/* =========================
   GLOBAL RESET & VARIABLES
========================= */
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;700&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  text-decoration: none;
  border: none;
  outline: none;
  font-family: "Poppins", sans-serif;
}

:root {
  --bg-color: #1f242d;
  --second-bg-color: #323946;
  --main-color: rgb(185, 15, 143);
  --white-color: #fff;
  --disabled-color: #fff3;
  --surface-color: #323946;
  --text-color: #ffffff;
  --card-color: #2a2f3a;
  --nav-height: 8rem;
  --toggle-color: #ffffff;
  --bar-color: #0e182b;
}

html {
  font-size: 62.5%;
}

body {
  background: var(--bg-color);
  color: var(--text-color);
  --overlay-color: rgba(30, 60, 150, 0.3);
  overflow-x: hidden;
}

/* LIGHT MODE */
body.light {
  --bg-color: #f5f7fb;
  --second-bg-color: #e2e6f0;
  --surface-color: #e2e6f0;
  --text-color: #1f242d;
  --card-color: #ffffff;
  --white-color: #1f242d;
  --disabled-color: #acadaf;
  --toggle-color: #777575;
  --overlay-color: transparent; /* no fade on light mode */
}
.img-box,
.img-overlay {
  background: var(--overlay-color);
}

/* =========================
   THEME SWITCH (REAL TOGGLE)
========================= */
.theme-switch {
  position: relative;
  display: inline-block;
  width: 46px;
  height: 24px;
  z-index: 90;
}

.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: #ccc;
  border-radius: 34px;
  transition: 0.3s;
}

.slider::before {
  content: "";
  background: url("../bootstrap-icons-1.13.1/moon.svg") center / 14px no-repeat;
  background-color: var(--toggle-color);
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  border-radius: 50%;
  transition: 0.3s;
}

/* DARK MODE ON */
.theme-switch input:checked + .slider {
  background-color: var(--main-color);
}

.theme-switch input:checked + .slider::before {
  content: "";
  background: url("../bootstrap-icons-1.13.1/sun.svg") center / 14px no-repeat;
  background-color: var(--toggle-color);
  transform: translateX(22px);
} /* =========================
   HORIZONTAL RAIN WIPE
========================= */

.bars-box {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: flex;
  z-index: 99999999999;
  pointer-events: none;
  overflow: hidden;
}

.bars-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      circle at 15% 50%,
      color-mix(in srgb, var(--main-color) 30%, transparent),
      transparent 45%
    ),
    radial-gradient(
      circle at 85% 55%,
      color-mix(in srgb, #54d6ff 20%, transparent),
      transparent 50%
    );
  opacity: 0;
  transition: opacity 0.25s ease;
}

.bars-box.active::before {
  opacity: 0.75;
}

/* Vertical rain bars */
.bars-box .bar {
  flex: 0 0 auto;
  width: 2.5vw;
  min-width: 8px;
  height: 100vh;
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--bar-color) 80%, #080a10),
    color-mix(in srgb, var(--main-color) 18%, var(--bar-color)),
    color-mix(in srgb, var(--bar-color) 84%, #04060a)
  );
  border-inline: 1px solid rgba(255, 255, 255, 0.05);
  opacity: 0;
  transform: translateX(-130%) skewX(-7deg);
  will-change: transform, opacity;
  box-shadow:
    0 0 1.2rem rgba(0, 0, 0, 0.32),
    inset 0 0 1.2rem rgba(255, 255, 255, 0.04);
}

.bars-box .bar::before {
  content: "";
  position: absolute;
  inset: -12% 25% -12% 25%;
  background: linear-gradient(
    180deg,
    transparent,
    color-mix(in srgb, var(--main-color) 78%, #fff),
    transparent
  );
  opacity: 0;
  filter: blur(1.2px);
}

/* Trigger animation */
.bars-box.active .bar {
  animation: horizontal-rain var(--bar-duration, 1.08s)
    cubic-bezier(0.22, 0.9, 0.25, 1) forwards;
  animation-delay: calc(var(--bar-stagger, 0.02s) * var(--i));
}

.bars-box.active .bar::before {
  animation: bar-core-glow var(--bar-core-duration, 1.08s) ease forwards;
  animation-delay: calc(var(--bar-stagger, 0.02s) * var(--i));
}

/* Clean horizontal sweep */
@keyframes horizontal-rain {
  0% {
    transform: translateX(-130%) skewX(-7deg);
    opacity: 0;
  }
  18% {
    opacity: 0.92;
  }
  62% {
    opacity: 0.98;
    transform: translateX(8%) skewX(-4deg);
  }
  100% {
    transform: translateX(130%) skewX(-7deg);
    opacity: 0;
  }
}

@keyframes bar-core-glow {
  0% {
    opacity: 0;
    transform: scaleY(0.8);
  }
  35% {
    opacity: 0.95;
  }
  100% {
    opacity: 0;
    transform: scaleY(1.05);
  }
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(0, 0, 0, 0.08),
    rgba(0, 0, 0, 0.35)
  );
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 9998;
}

body.rain-active::before {
  opacity: 1;
}

/* BAR BOX ENDS */
/* =========================
   HEADER / NAVIGATION
========================= */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-inline: clamp(1.6rem, 4vw, 5rem);
  position: relative;
  z-index: 1200;
}

@keyframes show-header {
  to {
    visibility: visible;
    opacity: 1;
  }
}
.header-right {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

nav {
  display: flex;
  gap: 2rem;
}

nav a {
  position: relative;
  font-size: 1.5rem; /*  NAV FONT SIZE FIXED */
  color: var(--white-color);
  font-weight: 500;
  padding: 0.4rem 0.1rem;
  letter-spacing: 0.015em;
  transition:
    color 0.3s ease,
    text-shadow 0.3s ease,
    transform 0.3s ease;
}

nav a::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 100%;
  height: 0.22rem;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    transparent,
    color-mix(in srgb, var(--main-color) 78%, #fff),
    transparent
  );
  background-size: 220% 100%;
  background-position: 100% 50%;
  transform: scaleX(0.12);
  transform-origin: center;
  opacity: 0;
  transition:
    transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.35s ease;
}

nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -0.55rem;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  transform: translateX(-50%) scale(0.3);
  background: color-mix(in srgb, var(--main-color) 80%, #fff);
  box-shadow: 0 0 0.9rem color-mix(in srgb, var(--main-color) 85%, transparent);
  opacity: 0;
  transition:
    transform 0.3s ease,
    opacity 0.3s ease;
}

nav a:hover,
nav a.active {
  color: var(--main-color);
  text-shadow: 0 0 1rem color-mix(in srgb, var(--main-color) 60%, transparent);
  transform: translateY(-0.1rem);
}

nav a:hover::before,
nav a.active::before {
  opacity: 1;
  transform: scaleX(1);
}

nav a.active::before {
  animation: nav-link-shimmer 2.2s ease-in-out infinite;
}

nav a:hover::after,
nav a.active::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

@keyframes nav-link-shimmer {
  0% {
    background-position: 100% 50%;
  }
  50% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 100% 50%;
  }
}

/* =========================
   MENU ICONS
========================= */
#menu-icon,
#close-icon {
  display: none;
  cursor: pointer;
  border: 2px solid var(--main-color);
  border-radius: 6px;
  padding: 5px;
  background: var(--white-color);
  transition: 0.3s;
}

body.light #menu-icon,
body.light #close-icon {
  background: #d9dde6;
  border-color: #8f96a8;
}

body.light #menu-icon img,
body.light #close-icon img {
  filter: brightness(0) saturate(0%) opacity(0.78);
}

#menu-icon:hover,
#close-icon:hover {
  box-shadow: 0 0 10px var(--main-color);
  transform: scale(1.1);
}

/* =========================
   OVERLAY (iOS Glass Effect)
========================= */
.overlay {
  position: fixed;
  inset: 0;

  /* Glass look */
  background: rgba(20, 20, 20, 0.35);
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
  box-shadow: inset 0 0 60px rgba(255, 255, 255, 0.05);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.3s ease,
    visibility 0.3s ease;

  z-index: 98;
}

.overlay.show {
  opacity: 1;
  visibility: visible;
}

/* Global btn */

.btn {
  display: inline-block;
  padding: 1rem 3rem;
  background: var(--main-color);
  border: 0.2rem solid var(--main-color);
  border-radius: 4rem;
  box-shadow: 0 0 1rem var(--main-color);
  font-size: 1.6rem;
  color: var(--bg-color);
  font-weight: 500;
  transition: 0.5s;
}

.btn:hover {
  background: transparent;
  color: var(--main-color);
  box-shadow: none;
}

/* =========================
   SITE AI ASSISTANT
========================= */
.dw-ai-widget {
  position: fixed;
  right: 2rem;
  bottom: 2rem;
  z-index: 9997;
}

.dw-ai-fab {
  position: relative;
  width: 5.6rem;
  height: 5.6rem;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--main-color), #b90f8f);
  border: 0.2rem solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 1.2rem 2.6rem rgba(0, 0, 0, 0.28);
  cursor: pointer;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
  isolation: isolate;
}

.dw-ai-fab::after {
  content: "";
  position: absolute;
  inset: -0.5rem;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--main-color) 55%, transparent);
  opacity: 0;
  transform: scale(0.88);
  animation: ai-pulse 2.2s infinite;
  z-index: -1;
}

.dw-ai-fab-icon {
  width: 2.55rem;
  height: 2.55rem;
  object-fit: contain;
  filter: drop-shadow(0 0 0.6rem rgba(16, 163, 127, 0.7));
}

.dw-ai-fab:hover {
  transform: translateY(-0.3rem) scale(1.02);
  box-shadow: 0 1.4rem 3.1rem rgba(0, 0, 0, 0.32);
}

.dw-ai-panel {
  position: absolute;
  right: 0;
  bottom: 7rem;
  width: min(38rem, calc(100vw - 2.4rem));
  height: 50rem;
  background: linear-gradient(
    165deg,
    rgba(255, 255, 255, 0.1),
    rgba(255, 255, 255, 0.04)
  );
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 1.6rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow:
    0 1.6rem 3.8rem rgba(0, 0, 0, 0.34),
    0 0 0.9rem color-mix(in srgb, var(--main-color) 42%, transparent);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.8rem) scale(0.98);
  transition:
    opacity 0.24s ease,
    transform 0.24s ease;
}

.dw-ai-widget.open .dw-ai-panel {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.dw-ai-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.4rem 1.4rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--main-color) 22%, transparent),
    transparent
  );
}

.dw-ai-header h3 {
  font-size: 1.75rem;
  color: var(--white-color);
}

.dw-ai-status {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.4rem;
  font-size: 1.2rem;
  color: var(--text-color);
  opacity: 0.85;
}

.dw-ai-status i {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: #21d07a;
  box-shadow: 0 0 0.7rem #21d07a;
  animation: ai-status-blink 1.5s infinite;
}

.dw-ai-actions {
  display: flex;
  gap: 0.6rem;
}

.dw-ai-close {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--white-color);
  border-radius: 0.8rem;
  padding: 0.6rem 0.9rem;
  font-size: 1.2rem;
  cursor: pointer;
  transition:
    background 0.2s ease,
    border-color 0.2s ease;
}

.dw-ai-close {
  font-size: 1.6rem;
  line-height: 1;
}

.dw-ai-close:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.35);
}

.dw-ai-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.dw-ai-message {
  max-width: 88%;
  padding: 0.95rem 1.1rem;
  border-radius: 1rem;
  font-size: 1.33rem;
  line-height: 1.5;
  animation: ai-msg-in 0.28s ease;
}

.dw-ai-message.assistant {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.13);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--white-color);
}

.dw-ai-message.user {
  align-self: flex-end;
  background: rgba(185, 15, 143, 0.28);
  border: 1px solid rgba(185, 15, 143, 0.42);
  color: #fff;
}

.dw-ai-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.8rem;
  padding: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.dw-ai-input {
  border-radius: 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(0, 0, 0, 0.2);
  color: var(--white-color);
  font-size: 1.3rem;
  padding: 0.95rem 1rem;
  box-shadow: inset 0 0 0 transparent;
  transition:
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

.dw-ai-input:focus {
  border-color: color-mix(in srgb, var(--main-color) 70%, #fff);
  box-shadow: 0 0 0.8rem color-mix(in srgb, var(--main-color) 50%, transparent);
}

.dw-ai-input::placeholder {
  color: color-mix(in srgb, var(--white-color) 65%, transparent);
}

.dw-ai-form button {
  border-radius: 0.9rem;
  background: var(--main-color);
  border: 1px solid var(--main-color);
  color: #fff;
  font-size: 1.25rem;
  font-weight: 600;
  padding: 0.9rem 1.2rem;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.dw-ai-form button:hover {
  opacity: 0.88;
}

.dw-ai-message.loading {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 5.5rem;
}

.dw-ai-message.loading .dw-dot {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: color-mix(in srgb, var(--main-color) 70%, #fff);
  animation: ai-dot 1.1s infinite ease-in-out;
}

.dw-ai-message.loading .dw-dot:nth-child(2) {
  animation-delay: 0.15s;
}

.dw-ai-message.loading .dw-dot:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes ai-msg-in {
  from {
    opacity: 0;
    transform: translateY(0.45rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ai-dot {
  0%,
  80%,
  100% {
    opacity: 0.35;
    transform: scale(0.85);
  }
  40% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes ai-status-blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.55;
  }
}

@keyframes ai-pulse {
  0% {
    opacity: 0;
    transform: scale(0.85);
  }
  45% {
    opacity: 0.6;
  }
  100% {
    opacity: 0;
    transform: scale(1.18);
  }
}

body.light .dw-ai-panel {
  background: linear-gradient(
    165deg,
    rgba(255, 255, 255, 0.95),
    rgba(255, 255, 255, 0.86)
  );
  border: 1px solid rgba(0, 0, 0, 0.08);
}

body.light .dw-ai-message.assistant {
  background: #eef1f8;
  border-color: #dbe2ee;
  color: #1f242d;
}

body.light .dw-ai-input {
  background: #fff;
  border-color: #d2d9e5;
  color: #1f242d;
}

/* Mobile drawer */
@media (max-width: 768px) {
  :root {
    --nav-height: 6.5rem;
  }

  header {
    padding-inline: 1.2rem;
  }

  #menu-icon {
    display: block;
  }

  /* NAV DRAWER */
  nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(330px, 88%);
    height: 100vh;
    background: linear-gradient(
      180deg,
      color-mix(in srgb, var(--bg-color) 90%, #000),
      var(--bg-color)
    );
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding: calc(env(safe-area-inset-top, 0px) + 7rem) 1.4rem 2.2rem;
    gap: 0.6rem;
    align-items: stretch;
    overflow-y: auto;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1300;
    border-left: 1px solid
      color-mix(in srgb, var(--main-color) 28%, transparent);
    box-shadow: -1.2rem 0 3rem rgba(0, 0, 0, 0.26);
  }

  nav a {
    width: 100%;
    padding: 1.15rem 1.2rem;
    border-radius: 0.95rem;
    background: rgba(255, 255, 255, 0.03);
    font-size: 1.6rem;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.08);
    opacity: 0;
    transform: translateX(1.4rem);
  }

  nav a::before {
    left: 1.2rem;
    width: calc(100% - 2.4rem);
    bottom: 0.7rem;
  }

  nav a::after {
    left: 1.6rem;
    bottom: 0.5rem;
    transform: translateX(0) scale(0.3);
  }

  nav a:hover,
  nav a.active {
    background: rgba(185, 15, 143, 0.16);
    transform: translateX(0.2rem);
    border-color: color-mix(in srgb, var(--main-color) 40%, transparent);
  }

  nav a:hover::after,
  nav a.active::after {
    transform: translateX(0) scale(1);
  }

  nav.show {
    transform: translateX(0);
    visibility: visible;
  }

  nav.show a {
    animation: nav-item-reveal 0.42s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  }

  nav.show a:nth-child(1) {
    animation-delay: 0.08s;
  }

  nav.show a:nth-child(2) {
    animation-delay: 0.14s;
  }

  nav.show a:nth-child(3) {
    animation-delay: 0.2s;
  }

  nav.show a:nth-child(4) {
    animation-delay: 0.26s;
  }

  nav.show a:nth-child(5) {
    animation-delay: 0.32s;
  }

  @keyframes nav-item-reveal {
    from {
      opacity: 0;
      transform: translateX(1.4rem);
    }

    72% {
      opacity: 1;
      transform: translateX(-0.25rem);
    }

    to {
      opacity: 1;
      transform: translateX(0);
    }
  }

  /*  Hide toggle by default on mobile */
  .theme-switch {
    position: absolute;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.15s ease;
  }

  /*  Show toggle ONLY when menu is open */
  body.menu-open nav .theme-switch {
    position: relative;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    margin: 0.7rem 0 1.2rem 0.5rem;
  }

  .bars-box.active::before {
    opacity: 0.58;
  }

  .bars-box .bar {
    width: 3.4vw;
    min-width: 6px;
    transform: translateX(-118%) skewX(-5deg);
  }

  @keyframes horizontal-rain {
    0% {
      transform: translateX(-118%) skewX(-5deg);
      opacity: 0;
    }
    20% {
      opacity: 0.9;
    }
    64% {
      opacity: 0.96;
      transform: translateX(6%) skewX(-3deg);
    }
    100% {
      transform: translateX(118%) skewX(-5deg);
      opacity: 0;
    }
  }

  .dw-ai-widget {
    right: 1.2rem;
    bottom: 1.2rem;
  }

  .dw-ai-panel {
    width: min(36rem, calc(100vw - 1.6rem));
    height: min(52rem, 76vh);
    right: 0;
    bottom: 6.5rem;
  }

  .dw-ai-fab {
    width: 5rem;
    height: 5rem;
  }
  /* MENU ICON TOGGLES */
  body.menu-open #menu-icon {
    display: none;
  }

  body.menu-open #close-icon {
    display: block;
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 1400;
  }

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

  .btn-sci {
    justify-content: center;
  }
}

@media (max-width: 768px) and (prefers-reduced-motion: reduce) {
  nav.show a {
    animation: none;
    opacity: 1;
    transform: none;
  }
}

/* Global btn ends here */