/* =====================================
   Responsive Styles
   Breakpoints:
   - Desktop:  1200px+
   - Laptop:   1024px — 1199px
   - Tablet:   768px — 1023px
   - Mobile:   480px — 767px
   - Small:    < 480px
   ===================================== */

/* =====================================
   Laptop — 1024px to 1199px
   ===================================== */

@media (max-width: 1199px) {
  :root {
    --font-size-5xl: 2.75rem;
    --font-size-4xl: 2.25rem;
    --font-size-3xl: 1.75rem;
  }

  .hero__grid {
    gap: var(--space-8);
  }

  .disciplines__grid {
    gap: var(--space-5);
  }

  .discipline-card {
    padding: var(--space-6);
  }

  .journey-card__skills {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* =====================================
   Tablet — 768px to 1023px
   ===================================== */

@media (max-width: 1023px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-3xl: 1.625rem;
    --space-24: 4.5rem;
  }

  .hero__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__text {
    margin-inline: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__visual {
    align-items: center;
    order: -1;
  }

  /* FIX: On tablet, show process arrows as down-arrows between rows */
  .process__arrow {
    display: none; /* Hide inline arrows on tablet — grid handles layout with ::after pseudo-elements */
  }

  .hero__stats {
    flex-direction: row;
    max-width: 100%;
    flex-wrap: wrap;
    justify-content: center;
  }

  .stat-card {
    flex: 1 1 200px;
    max-width: 280px;
  }

  .hero__illustration {
    display: none;
  }

  .disciplines__grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin-inline: auto;
  }

  .process__timeline {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-card[data-step="5"] { grid-column: 2; grid-row: 3; }
  .process-card[data-step="6"] { grid-column: 1; grid-row: 3; }
  .process-card[data-step="7"] { grid-column: 1; grid-row: 4; }
  .process-card[data-step="8"] { grid-column: 2; grid-row: 4; }

  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .about__visual {
    order: -1;
    max-width: 480px;
    margin-inline: auto;
  }

  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-6);
    padding: var(--space-8);
    background: rgba(5, 10, 16, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-slow), opacity var(--transition-base), visibility var(--transition-base);
  }

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

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }

  .nav__link {
    display: block;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
  }

  .nav__link:hover {
    background: rgba(59, 130, 246, 0.08);
  }

  .nav__cta {
    text-align: center;
  }

  .header__toggle {
    display: flex;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .footer__nav {
    justify-content: center;
  }
}

/* =====================================
   Mobile — 480px to 767px
   ===================================== */

@media (max-width: 767px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.875rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
    --container-padding: var(--space-4);
    --space-24: 3.5rem;
    --space-16: 2.5rem;
  }

  .section {
    padding-block: var(--space-16);
  }

  .hero {
    
    min-height: auto;
    padding-block: calc(var(--header-height) + var(--space-10)) var(--space-16);
  }

  .hero__stats {
    
    flex-direction: column;
    align-items: stretch;
  }

  .stat-card {
    max-width: 100%;
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  /* FIX: Reset hero__visual order on mobile so content block appears first,
     then stats/visual block appears below it (natural HTML flow order) */
  .hero__visual {
    order: 0;
  }

  .herocontent {
    order: 0;
  }

  /* FIX: Remove .hero1 left padding on mobile to prevent overflow */
  .hero1 {
    padding-left: 0;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .discipline-card__columns {
    grid-template-columns: 1fr;
  }

  /* Process — vertical timeline on mobile */
  .process__timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 480px;
    margin-inline: auto;
  }

  .process-card {
    position: relative;
  }

  .process-card[data-step] {
    grid-column: auto;
    grid-row: auto;
  }

  /* FIX: Show process arrows as visible down-arrows on mobile vertical timeline */
  .process__arrow {
    display: flex !important;
    align-items: center;
    justify-content: center;
    height: 40px;
    color: var(--color-primary);
    font-size: 1.5rem;
  }

  /* FIX: All arrow variants become down-arrows on mobile */
  .process__arrow::before {
    content: '↓';
    font-size: 1.5rem;
    opacity: 0.7;
  }

  .process__arrow--right,
  .process__arrow--left,
  .process__arrow--down {
    display: flex !important;
  }

  .process__arrow--right::before,
  .process__arrow--left::before,
  .process__arrow--down::before {
    content: '↓';
  }

  .about__title {
    font-size: var(--font-size-2xl);
  }

  .achievement-tag {
    display: none;
  }

  .achievement-tag--top,
  .achievement-tag--left-top,
  .achievement-tag--right-top {
    display: block;
    position: static;
    transform: none;
    margin-bottom: var(--space-2);
    animation: none;
  }

  .about__image-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .about__image-wrapper .achievement-tag--top {
    order: -1;
  }

  .journey-card {
    padding: var(--space-6);
  }

  .journey-card__skills {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: var(--space-6);
  }

  .back-to-top {
    bottom: var(--space-4);
    right: var(--space-4);
    width: 44px;
    height: 44px;
  }
}

/* =====================================
   Small Mobile — below 480px
   ===================================== */

@media (max-width: 479px) {
  :root {
    --font-size-5xl: 1.75rem;
    --header-height: 64px;
  }

  .header__logo-text {
    display: none;
  }

  .header__logo--footer .header__logo-text {
    display: flex;
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  .education-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .profile-card {
    left: var(--space-4);
    right: var(--space-4);
    bottom: var(--space-4);
    padding: var(--space-4);
  }
}

/* =====================================
   Large Desktop — Process Snake Arrows
   ===================================== */

@media (min-width: 1024px) {
  .process__timeline {
    row-gap: var(--space-8);
  }

  /* FIX: Horizontal arrows between row 1 cards — made larger and more visible */
  .process-card[data-step="1"]::after,
  .process-card[data-step="2"]::after,
  .process-card[data-step="3"]::after {
    content: '→';
    position: absolute;
    right: -20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-primary-light);
    opacity: 0.8;
    font-size: 1.75rem;
    z-index: 1;
  }

  /* FIX: Down arrow from step 4 to step 5 — made larger and more visible */
  .process-card[data-step="4"]::after {
    content: '↓';
    position: absolute;
    right: 50%;
    bottom: -32px;
    transform: translateX(50%);
    color: var(--color-primary-light);
    opacity: 0.8;
    font-size: 1.75rem;
  }

  /* FIX: Horizontal arrows on row 2 (right to left) — made larger and more visible */
  .process-card[data-step="5"]::after,
  .process-card[data-step="6"]::after,
  .process-card[data-step="7"]::after {
    content: '←';
    position: absolute;
    left: -20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-primary-light);
    opacity: 0.8;
    font-size: 1.75rem;
  }

  /* FIX: Hide the inline <span> arrows on desktop — ::after pseudo-elements handle it */
  .process__arrow {
    display: none !important;
  }
}

/* =====================================
   Landscape Mobile
   ===================================== */

@media (max-height: 500px) and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding-block: calc(var(--header-height) + var(--space-6)) var(--space-10);
  }

  .hero__grid {
    grid-template-columns: 1fr 1fr;
    text-align: left;
  }

  .hero__visual {
    order: 0;
  }

  .hero__actions {
    justify-content: flex-start;
  }

  .hero__stats {
    flex-direction: column;
  }
}

/* =====================================
   Print Styles
   ===================================== */

@media print {
  .header,
  .scroll-progress,
  .back-to-top,
  .header__toggle,
  .contact-form,
  .contact__map {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .section {
    page-break-inside: avoid;
  }
}