@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Doto&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap");

/* =====================================================
   DESIGN SYSTEM — Light-first, clean, premium
   ===================================================== */

* {
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  scroll-behavior: smooth;
  box-sizing: border-box;
}

body {
  font-family: "Inter", "Poppins", sans-serif;
  font-weight: 400;
  font-style: normal;
  user-select: none;
  overflow: hidden;
}

/* =====================================================
   LIGHT MODE (DEFAULT)
   ===================================================== */

:root {
  --font: "Inter", sans-serif;
  --font-heading: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
  --font-mono: "Doto", monospace;

  /* Backgrounds */
  --primary-bg-color: #f8fafc;
  --secondry-bg-color: #ffffff;
  --nav-color: #ffffff;
  --nav-hover-color: #f1f5f9;

  /* Text */
  --text-color: #0f172a;
  --text-secondary: #64748b;

  /* Accent */
  --main-color: #7c3aed;
  --main-color-alpha50: rgba(124, 58, 237, 0.4);
  --main-color-light: rgba(124, 58, 237, 0.08);

  /* Borders & shadows */
  --border-color: rgba(0, 0, 0, 0.07);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.05);
  --card-shadow-hover:
    0 4px 12px rgba(0, 0, 0, 0.1), 0 16px 40px rgba(0, 0, 0, 0.08);

  /* Hero bg */
  --home-bg: url(../images/bg_main.jpg);
  --home-text-color: #ffffff;
  --home-color: #ffffff;

  /* Section bg pattern */
  --bg-img: none;
  --bg-noise-img: none;

  /* Glass */
  --glass-primary: rgba(124, 58, 237, 0.5);
  --glass-secondary: rgba(139, 92, 246, 0.5);

  /* iOS-style radius */
  --radius-ios: 22px;
  --radius-card: 16px;

  /* Gradient tokens */
  --gradient-primary: linear-gradient(135deg, #7c3aed 0%, #2563eb 100%);
  --gradient-hero: linear-gradient(135deg, #7c3aed 0%, #a855f7 50%, #3b82f6 100%);
  --gradient-text: linear-gradient(135deg, #7c3aed 0%, #2563eb 100%);
  --gradient-accent: linear-gradient(135deg, #7c3aed, #a855f7);
}

/* =====================================================
   DARK MODE (opt-in via .dark-mode class)
   ===================================================== */

.dark-mode {
  --primary-bg-color: #0b0b0b;
  --secondry-bg-color: #1a1a1a;
  --nav-color: #181818;
  --nav-hover-color: #2a2a2a;
  --text-color: #f1f5f9;
  --text-secondary: #94a3b8;
  --main-color: #08e8de;
  --main-color-alpha50: rgba(8, 232, 222, 0.4);
  --main-color-light: rgba(8, 232, 222, 0.08);
  --border-color: rgba(255, 255, 255, 0.08);
  --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  --card-shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.6);
  --home-text-color: #fff;
  --home-color: #fff;
  --glass-primary: rgba(8, 232, 222, 0.5);
  --glass-secondary: rgba(0, 255, 229, 0.5);
  --gradient-primary: linear-gradient(135deg, #08e8de 0%, #0891b2 100%);
  --gradient-hero: linear-gradient(135deg, #08e8de 0%, #06b6d4 50%, #3b82f6 100%);
  --gradient-text: linear-gradient(135deg, #08e8de 0%, #38bdf8 100%);
  --gradient-accent: linear-gradient(135deg, #08e8de, #06b6d4);
}

/* =====================================================
   DARK / LIGHT MODE TOGGLE BUTTON
   ===================================================== */

.day-night-mode {
  position: absolute;
  right: 1rem;
  top: 1rem;
}

/* =====================================================
   MAIN LAYOUT
   ===================================================== */

.main {
  display: flex;
  height: 100vh;
  overflow: hidden;
  background-color: var(--primary-bg-color);
}

/* ── Premium Cursor ── */
.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  border-radius: 50%;
  pointer-events: none;
  z-index: 99999;
  will-change: transform;
  transition: opacity 0.2s ease;
}

/* Precise inner dot */
.cursor-dot {
  width: 6px;
  height: 6px;
  background: var(--main-color);
  box-shadow: 0 0 6px var(--main-color);
  transition:
    width 0.2s ease,
    height 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

/* Lagging outer ring */
.cursor-ring {
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--main-color);
  background: transparent;
  opacity: 0.6;
  transition:
    width 0.3s ease,
    height 0.3s ease,
    border-color 0.3s ease,
    opacity 0.3s ease,
    background 0.3s ease,
    border-width 0.3s ease;
}

/* Hover state — ring grows and fills slightly */
.cursor-ring.ring-hover {
  width: 48px;
  height: 48px;
  opacity: 0.4;
  background: rgba(8, 145, 178, 0.08);
  border-color: var(--main-color);
}
.cursor-dot.dot-hover {
  width: 4px;
  height: 4px;
  background: #fff;
  box-shadow: 0 0 8px var(--main-color);
}

/* Click state — ring shrinks sharply */
.cursor-ring.ring-click {
  width: 22px;
  height: 22px;
  opacity: 0.9;
  background: rgba(8, 145, 178, 0.18);
  transition:
    width 0.1s ease,
    height 0.1s ease,
    opacity 0.1s ease;
}

/* On dark hero section the cursor is always visible */
.home .cursor-dot {
  background: #08e8de;
  box-shadow: 0 0 8px #08e8de;
}
.home .cursor-ring {
  border-color: #08e8de;
}

/* Hide cursor on mobile and tablet screens */
@media (max-width: 1024px) {
  .cursor-dot,
  .cursor-ring {
    display: none;
  }
}

/* =====================================================
   TOP ICON BUTTONS (dark mode toggle, hamburger)
   ===================================================== */

.top-icons {
  height: 1rem;
  width: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  padding: 0.5rem;
  border: 1.5px solid var(--border-color);
  border-radius: 50px;
  color: var(--main-color);
  background-color: var(--secondry-bg-color);
  transition: all 0.3s ease;
  cursor: pointer;
  z-index: 3;
  box-shadow: var(--card-shadow);
}

.top-icons:hover {
  color: var(--secondry-bg-color);
  background: var(--main-color);
  border-color: var(--main-color);
  border-radius: 8px;
  transform: scale(1.1);
}

/* =====================================================
   SCROLLABLE SECTIONS CONTAINER
   ===================================================== */

.sections {
  background-color: var(--primary-bg-color);
  color: var(--text-color);
  min-height: 100vh;
  overflow-y: scroll;
  scrollbar-width: none;
  width: 100%;
  transition: background-color 0.3s ease;
}

.sections::-webkit-scrollbar {
  display: none;
}

/* Section bg pattern — subtle in light mode */
.home,
.about,
.projects,
.skills,
.education,
.certificates,
.contact {
  background-attachment: fixed;
}

/* =====================================================
   SECTION BANNERS
   ===================================================== */

.section-banner {
  background: var(--secondry-bg-color);
  border-bottom: 1px solid var(--border-color);
  height: 6rem;
  color: var(--text-color);
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.section-banner h2 {
  font-size: 2.5rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-color);
  display: inline-block;
  position: relative;
  margin: 0;
  z-index: 2;
}

.section-banner::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 6rem;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 4px 4px 0 0;
  box-shadow: 0 -2px 10px var(--main-color-alpha50);
  transform-origin: center;
  animation: underlineDraw 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  z-index: 1;
}

.section-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at bottom, var(--main-color-light) 0%, transparent 60%);
  pointer-events: none;
  z-index: 1;
}

@keyframes underlineDraw {
  from { transform: translateX(-50%) scaleX(0); }
  to   { transform: translateX(-50%) scaleX(1); }
}

/* =====================================================
   WHATSAPP FLOATING BUTTON
   ===================================================== */

#whatsapp-fab {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.65rem;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45);
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
  animation: wa-pulse 2.5s ease-in-out infinite;
}

#whatsapp-fab:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.65);
  animation: none;
  border-radius: 50%;
}

#whatsapp-fab:hover .whatsapp-tooltip {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.whatsapp-tooltip {
  position: absolute;
  right: 3.75rem;
  background: var(--secondry-bg-color);
  color: var(--text-color);
  font-size: 0.82rem;
  font-family: "Inter", sans-serif;
  padding: 0.4rem 0.85rem;
  border-radius: 2rem;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(8px);
  transition:
    opacity 0.25s ease,
    transform 0.25s ease;
  pointer-events: none;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
}

@keyframes wa-pulse {
  0%,
  100% {
    box-shadow:
      0 4px 20px rgba(37, 211, 102, 0.45),
      0 0 0 0 rgba(37, 211, 102, 0.35);
  }
  50% {
    box-shadow:
      0 4px 20px rgba(37, 211, 102, 0.45),
      0 0 0 12px rgba(37, 211, 102, 0);
  }
}

/* =====================================================
   CONTACT FORM STATUS MESSAGE
   ===================================================== */

#msg-sent {
  margin-top: 0.75rem;
  padding: 0.6rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  display: none;
  text-align: center;
}
#msg-sent.success {
  display: block;
  background: rgba(8, 145, 178, 0.08);
  border: 1px solid var(--main-color);
  color: var(--main-color);
}
#msg-sent.error {
  display: block;
  background: rgba(239, 68, 68, 0.06);
  border: 1px solid #ef4444;
  color: #ef4444;
}

/* Dark mode overrides for contact form */
.dark-mode #msg-sent.success {
  background: rgba(8, 232, 222, 0.08);
}