/* === Theme Variables === */
:root {
  --bg-color: linear-gradient(135deg, #0f0f0f, #1f1f1f);
  --text-color: #ffffff;
  --accent-color: #11998e;
  --accent-hover: #38ef7d;
  --input-bg: #2c2c2c;
  --input-focus: #3a3a3a;
}

body.light-theme {
  --bg-color: linear-gradient(135deg, #ffffff, #eeeeee);
  --text-color: #000000;
  --accent-color: #11998e;
  --accent-hover: #38ef7d;
  --input-bg: #ffffff;
  --input-focus: #f1f1f1;
}

/* === Reset === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* === Body Styling === */
body {
  font-family: 'Segoe UI', sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 50px 15px 30px;
  transition: background 0.3s ease, color 0.3s ease;
  position: relative;
}

/* === Container === */
.container {
  width: 100%;
  max-width: 1200px;
  text-align: center;
}

/* === Theme Button === */
.theme {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100;
}

.themeButton {
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-color);
  border: none;
  border-radius: 50px;
  /* cursor: pointer; */
  font-weight: 600;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.themeButton:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* === Heading === */
h1 {
  font-size: 3rem;
  margin: 60px 0 30px;
  background: linear-gradient(45deg, var(--accent-color), var(--accent-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* === Search Box === */
.search-box {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.search-box input {
  flex: 1 1 300px;
  padding: 14px 18px;
  font-size: 1rem;
  border: none;
  border-radius: 10px;
  background: var(--input-bg);
  color: var(--text-color);
  outline: none;
  transition: background 0.3s;
}

.search-box input:focus {
  background: var(--input-focus);
  box-shadow: 0 0 8px var(--accent-color);
}

.search-box button {
  padding: 14px 24px;
  font-size: 1rem;
  background: linear-gradient(to right, var(--accent-color), var(--accent-hover));
  color: #fff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.search-box button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 50%;
  height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,0.4), transparent);
  transform: skewX(-20deg);
  transition: left 0.5s;
}

.search-box button:hover::before {
  left: 120%;
}

/* === Results Grid === */
.results {
  column-count: 4;
  column-gap: 20px;
  padding: 10px;
}

.results img {
  width: 100%;
  height: auto;
  margin-bottom: 15px;
  border-radius: 10px;
  box-shadow: 0 6px 12px rgba(255, 255, 255, 0.1);
  break-inside: avoid;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.results img:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px var(--accent-color);
}

/* === Responsive === */
@media (max-width: 1200px) {
  .results { column-count: 3; }
}
@media (max-width: 800px) {
  .results { column-count: 2; }
}
@media (max-width: 500px) {
  .results { column-count: 1; }
}

/* === Show More Button === */
.show-more {
  margin: 30px auto 10px;
  padding: 12px 30px;
  background: linear-gradient(to right, var(--accent-color), var(--accent-hover));
  color: #fff;
  font-size: 1rem;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  overflow: hidden;
  position: relative;
}

.show-more::before {
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 50%;
  height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,0.4), transparent);
  transform: skewX(-20deg);
  transition: left 0.5s;
}

.show-more:hover::before {
  left: 120%;
}

.show-more:hover {
  filter: brightness(1.1);
}

/* === Modal === */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 15, 15, 0.95);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(10px);
}

.modal.show {
  display: flex;
}

.modal-image-wrapper {
  max-width: 90%;
  padding-top: 60px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal-content {
  width: 100%;
  border-radius: 10px;
}

.download-btn {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-color);
  padding: 10px 15px;
  font-size: 1rem;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  font-weight: bold;
  backdrop-filter: blur(2px);
  transition: background-color 0.3s ease;
}

.download-btn:hover {
  background-color: var(--accent-color);
}

/* === Modal Close Button === */
.close {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 26px;
  font-weight: bold;
  color: var(--text-color);
  cursor: pointer;
}

/* === Spinner === */
.spinner {
  display: none;
  border: 6px solid #444;
  border-top: 6px solid var(--accent-color);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1500;
}

@keyframes spin {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.backToTop {
  position: fixed;
  bottom: 40px;
  right: 20px;
  z-index: 999;
  display: none;
  background: linear-gradient(to right, var(--accent-color), var(--accent-hover));
  color: white;
  border: none;
  border-radius: 50%;
  padding: 8px 16px;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: opacity 0.4s, transform 0.3s ease;
}

.backToTop:hover {
  transform: scale(1.1);
  filter: brightness(1.2);
}