@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700;800;900&family=Bebas+Neue&display=swap');

/* ============================================================================
   ISHEAC 2026 - PREMIUM GLOBAL STYLE SYSTEM
   ============================================================================ */

:root {
  /* Color Palette */
  --bg-dark: #070b15;
  --bg-nav: rgba(10, 14, 26, 0.95);
  --primary-blue: #0575E6;
  --secondary-blue: #00f2fe;
  --royal-dark: #17374c;
  --accent-red: #d90429;
  --accent-gold: #f59e0b;
  --text-white: #ffffff;
  --text-gray: #cbd5e1;
  --text-dark: #0f172a;
  
  /* Font Families */
  --font-title: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  background: var(--bg-dark);
  color: var(--text-white);
  overflow-x: hidden;
  line-height: 1.6;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: var(--royal-dark);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary-blue);
}

/* ===== GRADIENT BACKGROUND MESH ===== */
.glow-bg {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ===== TOP BANNER ===== */
.top-banner {
  width: 100%;
  background: linear-gradient(90deg, #b91c1c, #dc2626, #b91c1c);
  color: #fff;
  text-align: center;
  padding: 10px 15px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 15px;
  position: relative;
  z-index: 9999;
  box-shadow: 0 4px 10px rgba(0,0,0,.2);
  font-family: var(--font-title);
  font-size: 14px;
}
.top-banner strong {
  font-weight: 800;
}
.blink {
  color: #fde047;
  font-weight: 900;
  animation: softBlink 1s infinite;
}
@keyframes softBlink {
  0%, 100% { opacity: 1; text-shadow: 0 0 10px rgba(253, 224, 71, 0.8); }
  50% { opacity: .3; }
}
.banner-btn {
  background: #fff;
  color: #b91c1c;
  padding: 4px 14px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 12px;
  transition: all .2s ease;
}
.banner-btn:hover {
  background: #fde047;
  color: #000;
}

/* ===== NAVBAR ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-nav);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--primary-blue);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
  transition: all .3s ease;
}
.navbar.scrolled {
  background: #05080f;
  border-bottom-color: var(--secondary-blue);
}
.nav-inner {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 70px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #fff;
}
.nav-logo img {
  height: 48px;
  width: auto;
}
.nav-menu {
  display: flex;
  list-style: none;
  gap: 5px;
}
.nav-menu > li {
  position: relative;
}
.nav-menu > li > a {
  display: block;
  padding: 23px 14px;
  font-family: var(--font-title);
  font-size: 13.5px;
  font-weight: 700;
  text-transform: uppercase;
  color: #a4b3c6;
  text-decoration: none;
  letter-spacing: .5px;
  transition: all .3s ease;
  white-space: nowrap;
}
.nav-menu > li > a:hover, 
.nav-menu > li > a.active {
  color: #fff;
  background: rgba(5, 117, 230, 0.15);
}

/* DROPDOWN */
.nav-menu > li > .dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: #0c1222;
  border-radius: 0 0 10px 10px;
  box-shadow: 0 15px 40px rgba(0,0,0,.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all .3s ease;
  z-index: 100;
  border-top: 3px solid var(--primary-blue);
  border-left: 1px solid rgba(255,255,255,0.05);
  border-right: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.nav-menu > li:hover > .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown a {
  display: block;
  padding: 12px 20px;
  color: #a4b3c6;
  text-decoration: none;
  font-family: var(--font-title);
  font-size: 13.5px;
  font-weight: 600;
  transition: all .2s ease;
}
.dropdown a:hover {
  background: rgba(5, 117, 230, 0.1);
  color: #fff;
  padding-left: 25px;
}

/* LANGUAGE TOGGLER */
.lang-select {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-left: 15px;
}
.lang-btn {
  text-decoration: none;
  color: #a4b3c6;
  font-size: 12.5px;
  font-weight: 800;
  text-transform: uppercase;
  padding: 4px 8px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 4px;
  transition: all 0.3s;
}
.lang-btn:hover, .lang-btn.active {
  color: #fff;
  border-color: var(--secondary-blue);
  background: rgba(0, 242, 254, 0.1);
}

/* MOBILE TOGGLE */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: #fff;
  margin: 5px 0;
  transition: .3s;
}

/* ===== HEADER HERO SECTION ===== */
.header-section {
  position: relative;
  background: #ffffff;
  padding: 50px 20px;
  text-align: center;
  border-bottom: 2px solid var(--secondary-blue);
  box-shadow: 0 10px 30px rgba(0, 198, 251, 0.05);
  overflow: hidden;
}
.header-section .watermark {
  position: absolute;
  top: 55%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 260px;
  font-weight: 900;
  color: rgba(5, 117, 230, 0.04);
  line-height: 0;
  z-index: 0;
  pointer-events: none;
  user-select: none;
  font-family: var(--font-title);
}
.header-content {
  position: relative;
  z-index: 2;
}
.header-title {
  font-family: var(--font-title);
  font-size: 28px;
  font-weight: 900;
  text-transform: uppercase;
  background: linear-gradient(to right, #021B79, var(--primary-blue), var(--secondary-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
  line-height: 1.2;
}
.header-title .highlight {
  font-size: 46px;
  font-weight: 900;
  text-shadow: 2px 2px 10px rgba(0, 242, 254, 0.2);
}
.header-date {
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 700;
  color: var(--royal-dark);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
}
.header-date::before, .header-date::after {
  content: '';
  width: 30px;
  height: 2px;
  background: linear-gradient(to right, var(--secondary-blue), var(--primary-blue));
}

/* ===== MAIN CONTENT PAGE WRAPPER ===== */
.page-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
  position: relative;
  z-index: 10;
}
.page-title {
  font-family: var(--font-title);
  font-size: 38px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 50px;
  position: relative;
  text-transform: uppercase;
}
.page-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(to right, var(--accent-red), var(--primary-blue));
  margin: 15px auto 0;
  border-radius: 2px;
}

/* ===== 3D PERSPECTIVE HOMEPAGE LAYOUT ===== */
.perspective-wrapper {
  perspective: 1200px;
  perspective-origin: 50% 50%;
}
.scroll-section {
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.8s cubic-bezier(.25,.46,.45,.94), opacity 0.8s ease;
  opacity: 0;
  will-change: transform, opacity;
}
.scroll-section.visible {
  opacity: 1;
  transform: translateZ(0) rotateX(0);
}
.scroll-section.from-left { transform: translateX(-80px) rotateY(8deg) translateZ(-100px); }
.scroll-section.from-right { transform: translateX(80px) rotateY(-8deg) translateZ(-100px); }
.scroll-section.from-bottom { transform: translateY(60px) rotateX(5deg) translateZ(-80px); }
.scroll-section.from-left.visible,
.scroll-section.from-right.visible,
.scroll-section.from-bottom.visible {
  transform: translateX(0) rotateY(0) rotateX(0) translateZ(0);
}

.two-column-layout {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 40px;
  max-width: 1300px;
  margin: 0 auto;
  align-items: start;
}
.sticky-col {
  position: sticky;
  top: 90px;
  z-index: 10;
}
.scroll-col {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

/* ===== OFFICIAL LETTER CARD ===== */
.letter-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  border-radius: 16px;
  border-top: 8px solid var(--royal-dark);
  box-shadow: 0 30px 60px rgba(0,0,0,0.5);
  overflow: hidden;
  color: #1e293b;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}
.letter-card::-webkit-scrollbar { width: 6px; }
.letter-card::-webkit-scrollbar-thumb { background: rgba(23,55,76,.3); border-radius: 3px; }

.letter-header {
  padding: 40px 40px 20px;
  text-align: center;
  border-bottom: 2px solid rgba(23,55,76,0.12);
}
.letter-header h1 {
  font-family: var(--font-title);
  color: var(--royal-dark);
  font-size: 24px;
  font-weight: 800;
  text-transform: uppercase;
  margin: 0 0 10px;
  line-height: 1.3;
}
.letter-header h2 {
  font-size: 15px;
  color: #475569;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.letter-body {
  padding: 35px 40px 40px;
}
.letter-body .salutation {
  font-size: 17px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 20px;
}
.letter-body p {
  font-size: 14.5px;
  line-height: 1.8;
  text-align: justify;
  margin-bottom: 15px;
  font-weight: 500;
}
.letter-body .bold {
  font-weight: 800;
  color: #0f172a;
}
.letter-body .hl {
  font-weight: 800;
  color: var(--royal-dark);
  background: rgba(23,55,76,.06);
  padding: 2px 6px;
  border-radius: 4px;
}
.letter-footer {
  margin-top: 30px;
  text-align: right;
}
.letter-footer .sig-name {
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 800;
  color: var(--royal-dark);
}
.letter-footer .sig-title {
  font-size: 14px;
  font-weight: 700;
  color: #475569;
}

/* ===== DATES WIDGET & CARDS ===== */
.dates-widget {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  padding: 30px 20px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.dates-widget h3 {
  font-family: var(--font-title);
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 20px;
}
.dates-list {
  display: flex;
  flex-direction: column;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(255,255,255,0.02);
}
.date-card {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255,255,255,.05);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.date-card:last-child { border: 0; }
.d-date {
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 2px;
}
.d-desc {
  font-size: 12.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
}

.c-purple { background: rgba(139,92,246,.08); }
.c-purple .d-date { color: #a78bfa; }
.c-purple .d-desc { color: #c4b5fd; }

.c-blue { background: rgba(14,165,233,.08); }
.c-blue .d-date { color: #38bdf8; }
.c-blue .d-desc { color: #7dd3fc; }

.c-green { background: rgba(16,185,129,.08); }
.c-green .d-date { color: #34d399; }
.c-green .d-desc { color: #6ee7b7; }

.c-dark { background: linear-gradient(135deg, #17374c, #0f2433); }
.c-dark .d-date { color: #fff; font-size: 18px; }
.c-dark .d-desc { color: #00b4d8; }

.c-orange { background: rgba(245,158,11,.08); }
.c-orange .d-date { color: #fbbf24; }
.c-orange .d-desc { color: #fcd34d; }

.c-red { background: rgba(244,63,94,.08); }
.c-red .d-date { color: #fb7185; }
.c-red .d-desc { color: #fda4af; }

.register-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 20px;
  background: linear-gradient(135deg, var(--accent-red), #900015);
  color: #fff;
  padding: 14px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 14px;
  transition: .3s;
  box-shadow: 0 8px 20px rgba(217,4,41,.3);
  border: 1px solid rgba(255,255,255,0.1);
}
.register-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(217,4,41,.5);
}

/* ===== ONUR KATILIMCILARI SPACE BAR ===== */
.honor-section {
  margin: 40px 0;
  text-align: center;
}
.space-ribbon {
  background: #02040a;
  background-image: 
    radial-gradient(1px 1px at 10% 20%, white, transparent),
    radial-gradient(1px 1px at 70% 30%, rgba(255,255,255,0.8), transparent),
    radial-gradient(circle at 20% 50%, rgba(5, 117, 230, 0.15), transparent 40%),
    radial-gradient(circle at 80% 50%, rgba(0, 210, 255, 0.1), transparent 40%);
  padding: 30px;
  border-radius: 12px;
  display: flex;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.05);
}
.star-box {
  position: relative;
  padding: 12px 40px;
  border-radius: 8px;
  overflow: hidden;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 0 20px rgba(0, 210, 255, 0.15);
}
.star-box::before {
  content: '';
  position: absolute;
  top: -100%; left: -100%;
  width: 300%; height: 300%;
  background: conic-gradient(transparent, transparent 75%, #00d2ff 85%, #3a7bd5 100%);
  animation: rotate-star 4s linear infinite;
  z-index: 1;
}
.star-box::after {
  content: '';
  position: absolute;
  inset: 1.5px;
  background: #02040a;
  border-radius: 6px;
  z-index: 2;
}
.star-text {
  position: relative;
  z-index: 3;
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 3px;
  color: #fff;
  text-shadow: 0 0 10px rgba(0, 210, 255, 0.6);
  text-transform: uppercase;
}
@keyframes rotate-star {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ===== ONUR KATILIMCILARI CAROUSEL ===== */
.carousel-wrapper {
  max-width: 1100px;
  margin: 0 auto 50px;
  position: relative;
  overflow: hidden;
  padding: 20px 0;
}
.carousel-track {
  display: flex;
  gap: 20px;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}
.carousel-slide {
  flex: 0 0 calc(33.333% - 14px);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
  transition: all 0.3s;
}
.carousel-slide:hover {
  transform: translateY(-5px);
  border-color: var(--primary-blue);
  box-shadow: 0 15px 30px rgba(5,117,230,0.2);
}
.carousel-slide img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== COMMITTEES / KURULLAR PAGE ===== */
.committee-box {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}
.vip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  margin-bottom: 50px;
}
.vip-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 30px 20px;
  text-align: center;
  transition: all 0.3s ease;
}
.vip-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}
.vip-border-gold { border-top: 5px solid var(--accent-gold); }
.vip-border-red { border-top: 5px solid var(--accent-red); }
.vip-border-blue { border-top: 5px solid var(--primary-blue); }

.vip-role {
  font-family: var(--font-title);
  font-size: 13px;
  color: #a4b3c6;
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.vip-name {
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.3;
}
.vip-inst {
  font-size: 13.5px;
  color: #94a3b8;
  font-style: italic;
}

.sub-section-title {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 800;
  margin: 50px 0 25px;
  text-align: center;
  display: flex;
  align-items: center;
  gap: 15px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.sub-section-title::before, .sub-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
}

.committee-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.member-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  transition: all 0.3s ease;
}
.member-card:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--primary-blue);
  transform: translateY(-3px);
}
.m-name {
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 5px;
}
.m-inst {
  font-size: 12.5px;
  color: #94a3b8;
}

.highlight-member { border-left: 3px solid var(--primary-blue); }
.art-member { border-left: 3px solid var(--accent-gold); }
.support-member { border-left: 3px solid #64748b; }

.student-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 15px;
}
.student-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  padding: 15px;
  border-left: 4px solid var(--accent-gold);
  transition: all 0.3s;
}
.student-card:hover {
  transform: translateY(-3px);
  border-left-color: var(--accent-red);
  background: rgba(255,255,255,0.05);
}
.s-name {
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 700;
  color: #fff;
}
.s-inst {
  font-size: 12px;
  color: #64748b;
}

/* ===== ACCORDION / SSS PAGE ===== */
.accordion-wrapper {
  max-width: 900px;
  margin: 0 auto;
}
.accordion-item {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  margin-bottom: 15px;
  overflow: hidden;
  transition: all 0.3s;
}
.accordion-header {
  padding: 20px 25px;
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  transition: background 0.3s;
}
.accordion-header:hover {
  background: rgba(5, 117, 230, 0.05);
}
.accordion-icon {
  font-size: 14px;
  transition: transform 0.3s ease;
  color: var(--primary-blue);
}
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  background: rgba(0,0,0,0.1);
}
.accordion-inner {
  padding: 20px 25px;
  font-size: 14.5px;
  color: #a4b3c6;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.accordion-item.active {
  border-color: var(--primary-blue);
}
.accordion-item.active .accordion-header {
  background: rgba(5, 117, 230, 0.08);
}
.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

/* ===== TABLES & FORMS / PROGRAM & REGISTRATION ===== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.08);
}
.premium-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14.5px;
  background: rgba(255,255,255,0.02);
}
.premium-table th {
  background: #0f172a;
  padding: 16px 20px;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #fff;
  border-bottom: 2px solid var(--primary-blue);
}
.premium-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  color: #cbd5e1;
}
.premium-table tr:hover td {
  background: rgba(255,255,255,0.02);
  color: #fff;
}

.premium-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 35px;
  box-shadow: 0 15px 40px rgba(0,0,0,0.3);
  margin-bottom: 30px;
}
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 14.5px;
  margin-bottom: 8px;
  color: #fff;
}
.form-control {
  width: 100%;
  background: rgba(0,0,0,0.2) !important;
  border: 1.5px solid rgba(255,255,255,0.15) !important;
  border-radius: 8px !important;
  padding: 12px 16px !important;
  color: #fff !important;
  font-family: var(--font-body);
  font-size: 14px;
  transition: all 0.3s;
}
.form-control:focus {
  border-color: var(--primary-blue) !important;
  box-shadow: 0 0 0 3px rgba(5, 117, 230, 0.15) !important;
  outline: none;
}

.btn-premium {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
  color: #000;
  font-family: var(--font-title);
  font-weight: 800;
  padding: 12px 28px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
  box-shadow: 0 5px 15px rgba(0, 242, 254, 0.2);
}
.btn-premium:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 242, 254, 0.4);
}

/* ===== LIGHTBOX / E-SERGI ===== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
  margin-top: 30px;
}
.gallery-item {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
  transition: all 0.3s ease;
  cursor: pointer;
}
.gallery-item:hover {
  transform: scale(1.03) translateY(-5px);
  border-color: var(--primary-blue);
  box-shadow: 0 15px 30px rgba(5,117,230,0.25);
}
.gallery-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}
.gallery-info {
  padding: 15px;
  text-align: center;
}
.gallery-info h4 {
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 5px;
}
.gallery-info p {
  font-size: 13px;
  color: #a4b3c6;
  font-style: italic;
}

/* LIGHTBOX MODAL */
.lightbox-modal {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.95);
  z-index: 10000;
  display: none;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
.lightbox-content {
  max-width: 90%;
  max-height: 80%;
  position: relative;
}
.lightbox-content img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.8);
}
.lightbox-caption {
  color: #fff;
  font-family: var(--font-title);
  margin-top: 15px;
  text-align: center;
}
.lightbox-close {
  position: absolute;
  top: 25px; right: 35px;
  color: #fff;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  user-select: none;
  transition: 0.3s;
}
.lightbox-close:hover {
  color: var(--accent-red);
}

/* ===== SPONSORS PAGE ===== */
.sponsors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 30px;
  justify-items: center;
  align-items: center;
}
.sponsor-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 20px;
  width: 100%;
  height: 140px;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.3s;
}
.sponsor-card:hover {
  background: #fff;
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(255,255,255,0.1);
}
.sponsor-card img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: filter 0.3s;
}

/* ===== SITE FOOTER ===== */
.site-footer {
  background: #030712;
  border-top: 1px solid rgba(255,255,255,.05);
  padding: 30px 0;
  color: #64748b;
  font-size: 13.5px;
  text-align: center;
  position: relative;
  z-index: 10;
}
.footer-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}
.footer-inner span {
  color: #cbd5e1;
  font-weight: 600;
}
.footer-inner a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-inner a:hover {
  color: var(--secondary-blue);
}

/* ===== RESPONSIVE STYLES ===== */
@media(max-width:992px){
  .two-column-layout {
    grid-template-columns: 1fr;
  }
  .sticky-col {
    position: relative;
    top: 0;
  }
  .letter-card {
    max-height: none;
    overflow-y: visible;
  }
  .carousel-slide {
    flex: 0 0 calc(50% - 10px);
  }
}

@media(max-width:768px){
  .nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    position: absolute;
    top: 70px;
    left: 0;
    background: #0a0e1a;
    border-bottom: 2px solid var(--primary-blue);
    padding: 10px 0;
    box-shadow: 0 15px 30px rgba(0,0,0,0.5);
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-menu > li > a {
    padding: 15px 25px;
  }
  .nav-menu > li > .dropdown {
    position: static;
    display: block;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 0;
    background: rgba(255,255,255,0.02);
    padding-left: 20px;
    border-radius: 0;
  }
  .menu-toggle {
    display: block;
  }
  .header-title { font-size: 20px; }
  .header-title .highlight { font-size: 34px; }
  .header-date { font-size: 13px; letter-spacing: 2px; }
  .letter-header { padding: 30px 20px 15px; }
  .letter-header h1 { font-size: 20px; }
  .letter-body { padding: 25px 20px; }
  .letter-body p { text-align: left; }
  .top-banner { flex-direction: column; gap: 8px; }
  .carousel-slide {
    flex: 0 0 100%;
  }
  .star-text { font-size: 16px; letter-spacing: 1.5px; }
  .star-box { padding: 10px 25px; }
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
  .page-title { font-size: 28px; }
  .committee-box { padding: 20px; }
}