/* ===================================================================
   Source Solutions — Base Stylesheet
   CSS custom properties (design tokens) + global resets
   Tailwind utility classes are applied via CDN in _head.php
   =================================================================== */

/* --- Design Tokens ------------------------------------------------ */
:root {
  /* Backgrounds / Surfaces */
  --color-background:               #121414;
  --color-surface:                  #121414;
  --color-surface-dim:              #121414;
  --color-surface-container-lowest: #0c0f0f;
  --color-surface-container-low:    #1a1c1c;
  --color-surface-container:        #1e2020;
  --color-surface-container-high:   #282a2b;
  --color-surface-container-highest:#333535;
  --color-surface-bright:           #37393a;

  /* Primary (Amber) */
  --color-primary:                  #ffdca4;
  --color-on-primary:               #422c00;
  --color-primary-container:        #ffb81c;
  --color-on-primary-container:     #6c4b00;
  --color-primary-fixed:            #ffdeaa;
  --color-primary-fixed-dim:        #ffba2c;
  --color-on-primary-fixed:         #271900;
  --color-surface-tint:             #ffba2c;
  --color-inverse-primary:          #7d5700;

  /* Text */
  --color-on-background:            #e2e2e2;
  --color-on-surface:               #e2e2e2;
  --color-on-surface-variant:       #d5c4ac;
  --color-inverse-surface:          #e2e2e2;
  --color-inverse-on-surface:       #2f3131;

  /* Borders */
  --color-outline:                  #9e8f79;
  --color-outline-variant:          #514533;

  /* Secondary */
  --color-secondary:                #c6c4df;
  --color-on-secondary:             #2f2e43;
  --color-secondary-container:      #47475d;
  --color-on-secondary-container:   #b8b6d0;

  /* Tertiary */
  --color-tertiary:                 #a8ebff;
  --color-tertiary-container:       #00d7fc;

  /* Error */
  --color-error:                    #ffb4ab;
  --color-error-container:          #93000a;

  /* Spacing */
  --stack-sm:        8px;
  --stack-md:        24px;
  --stack-lg:        64px;
  --gutter:          24px;
  --margin-mobile:   16px;
  --container-max:   1200px;
}

/* --- Base Reset --------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-background);
  color: var(--color-on-background);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* No shadows anywhere — use borders for depth */
* {
  box-shadow: none !important;
}

/* Sharp corners everywhere */
*, *::before, *::after {
  border-radius: 0 !important;
}

/* --- Material Symbols -------------------------------------------- */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24;
  user-select: none;
  vertical-align: middle;
  line-height: 1;
}

/* --- Typography --------------------------------------------------- */
h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-on-surface);
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--color-on-surface);
}

h3 {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-on-surface);
}

p {
  color: var(--color-on-surface-variant);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

/* --- Buttons ------------------------------------------------------ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-primary-container);
  color: var(--color-on-primary-fixed);
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--color-primary-container);
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: #ffffff;
  border-color: #ffffff;
  color: #121414;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: transparent;
  color: var(--color-on-surface);
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--color-on-surface);
  transition: background-color 0.2s, color 0.2s;
  cursor: pointer;
}

.btn-secondary:hover {
  background-color: #ffffff;
  color: #121414;
  border-color: #ffffff;
}

/* --- Cards -------------------------------------------------------- */
.card {
  background-color: var(--color-surface-container-low);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: border-color 0.3s;
}

.card:hover {
  border-color: var(--color-primary-container);
}

/* --- Tech chips --------------------------------------------------- */
.tech-chip {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-on-surface-variant);
  line-height: 1.5;
}

/* --- Eyebrow labels ----------------------------------------------- */
.eyebrow {
  font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', monospace;
  font-size: 0.75rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary-container);
}

/* --- Amber square bullet ------------------------------------------ */
.amber-bullet {
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--color-primary-container);
  flex-shrink: 0;
  margin-top: 0.45em;
}

/* --- Mono number label -------------------------------------------- */
.mono-number {
  font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', monospace;
  font-size: 0.75rem;
  color: var(--color-on-surface-variant);
}

/* --- Input fields ------------------------------------------------- */
.form-input,
.form-textarea {
  width: 100%;
  background-color: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-on-surface);
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s, outline-color 0.2s;
  outline: none;
  appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-primary-container);
  outline: 1px solid var(--color-primary-container);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--color-on-surface-variant);
  margin-bottom: 0.375rem;
}

/* --- Decorative: dot-grid ----------------------------------------- */
.dot-grid {
  background-image: radial-gradient(circle, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* --- Decorative: scanline animation ------------------------------- */
@keyframes scanline {
  0%   { top: 0%; }
  100% { top: 100%; }
}

.scanline {
  position: relative;
  overflow: hidden;
}

.scanline::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(180deg, transparent, var(--color-primary-container), transparent);
  opacity: 0.1;
  animation: scanline 4s linear infinite;
  pointer-events: none;
}

/* --- Scroll animations (IntersectionObserver) -------------------- */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-animate-delay="100"] { transition-delay: 0.1s; }
[data-animate-delay="200"] { transition-delay: 0.2s; }
[data-animate-delay="300"] { transition-delay: 0.3s; }
[data-animate-delay="400"] { transition-delay: 0.4s; }
[data-animate-delay="500"] { transition-delay: 0.5s; }

/* --- Nav ---------------------------------------------------------- */
.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-on-surface-variant);
  transition: color 0.2s;
  padding-bottom: 2px;
}

.nav-link:hover {
  color: var(--color-on-surface);
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: 700;
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 2px;
}

/* --- Stat block - portrait style ---------------------------------- */
.stat-portrait {
  border-left: 2px solid var(--color-primary-container);
  padding-left: 1.5rem;
}

.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--color-primary-container);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-label {
  font-family: ui-monospace, monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-on-surface-variant);
  margin-top: 0.375rem;
}

/* --- Section padding --------------------------------------------- */
.section-pad {
  padding-top: var(--stack-lg);
  padding-bottom: var(--stack-lg);
}

@media (min-width: 768px) {
  .section-pad {
    padding-top: 96px;
    padding-bottom: 96px;
  }
}

/* --- Container ---------------------------------------------------- */
.container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

@media (max-width: 640px) {
  .container {
    padding-left: var(--margin-mobile);
    padding-right: var(--margin-mobile);
  }
}

/* --- Service card mouse tracking (glow) -------------------------- */
.service-card {
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(255,184,28,0.08) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  left: calc(var(--mouse-x, 50%) * 1px);
  top: calc(var(--mouse-y, 50%) * 1px);
  pointer-events: none;
  transition: opacity 0.3s;
  opacity: 0;
}

.service-card:hover::before {
  opacity: 1;
}

/* --- Section border top ------------------------------------------ */
.section-border {
  border-top: 1px solid var(--color-outline-variant);
}

/* --- Page inner hero ---------------------------------------------- */
.page-hero {
  background-color: var(--color-surface-container-lowest);
  padding-top: 96px;
  padding-bottom: 64px;
  border-bottom: 1px solid var(--color-outline-variant);
}

/* --- Portfolio card lift (exception per buildplan) ---------------- */
.portfolio-card {
  background-color: var(--color-surface-container-low);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: border-color 0.3s, transform 0.3s;
}

.portfolio-card:hover {
  border-color: var(--color-primary-container);
  transform: translateY(-4px);
}

/* --- Contact form alert states ------------------------------------ */
.form-success {
  background-color: rgba(255, 184, 28, 0.1);
  border: 1px solid var(--color-primary-container);
  color: var(--color-primary-container);
  padding: 1rem;
  font-size: 0.9375rem;
}

.form-error {
  background-color: rgba(147, 0, 10, 0.2);
  border: 1px solid var(--color-error);
  color: var(--color-error);
  padding: 1rem;
  font-size: 0.9375rem;
}

.field-error {
  font-size: 0.8125rem;
  color: var(--color-error);
  margin-top: 0.25rem;
}