);
}


/* ===== Input Transparency (for forms) ===== */
input, select, textarea, .project-select {
    background: rgba(26, 26, 26, 0.7) !important;
}

select option {
    background: #1a1a1a !important;
}


/* ===== Mobile Breakpoints ===== */
@media (max-width: 500px) {
    .tagline {
        left: 12px;
        font-size: 0.5rem;
        max-width: 45%;
    }

    .nav-links {
        right: 12px;
        gap: 8px;
    }

    .nav-links a {
        font-size: 0.55rem;
        letter-spacing: 0.1em;
    }

    .pma-nav {
        padding: 0 12px;
        height: 45px;
    }

    .pma-nav-link {
        font-size: 0.55rem;
    }

    .pma-nav-right {
        gap: 8px;
    }
}