@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;500;700&display=swap');

:root {
  --white: #ffffff;
  --silver: #e5e5e5;
  --dark: #111;
  --gray: #666;
  --focus: #000;
  --error: #d32f2f;
  --success: #2e7d32;
}

* {
  box-sizing: border-box;
  font-family: 'Montserrat', sans-serif;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--dark);
  line-height: 1.5;
}

/* ================= HEADER ================= */
.header {
  position: sticky;
  top: 0;
  background: var(--white);
  z-index: 100;
  padding: 20px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--silver);
}

.logo {
  font-weight: 700;
  letter-spacing: 1px;
}

/* ================= NAV DESKTOP ================= */
.nav-desktop button {
  background: none;
  border: none;
  margin-left: 24px;
  cursor: pointer;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

.nav-desktop button::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--dark);
  transition: width 0.3s ease;
}

.nav-desktop button:hover::after {
  width: 100%;
}

/* ================= HAMBURGER ================= */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.hamburger span {
  width: 26px;
  height: 3px;
  background: var(--dark);
  margin: 4px 0;
  transition: 0.4s;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* ================= MOBILE NAV ================= */
.nav-mobile {
  position: fixed;
  top: 0;
  right: -100%;
  width: 75%;
  height: 100vh;
  background: var(--white);
  padding: 90px 30px;
  transition: right 0.5s ease;
  box-shadow: -10px 0 30px rgba(0,0,0,0.1);
}

.nav-mobile.open {
  right: 0;
}

.nav-mobile button {
  display: block;
  margin-bottom: 25px;
  font-size: 1.2rem;
  background: none;
  border: none;
  cursor: pointer;
}

/* ================= CONTENT ================= */
.content {
  padding: 80px 20px;
  max-width: 900px;
  margin: auto;
  animation: fadeSlide 0.6s ease;
}

/* ================= FORM ================= */
form {
  display: grid;
  gap: 16px;
  max-width: 500px;
}

input,
textarea {
  padding: 14px;
  border: 1px solid var(--silver);
  font-size: 1rem;
  transition: border 0.3s ease, box-shadow 0.3s ease;
  border-radius: 4px;
}

input::placeholder,
textarea::placeholder {
  color: #aaa;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--focus);
  box-shadow: 0 0 0 2px rgba(0,0,0,0.08);
}

input:invalid {
  border-color: var(--error);
}

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

button.submit {
  background: var(--dark);
  color: var(--white);
  padding: 14px;
  border: none;
  cursor: pointer;
  font-weight: 500;
  letter-spacing: 0.5px;
  transition: background 0.3s ease, transform 0.2s ease;
}

button.submit:hover {
  background: #333;
  transform: translateY(-1px);
}

button.submit:active {
  transform: translateY(0);
}

button.submit:disabled {
  background: #999;
  cursor: not-allowed;
}

/* ================= FOOTER ================= */
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
  padding: 10px;
}

.footer-left,
.footer-right {
  font-size: 0.9rem;
}

/* ================= SOCIALS ================= */
.socials a {
  color: var(--dark);
  font-size: 1.5rem;
  margin: 0 12px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.socials a:hover {
  transform: scale(1.2);
  opacity: 0.8;
}

/* ================= GALLERY ================= */
.gallery-section {
  text-align: center;
}

.gallery-desc {
  color: var(--gray);
  margin-bottom: 40px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.gallery-item {
  width: 100%;
  cursor: pointer;
  border-radius: 6px;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  border: 5px solid lightgray;
  border-top: 8px solid lightgray;
  padding: 10px;
  background: #f0f0f0;
}

.gallery-item:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

/* ================= LIGHTBOX ================= */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
  z-index: 999;
}

.lightbox.open {
  opacity: 1;
  pointer-events: all;
}

.lightbox-img {
  max-width: 90%;
  max-height: 90%;
  animation: zoomIn 0.4s ease;
}

.lightbox-close {
  position: absolute;
  top: 30px;
  right: 40px;
  font-size: 2.5rem;
  color: #fff;
  cursor: pointer;
}

/* ================= ANIMATIONS ================= */
@keyframes zoomIn {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes fadeSlide {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================= RESPONSIVE ================= */
@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }
  .hamburger {
    display: flex;
  }
}

@media (max-width: 600px) {
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}