/* ========================================
   Rhystone Solutions - styles.css
   ======================================== */

/* --- Custom Properties --- */
:root {
  --color-navy: #3A4556;
  --color-navy-dark: #2C3544;
  --color-navy-light: #4A5A6E;
  --color-orange: #E8913A;
  --color-orange-hover: #D4801F;
  --color-white: #FFFFFF;
  --color-text: #3A4556;
  --color-text-muted: #6B7280;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F5F6F8;
  --color-border: #E5E7EB;

  --font-primary: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --line-height-body: 1.6;
  --line-height-heading: 1.2;

  --nav-height: 72px;
  --container-max: 1200px;

  --transition-fast: 200ms ease;
  --transition-base: 300ms ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: var(--line-height-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-orange);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-orange-hover);
}

ul {
  list-style: none;
}

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.75rem 1.5rem;
  background: var(--color-orange);
  color: var(--color-white);
  font-weight: 600;
  z-index: 9999;
  border-radius: 0 0 4px 4px;
}

.skip-link:focus {
  top: 0;
  color: var(--color-white);
}

/* --- Container --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 768px) {
  .container {
    padding: 0 2rem;
  }
}

/* --- Section Title --- */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: var(--line-height-heading);
  margin-bottom: 2.5rem;
  text-align: center;
  letter-spacing: -0.01em;
  color: var(--color-navy);
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
  }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-family: var(--font-primary);
  font-size: 0.9375rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 2px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
  min-height: 48px;
}

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

.btn--primary:hover {
  background: var(--color-orange-hover);
  border-color: var(--color-orange-hover);
  color: var(--color-white);
  transform: translateY(-1px);
}

/* Dark-context only (hero, about). Do not use on light backgrounds. */
.btn--secondary {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.btn--full {
  width: 100%;
}

.btn:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 2px;
}

/* ========================================
   Navigation
   ======================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.nav--scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
}

.nav__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav__logo img {
  height: 40px;
  width: auto;
}

/* Hamburger */
.nav__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.nav__hamburger,
.nav__hamburger::before,
.nav__hamburger::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-navy);
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.nav__hamburger {
  position: relative;
}

.nav__hamburger::before,
.nav__hamburger::after {
  content: '';
  position: absolute;
  left: 0;
}

.nav__hamburger::before {
  top: -7px;
}

.nav__hamburger::after {
  top: 7px;
}

/* Hamburger active state */
.nav__toggle[aria-expanded="true"] .nav__hamburger {
  background: transparent;
}

.nav__toggle[aria-expanded="true"] .nav__hamburger::before {
  top: 0;
  transform: rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__hamburger::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Mobile menu */
.nav__menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.98);
  padding: 1.5rem;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  border-bottom: 1px solid var(--color-border);
}

.nav__menu--open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nav__link {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--color-navy);
  font-size: 1rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  text-decoration: none;
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-orange);
}

.nav__link--cta {
  color: var(--color-orange);
  font-weight: 600;
}

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

/* Desktop nav */
@media (min-width: 768px) {
  .nav__toggle {
    display: none;
  }

  .nav__menu {
    position: static;
    width: auto;
    background: none;
    padding: 0;
    transform: none;
    opacity: 1;
    visibility: visible;
    border-bottom: none;
  }

  .nav__list {
    flex-direction: row;
    align-items: center;
    gap: 0;
  }

  .nav__link {
    padding: 0.5rem 1.25rem;
    font-size: 0.95rem;
  }

  .nav__link--cta {
    margin-left: 0.5rem;
    padding: 0.5rem 1.5rem;
    border: 2px solid var(--color-orange);
    border-radius: 4px;
  }

  .nav__link--cta:hover {
    background: var(--color-orange);
    color: var(--color-white);
  }
}

/* ========================================
   Hero (stays dark)
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-navy);
  overflow: hidden;
}

.hero__video-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero__video-bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(30, 37, 48, 0.80) 0%,
    rgba(30, 37, 48, 0.65) 50%,
    rgba(30, 37, 48, 0.85) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
  max-width: 800px;
  color: var(--color-white);
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: var(--line-height-heading);
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--color-white);
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* ========================================
   Solutions (light)
   ======================================== */
.solutions {
  padding: 6rem 0;
  background: var(--color-bg-alt);
}

.solutions__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .solutions__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}

.solution-card {
  background: var(--color-white);
  padding: 2rem;
  border-radius: 6px;
  border-left: 4px solid var(--color-orange);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.solution-card__icon {
  width: 48px;
  height: 48px;
  color: var(--color-orange);
  margin-bottom: 1.25rem;
}

.solution-card__icon svg {
  width: 100%;
  height: 100%;
}

.solution-card__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  line-height: var(--line-height-heading);
  color: var(--color-navy);
}

.solution-card__text {
  font-size: 1rem;
  color: #4B5563;
  line-height: 1.7;
}

/* ========================================
   About (stays dark with video)
   ======================================== */
.about {
  position: relative;
  padding: 6rem 0;
  background: var(--color-navy);
  overflow: hidden;
}

.about__video-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.about__video-bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(30, 37, 48, 0.75);
}

.about .container {
  position: relative;
  z-index: 1;
}

.about .section-title {
  color: var(--color-white);
}

.about__text {
  max-width: 720px;
  margin: 0 auto;
}

.about__text p {
  margin-bottom: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.1rem;
  line-height: 1.75;
}

.about__text p:last-child {
  margin-bottom: 0;
}

.about__text strong {
  color: var(--color-white);
}

/* ========================================
   Contact (light)
   ======================================== */
.contact {
  padding: 5rem 0;
  background: var(--color-bg-alt);
}

.contact__intro {
  text-align: center;
  color: #4B5563;
  font-size: 1.1rem;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 768px) {
  .contact__grid {
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
  }
}

.contact__form {
  background: var(--color-white);
  padding: 2rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

@media (min-width: 768px) {
  .contact__form {
    padding: 2.5rem;
  }
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 480px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.required {
  color: var(--color-orange);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-primary);
  font-size: 1rem;
  color: var(--color-text);
  background: #F9FAFB;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #9CA3AF;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-orange);
  box-shadow: 0 0 0 3px rgba(232, 145, 58, 0.15);
}

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

/* Form error state */
.form-group--error input,
.form-group--error textarea {
  border-color: #e74c3c;
}

.form-error {
  display: block;
  font-size: 0.8rem;
  color: #e74c3c;
  min-height: 1.2em;
  margin-top: 0.35rem;
}

/* Form status */
.form-status {
  margin-top: 1rem;
  padding: 0;
  border-radius: 4px;
  font-size: 0.95rem;
  text-align: center;
  transition: all var(--transition-base);
}

.form-status--success {
  padding: 1rem;
  background: rgba(46, 204, 113, 0.1);
  color: #16a34a;
  border: 1px solid rgba(46, 204, 113, 0.25);
}

.form-status--error {
  padding: 1rem;
  background: rgba(231, 76, 60, 0.1);
  color: #dc2626;
  border: 1px solid rgba(231, 76, 60, 0.25);
}

/* Contact info sidebar */
.contact__info {
  display: flex;
  align-items: flex-start;
  padding-top: 1rem;
}

.contact__info-block h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--color-navy);
}

.contact__info-block p {
  color: #4B5563;
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

.contact__email {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-orange);
}

.contact__email:hover {
  color: var(--color-orange-hover);
}

/* ========================================
   Footer (dark anchor)
   ======================================== */
.footer {
  padding: 2rem 0;
  background: var(--color-navy-dark);
  text-align: center;
}

.footer p {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.75);
}

.footer a {
  color: rgba(255, 255, 255, 0.75);
}

.footer a:hover {
  color: var(--color-orange);
}

/* ========================================
   Scroll Animations
   ======================================== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children slightly */
.solutions__grid .animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.solutions__grid .animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.solutions__grid .animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }

/* ========================================
   Reduced Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
}

/* ========================================
   Focus Visible
   ======================================== */
:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 2px;
}

a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
  outline: none;
}