/* ==========================================================================
   POWERLINE DESIGN SYSTEM: "Refined Command"
   A premium, data-forward aesthetic for busy executives
   ========================================================================== */

/* --------------------------------------------------------------------------
   FONTS
   Satoshi: Geometric, confident headlines
   DM Sans: Clean, readable body text
   JetBrains Mono: Data/code elements

   NOTE: Fonts are loaded via <link> tags in base.html for better performance.
   CSS @import blocks rendering and doesn't support SRI (Subresource Integrity).
   Font CDNs serve different CSS per user-agent, making SRI hashes impossible.
   -------------------------------------------------------------------------- */

/* --------------------------------------------------------------------------
   CSS CUSTOM PROPERTIES (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
    /* Brand Colors */
    --pl-red: #DC2626;
    --pl-red-glow: rgba(220, 38, 38, 0.15);
    --pl-red-hover: #B91C1C;
    --pl-red-soft: #FEE2E2;

    /* Neutral Palette - Refined Dark */
    --pl-bg-base: #09090B;
    --pl-bg-elevated: #18181B;
    --pl-bg-surface: #27272A;
    --pl-bg-hover: #3F3F46;

    /* Borders */
    --pl-border: #27272A;
    --pl-border-subtle: #3F3F46;
    --pl-border-emphasis: #52525B;

    /* Text */
    --pl-text-primary: #FAFAFA;
    --pl-text-secondary: #A1A1AA;
    --pl-text-muted: #71717A;
    --pl-text-inverse: #09090B;

    /* Accents */
    --pl-accent-success: #22C55E;
    --pl-accent-warning: #F59E0B;
    --pl-accent-info: #3B82F6;

    /* Typography Scale */
    --pl-font-display: 'Satoshi', -apple-system, BlinkMacSystemFont, sans-serif;
    --pl-font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --pl-font-mono: 'JetBrains Mono', ui-monospace, monospace;

    /* Spacing Scale */
    --pl-space-xs: 4px;
    --pl-space-sm: 8px;
    --pl-space-md: 16px;
    --pl-space-lg: 24px;
    --pl-space-xl: 32px;
    --pl-space-2xl: 48px;
    --pl-space-3xl: 64px;
    --pl-space-4xl: 96px;

    /* Border Radius */
    --pl-radius-sm: 6px;
    --pl-radius-md: 10px;
    --pl-radius-lg: 16px;
    --pl-radius-xl: 24px;
    --pl-radius-full: 9999px;

    /* Shadows */
    --pl-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --pl-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --pl-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --pl-shadow-glow: 0 0 40px var(--pl-red-glow);

    /* Transitions */
    --pl-transition-fast: 150ms ease;
    --pl-transition-base: 250ms ease;
    --pl-transition-slow: 400ms ease;
}

/* --------------------------------------------------------------------------
   BASE RESET & DEFAULTS
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--pl-font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--pl-text-primary);
    background: var(--pl-bg-base);
    min-height: 100vh;
}

/* --------------------------------------------------------------------------
   TYPOGRAPHY
   -------------------------------------------------------------------------- */
.pl-heading-1 {
    font-family: var(--pl-font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--pl-text-primary);
}

.pl-heading-2 {
    font-family: var(--pl-font-display);
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--pl-text-primary);
}

.pl-heading-3 {
    font-family: var(--pl-font-display);
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--pl-text-primary);
}

.pl-heading-4 {
    font-family: var(--pl-font-display);
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--pl-text-primary);
}

.pl-body {
    font-family: var(--pl-font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--pl-text-secondary);
}

.pl-body-lg {
    font-family: var(--pl-font-body);
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--pl-text-secondary);
}

.pl-caption {
    font-family: var(--pl-font-body);
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--pl-text-muted);
}

.pl-mono {
    font-family: var(--pl-font-mono);
    font-size: 0.875rem;
}

.pl-label {
    font-family: var(--pl-font-display);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--pl-text-muted);
}

/* --------------------------------------------------------------------------
   LAYOUT
   -------------------------------------------------------------------------- */
.pl-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--pl-space-lg);
}

.pl-container-narrow {
    max-width: 720px;
}

.pl-container-wide {
    max-width: 1400px;
}

.pl-section {
    padding: var(--pl-space-4xl) 0;
}

.pl-section-sm {
    padding: var(--pl-space-2xl) 0;
}

/* --------------------------------------------------------------------------
   NAVIGATION
   -------------------------------------------------------------------------- */
.pl-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(9, 9, 11, 0.85);
    backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--pl-border);
}

.pl-nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    padding: 0 var(--pl-space-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.pl-nav-logo {
    height: 32px;
    width: auto;
}

.pl-nav-links {
    display: flex;
    align-items: center;
    gap: var(--pl-space-lg);
}

.pl-nav-link {
    font-family: var(--pl-font-body);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--pl-text-secondary);
    text-decoration: none;
    transition: color var(--pl-transition-fast);
}

.pl-nav-link:hover {
    color: var(--pl-text-primary);
}

/* --------------------------------------------------------------------------
   BUTTONS
   -------------------------------------------------------------------------- */
.pl-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--pl-space-sm);
    padding: 12px 24px;
    font-family: var(--pl-font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
    border-radius: var(--pl-radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--pl-transition-fast);
    white-space: nowrap;
}

.pl-btn-primary {
    background: var(--pl-red);
    color: white;
    border-color: var(--pl-red);
}

.pl-btn-primary:hover {
    background: var(--pl-red-hover);
    border-color: var(--pl-red-hover);
    transform: translateY(-1px);
    box-shadow: var(--pl-shadow-glow);
}

.pl-btn-secondary {
    background: var(--pl-bg-surface);
    color: var(--pl-text-primary);
    border-color: var(--pl-border-subtle);
}

.pl-btn-secondary:hover {
    background: var(--pl-bg-hover);
    border-color: var(--pl-border-emphasis);
}

.pl-btn-ghost {
    background: transparent;
    color: var(--pl-text-secondary);
    border-color: transparent;
}

.pl-btn-ghost:hover {
    background: var(--pl-bg-surface);
    color: var(--pl-text-primary);
}

.pl-btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.pl-btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

.pl-btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
}

/* --------------------------------------------------------------------------
   CARDS
   -------------------------------------------------------------------------- */
.pl-card {
    background: var(--pl-bg-elevated);
    border: 1px solid var(--pl-border);
    border-radius: var(--pl-radius-lg);
    padding: var(--pl-space-xl);
    transition: all var(--pl-transition-base);
}

.pl-card:hover {
    border-color: var(--pl-border-subtle);
}

.pl-card-interactive:hover {
    transform: translateY(-2px);
    box-shadow: var(--pl-shadow-md);
    border-color: var(--pl-border-emphasis);
}

.pl-card-highlight {
    border-color: var(--pl-red);
    box-shadow: var(--pl-shadow-glow);
}

.pl-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--pl-space-lg);
}

.pl-card-title {
    font-family: var(--pl-font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--pl-text-primary);
}

.pl-card-body {
    color: var(--pl-text-secondary);
}

/* --------------------------------------------------------------------------
   FORMS
   -------------------------------------------------------------------------- */
.pl-form-group {
    margin-bottom: var(--pl-space-lg);
}

.pl-form-label {
    display: block;
    font-family: var(--pl-font-display);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--pl-text-primary);
    margin-bottom: var(--pl-space-sm);
}

.pl-form-input {
    width: 100%;
    padding: 14px 16px;
    font-family: var(--pl-font-body);
    font-size: 1rem;
    color: var(--pl-text-primary);
    background: var(--pl-bg-base);
    border: 1px solid var(--pl-border-subtle);
    border-radius: var(--pl-radius-md);
    transition: all var(--pl-transition-fast);
}

.pl-form-input:focus {
    outline: none;
    border-color: var(--pl-text-muted);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.05);
}

.pl-form-input::placeholder {
    color: var(--pl-text-muted);
}

.pl-form-hint {
    font-size: 0.8125rem;
    color: var(--pl-text-muted);
    margin-top: var(--pl-space-xs);
}

.pl-form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* Input with icon/action */
.pl-input-wrapper {
    position: relative;
}

.pl-input-action {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
}

/* --------------------------------------------------------------------------
   BADGES & STATUS
   -------------------------------------------------------------------------- */
.pl-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    font-family: var(--pl-font-display);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--pl-radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pl-badge-neutral {
    background: var(--pl-bg-surface);
    color: var(--pl-text-secondary);
}

.pl-badge-success {
    background: rgba(34, 197, 94, 0.15);
    color: var(--pl-accent-success);
}

.pl-badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--pl-accent-warning);
}

.pl-badge-error {
    background: var(--pl-red-glow);
    color: var(--pl-red);
}

.pl-badge-info {
    background: rgba(59, 130, 246, 0.15);
    color: var(--pl-accent-info);
}

/* Status dot */
.pl-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

.pl-status-dot-pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* --------------------------------------------------------------------------
   PROGRESS & STEPS
   -------------------------------------------------------------------------- */
.pl-progress {
    height: 6px;
    background: var(--pl-bg-surface);
    border-radius: var(--pl-radius-full);
    overflow: hidden;
}

.pl-progress-bar {
    height: 100%;
    background: var(--pl-red);
    border-radius: var(--pl-radius-full);
    transition: width var(--pl-transition-slow);
}

.pl-steps {
    display: flex;
    gap: var(--pl-space-md);
}

.pl-step {
    display: flex;
    align-items: center;
    gap: var(--pl-space-sm);
}

.pl-step-number {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--pl-font-display);
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: 50%;
    background: var(--pl-bg-surface);
    color: var(--pl-text-muted);
    border: 1px solid var(--pl-border-subtle);
}

.pl-step-complete .pl-step-number {
    background: var(--pl-accent-success);
    color: white;
    border-color: var(--pl-accent-success);
}

.pl-step-active .pl-step-number {
    background: var(--pl-red);
    color: white;
    border-color: var(--pl-red);
}

.pl-step-label {
    font-size: 0.875rem;
    color: var(--pl-text-muted);
}

.pl-step-complete .pl-step-label,
.pl-step-active .pl-step-label {
    color: var(--pl-text-primary);
}

/* --------------------------------------------------------------------------
   LIST ITEMS
   -------------------------------------------------------------------------- */
.pl-list {
    list-style: none;
}

.pl-list-item {
    display: flex;
    align-items: flex-start;
    gap: var(--pl-space-md);
    padding: var(--pl-space-md) 0;
    border-bottom: 1px solid var(--pl-border);
}

.pl-list-item:last-child {
    border-bottom: none;
}

.pl-list-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--pl-red);
}

.pl-list-check {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--pl-accent-success);
}

/* --------------------------------------------------------------------------
   DIVIDERS
   -------------------------------------------------------------------------- */
.pl-divider {
    height: 1px;
    background: var(--pl-border);
    margin: var(--pl-space-xl) 0;
}

.pl-divider-vertical {
    width: 1px;
    height: 24px;
    background: var(--pl-border-subtle);
}

/* --------------------------------------------------------------------------
   BACKGROUNDS & EFFECTS
   -------------------------------------------------------------------------- */
.pl-bg-gradient {
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, var(--pl-red-glow), transparent),
        var(--pl-bg-base);
}

.pl-bg-grid {
    background-image:
        linear-gradient(var(--pl-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--pl-border) 1px, transparent 1px);
    background-size: 64px 64px;
    background-position: center center;
}

.pl-glow {
    position: relative;
}

.pl-glow::before {
    content: '';
    position: absolute;
    inset: -1px;
    background: linear-gradient(135deg, var(--pl-red) 0%, transparent 50%);
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    transition: opacity var(--pl-transition-base);
}

.pl-glow:hover::before {
    opacity: 1;
}

/* --------------------------------------------------------------------------
   ANIMATIONS
   -------------------------------------------------------------------------- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

.pl-animate-in {
    animation: slideUp 0.6s ease forwards;
}

.pl-animate-delay-1 { animation-delay: 0.1s; }
.pl-animate-delay-2 { animation-delay: 0.2s; }
.pl-animate-delay-3 { animation-delay: 0.3s; }
.pl-animate-delay-4 { animation-delay: 0.4s; }

/* --------------------------------------------------------------------------
   UTILITIES
   -------------------------------------------------------------------------- */
.pl-text-center { text-align: center; }
.pl-text-left { text-align: left; }
.pl-text-right { text-align: right; }

.pl-text-primary { color: var(--pl-text-primary); }
.pl-text-secondary { color: var(--pl-text-secondary); }
.pl-text-muted { color: var(--pl-text-muted); }
.pl-text-red { color: var(--pl-red); }
.pl-text-success { color: var(--pl-accent-success); }

.pl-flex { display: flex; }
.pl-flex-col { flex-direction: column; }
.pl-items-center { align-items: center; }
.pl-justify-center { justify-content: center; }
.pl-justify-between { justify-content: space-between; }
.pl-gap-sm { gap: var(--pl-space-sm); }
.pl-gap-md { gap: var(--pl-space-md); }
.pl-gap-lg { gap: var(--pl-space-lg); }
.pl-gap-xl { gap: var(--pl-space-xl); }

.pl-mt-sm { margin-top: var(--pl-space-sm); }
.pl-mt-md { margin-top: var(--pl-space-md); }
.pl-mt-lg { margin-top: var(--pl-space-lg); }
.pl-mt-xl { margin-top: var(--pl-space-xl); }
.pl-mt-2xl { margin-top: var(--pl-space-2xl); }

.pl-mb-sm { margin-bottom: var(--pl-space-sm); }
.pl-mb-md { margin-bottom: var(--pl-space-md); }
.pl-mb-lg { margin-bottom: var(--pl-space-lg); }
.pl-mb-xl { margin-bottom: var(--pl-space-xl); }
.pl-mb-2xl { margin-bottom: var(--pl-space-2xl); }

.pl-hidden { display: none !important; }

/* --------------------------------------------------------------------------
   RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    .pl-nav-inner {
        height: 64px;
    }

    .pl-nav-logo {
        height: 28px;
    }

    .pl-section {
        padding: var(--pl-space-2xl) 0;
    }

    .pl-card {
        padding: var(--pl-space-lg);
    }

    .pl-hide-mobile {
        display: none !important;
    }
}

@media (min-width: 769px) {
    .pl-hide-desktop {
        display: none !important;
    }
}