/* ============ GLOBAL ============ */

* {
  box-sizing: border-box;
  transition: 0.25s ease;
}
/* ============================================================= */
/* ⭐ macOS Black + Bluish Premium Theme — FINAL COMPLETE CSS     */
/* ============================================================= */

/* GLOBAL */
* {
  box-sizing: border-box;
  transition: 0.25s ease;
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  background: radial-gradient(circle at top, #0b0f1a 0%, #06070d 60%, #000000 100%);
  color: #e8ecff;
  min-height: 100vh;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-thumb { background: #3b57ff; border-radius: 4px; }

/* ============================================================= */
/* ⭐ NAVBAR — Perfect Center + macOS Glass Finish               */
/* ============================================================= */

.navbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 12, 20, 0.85);
  backdrop-filter: blur(26px) brightness(1.1);
  -webkit-backdrop-filter: blur(26px) brightness(1.1);
  padding: 16px 24px;
  border-bottom: 1px solid rgba(110, 135, 255, 0.18);
  box-shadow: 0 6px 20px rgba(0,0,0,0.55);
}

/* ⭐ Flex layout: center title perfectly */
.nav-content {
  max-width: 1280px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: center;  /* This centers the title */
  position: relative;        /* For right buttons */
}

/* ⭐ Right side buttons always on the right */
.nav-right {
  position: absolute;
  right: 0;
  display: flex;
  gap: 10px;
}

/* Title */
.nav-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.8px;
  color: #a8c7ff;
  text-shadow: 0 0 10px rgba(120,140,255,0.6);
}

/* ============================================================= */
/* SIDEBAR */
.sidebar {
  width: 260px;
  padding: 18px;
  background: rgba(12, 16, 32, 0.9);
  border-radius: 18px;
  border: 1px solid rgba(120,150,255,0.25);
  box-shadow: 0 20px 60px rgba(0,0,0,0.7);
}

/* SUBJECT CARDS */
.subject-item {
  padding: 10px 14px;
  border-radius: 12px;
  margin-bottom: 12px;
  background: rgba(220,230,255,0.08);
  border-left: 4px solid #4e7bff;
  color: #dce3ff;
  box-shadow: 0 0 8px rgba(80,120,255,0.25);
}

.subject-item:hover {
  transform: translateX(8px) scale(1.02);
  background: rgba(220,230,255,0.12);
  box-shadow: 0 0 20px rgba(110,160,255,0.55);
}

/* Add Subject */
.sidebar-add-btn {
  width: 100%;
  padding: 10px;
  border-radius: 14px;
  background: linear-gradient(135deg, #3b4bff, #6a2bff);
  color: white;
  font-weight: 600;
  box-shadow: 0 14px 28px rgba(40,60,255,0.45);
}
.sidebar-add-btn:hover {
  transform: translateY(-2px);
}

/* ============================================================= */
/* MAIN DASHBOARD PANEL — macOS Gloss + Neon Edge                */
/* ============================================================= */

.main {
  flex: 1;
  padding: 26px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(14,16,30,0.9), rgba(28,32,60,0.92));
  border: 1px solid rgba(130,150,255,0.25);
  box-shadow: 0 20px 60px rgba(0,0,0,0.85),
              inset 0 0 25px rgba(255,255,255,0.05);
}

.main:hover {
  box-shadow: 0 0 40px rgba(110,150,255,0.35);
}

/* ============================================================= */
/* TOPIC CARDS */
.topic-card {
  background: rgba(35,45,85,0.45);
  border-radius: 16px;
  border: 1px solid rgba(120,140,255,0.4);
  margin-bottom: 12px;
  box-shadow: 0 0 14px rgba(110,150,255,0.25);
}

.topic-card:hover {
  transform: scale(1.015);
  box-shadow: 0 0 26px rgba(110,150,255,0.55);
}

/* Header */
.topic-header {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(120,140,255,0.18);
}

/* Remove white box from toggle */
.topic-toggle-btn {
  background: none !important;
  border: none !important;
}

/* ============================================================= */
/* SUBTOPICS */
.subtopic-item {
  background: rgba(55,70,120,0.45);
  padding: 6px 12px;
  border-radius: 10px;
  border: 1px solid rgba(140,160,255,0.35);
}
.subtopic-item:hover {
  transform: scale(1.03);
  box-shadow: 0 0 18px rgba(120,150,255,0.65);
}

/* NOTES */
.notes-area {
  width: 100%;
  min-height: 130px;
  padding: 12px;
  border-radius: 14px;
  background: rgba(25,30,50,0.7);
  border: 1px solid rgba(120,140,255,0.4);
  color: #dce3ff;
}

/* BUTTONS */
.btn-primary {
  background: linear-gradient(135deg, #3a4aff, #6a2bff);
  color: white;
  padding: 10px 16px;
  border-radius: 12px;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(120,140,255,0.5);
}

/* ============================================================= */
/* RESPONSIVE */
@media (max-width: 900px) {
  .container { flex-direction: column; }
  .sidebar { width: 100%; overflow-x: auto; }
  .subject-item { min-width: 150px; }
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  min-height: 100vh;
  /* Ensure full viewport width coverage */
  width: 100vw; 
  background: radial-gradient(circle at top, #3d5dff 0%, #1d0c3f 35%, #050816 100%);
  color: #f5f7ff;
}

::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #4b5dff;
  border-radius: 4px;
}

/* ============ NAVBAR (Updated for Centering and Top-Right Logout) ============ */

.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 12, 34, 0.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  padding: 14px 28px;
}

.nav-content {
  /* Increased max-width for better screen fill */
  max-width: 1280px; 
  margin: 0 auto; /* Ensures the navbar content is centered */
  display: flex;
  align-items: center;
  /* KEY CHANGE: Pushes the logo/title group and the logout button to opposite ends */
  justify-content: space-between; 
  /* gap: 10px; is managed by the inner div now */
}

/* We don't need to change .nav-logo or .nav-title as they are now grouped correctly in HTML */

.nav-logo {
  font-size: 26px;
  color: #7bdcff;
}

.nav-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: 0;
}

/* ============ LAYOUT (Updated for better screen fill) ============ */

.container {
  /* Increased max-width to match the nav-content and better fill wide screens */
  max-width: 1280px; 
  margin: 18px auto 40px;
  display: flex;
  gap: 18px;
}

/* ============ SIDEBAR ============ */

.sidebar {
  width: 260px;
  padding: 18px 18px 20px;
  background: rgba(9, 16, 51, 0.92);
  border-radius: 18px;
  border: 1px solid rgba(124, 160, 255, 0.4);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
}

.sidebar-title {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
  color: #e2e7ff;
}

.sidebar-icon {
  font-size: 20px;
  color: #7bdcff;
}

.subject-ul {
  list-style: none;
  padding: 0;
  margin: 0;
  flex: 1;
  overflow-y: auto;
}

/* SUBJECT ITEMS (Consolidated) */

.subject-item {
  display: flex; /* Added for edit/delete buttons */
  justify-content: space-between; /* Added for edit/delete buttons */
  align-items: center;
  padding: 10px 15px; /* Unified padding */
  margin-bottom: 10px;
  border-radius: 12px;
  font-size: 14px;
  cursor: pointer;
  font-weight: 600;
  border-left: 4px solid var(--subject-accent);
  background: var(--subject-bg);
  color: #101624;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease; /* Ensure transition is smooth */
}

.subject-item:hover {
  transform: translateX(6px) translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.55);
  background: var(--subject-bg-hover);
}

.subject-info {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.subject-name-text {
    font-weight: 600;
}

.subject-date-text {
    font-size: 11px;
    opacity: 0.8;
    margin-top: 2px;
}

.subject-actions {
    display: flex;
    gap: 5px;
    margin-left: 10px;
}

.btn-icon {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: background-color 0.2s, opacity 0.2s;
    opacity: 0.7;
}

.btn-icon:hover {
    opacity: 1;
    background-color: rgba(255, 255, 255, 0.1); 
}


/* Pastel themes */

.pastel-1 {
  --subject-bg: rgba(255, 231, 240, 0.95);
  --subject-bg-hover: rgba(255, 219, 236, 1);
  --subject-accent: #ff8cbc;
}
.pastel-2 {
  --subject-bg: rgba(231, 244, 255, 0.95);
  --subject-bg-hover: rgba(212, 235, 255, 1);
  --subject-accent: #6bbaff;
}
.pastel-3 {
  --subject-bg: rgba(232, 255, 241, 0.95);
  --subject-bg-hover: rgba(211, 255, 231, 1);
  --subject-accent: #5edca5;
}
.pastel-4 {
  --subject-bg: rgba(255, 245, 228, 0.95);
  --subject-bg-hover: rgba(255, 236, 212, 1);
  --subject-accent: #ffba63;
}
.pastel-5 {
  --subject-bg: rgba(255, 251, 225, 0.95);
  --subject-bg-hover: rgba(255, 246, 199, 1);
  --subject-accent: #ffe066;
}
.pastel-6 {
  --subject-bg: rgba(243, 237, 255, 0.95);
  --subject-bg-hover: rgba(232, 223, 255, 1);
  --subject-accent: #b28cff;
}

/* Add subject button */

.sidebar-add-btn {
  margin-top: 14px;
  padding: 10px 12px;
  border-radius: 12px;
  border: none;
  outline: none;
  background: linear-gradient(135deg, #6c63ff, #ff6584);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.55);
}

.sidebar-add-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.7);
}

/* ============ MAIN CONTENT ============ */

.main {
  flex: 1;
  min-height: 520px;
  padding: 22px 24px 26px;
  border-radius: 20px;
  background: radial-gradient(circle at top left, rgba(111, 66, 193, 0.35), rgba(14, 19, 61, 0.96));
  border: 1px solid rgba(129, 140, 248, 0.5);
  box-shadow: 0 22px 55px rgba(0, 0, 0, 0.8);
  overflow-y: auto;
}

.main-title {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-title .material-icons {
  font-size: 24px;
  color: #7bdcff;
}

.section-heading {
  margin-top: 26px;
  margin-bottom: 10px;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #e5e7ff;
}

/* ============ GLASS CARDS (common) ============ */

.section-card,
.glass-card,
.dash-card {
  background: linear-gradient(135deg, rgba(16, 24, 75, 0.96), rgba(36, 17, 81, 0.96));
  border-radius: 18px;
  padding: 18px 18px 16px;
  border: 1px solid rgba(165, 180, 252, 0.55);
  box-shadow:
    0 18px 40px rgba(0, 0, 0, 0.85),
    0 0 0 1px rgba(15, 23, 42, 0.9);
  margin-bottom: 18px;
}

.section-card {
  margin-bottom: 20px;
}


.section-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #eef2ff;
}

.section-title .material-icons {
  font-size: 20px;
  color: #7bdcff;
}

/* ============ TOP ROW (Back + Subject) ============ */

.top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.subject-header {
  font-size: 22px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.subject-header span {
  font-size: 22px;
  color: #7bdcff;
}

/* Back button */

.back-btn {
  padding: 8px 14px;
}

/* ============ TOPICS + SUBTOPICS ============ */

.topic-list {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
}

/* Topic card (Unified Styling) */

.topic-card {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(15, 23, 42, 0.95)); 
  border-radius: 16px;
  margin-bottom: 10px;
  padding: 0; /* Remove initial padding */
  border: 1px solid rgba(129, 140, 248, 0.8);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.85);
  overflow: hidden;
}

/* Topic header row (Consolidated) */

.topic-header {
  padding: 10px 15px; /* Added 15px side padding */
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.topic-main {
  display: flex;
  align-items: center;
  gap: 10px;
}

.topic-bullet {
  font-size: 18px;
  color: #7bdcff;
}

.topic-name {
  font-size: 15px;
  font-weight: 600;
}

.topic-date {
  font-size: 12px;
  color: #cbd5ff;
}

/* Topic Action buttons (Consolidated) */
.topic-actions {
    display: flex;
    align-items: center;
    gap: 5px;
}

.topic-toggle-btn {
    opacity: 0.9;
    color: #e5e7ff;
    margin-left: 5px;
}

.topic-toggle-btn .material-icons {
  font-size: 20px;
  transform: rotate(0deg);
  transition: transform 0.25s ease;
  color: inherit;
}

.topic-card.open .topic-toggle-btn .material-icons {
  transform: rotate(180deg);
}

/* Topic Details Content */
.topic-details-content {
    padding: 15px 15px 20px 15px; /* Unified padding */
    border-top: 1px solid #454950;
    max-height: 0; 
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.98), rgba(17, 24, 39, 0.98));
}

.topic-card.open .topic-details-content {
    max-height: 800px; /* Large enough value for accordion */
    opacity: 1;
}

/* Subtopic wrapper */
.subtopic-wrapper {
    padding: 0;
    margin-bottom: 15px;
}

/* Subtopic list + item */

.subtopic-list {
  list-style: none;
  margin: 0 0 6px;
  padding: 0;
}

.subtopic-item {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.4), rgba(8, 47, 73, 0.95));
  border-radius: 10px;
  padding: 6px 10px;
  margin-bottom: 6px;
  border: 1px solid rgba(129, 140, 248, 0.8);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.subtopic-name {
  font-weight: 500;
}

.subtopic-date {
  font-size: 11px;
  color: #cbd5ff;
}

/* Add subtopic button */

.add-subtopic-btn {
  margin-top: 2px;
}

/* Topic-Specific Notes/PDF Sections */
.topic-notes-section, .topic-pdf-section {
    margin-top: 15px;
}
.topic-notes-section h5, .topic-pdf-section h5 {
    margin: 5px 0;
}

/* ============ NOTES ============ */

.notes-area {
  width: 100%;
  min-height: 130px;
  margin-top: 4px;
  font-size: 14px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(165, 180, 252, 0.75);
  background: radial-gradient(circle at top, rgba(30, 64, 175, 0.3), rgba(15, 23, 42, 0.9));
  color: #e5e7ff;
  outline: none;
  resize: vertical;
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.9);
}

.notes-area::placeholder {
  color: rgba(191, 219, 254, 0.7);
}

/* ============ BUTTONS ============ */

.btn {
  border-radius: 12px;
  border: none;
  font-size: 13px;
  padding: 9px 14px;
  cursor: pointer;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #a855f7);
  color: #fff;
  box-shadow: 0 12px 28px rgba(88, 28, 135, 0.7);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 32px rgba(88, 28, 135, 0.9);
}

.btn-glass {
  background: rgba(129, 140, 248, 0.12);
  border: 1px solid rgba(129, 140, 248, 0.7);
  color: #e5e7ff;
}

.btn-glass:hover {
  background: rgba(129, 140, 248, 0.28);
}

.btn-green {
  background: linear-gradient(135deg, #22c55e, #14b8a6);
  color: #eaffff;
  box-shadow: 0 12px 28px rgba(4, 120, 87, 0.7);
}

.btn-green:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 34px rgba(4, 120, 87, 0.9);
}

/* Small button (for topic notes/pdfs) */
.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

/* ============ PDF UPLOAD (GENERAL) ============ */

.upload-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: stretch;
  margin-bottom: 14px;
}

.upload-drop {
  flex: 1;
  min-width: 220px;
  border-radius: 14px;
  border: 1px dashed rgba(148, 163, 253, 0.9);
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), rgba(15, 23, 42, 0.96));
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  color: #c7d2fe;
}

.upload-drop:hover {
  border-color: #38bdf8;
  box-shadow: 0 12px 26px rgba(8, 47, 73, 0.8);
}

.upload-drop input[type="file"] {
  display: none;
}

.upload-drop span:first-child {
  font-size: 22px;
  color: #7bdcff;
}

/* ============ PDF UPLOAD (TOPIC) ============ */

.upload-row-topic {
    display: flex;
    gap: 10px;
    align-items: center;
}

.upload-drop-topic {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px dashed #666;
    border-radius: 5px;
    cursor: pointer;
    padding: 8px;
    width: 150px; /* Smaller width for topic level */
    min-height: 50px;
    text-align: center;
    transition: background-color 0.2s;
}

.upload-drop-topic input[type="file"] {
    opacity: 0;
    position: absolute;
    z-index: -1;
}

.upload-drop-topic:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.pdf-list-title {
  margin: 4px 0 10px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #9ca3ff;
}

/* ============ PDF CARDS ============ */

.recent-list {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
}

.pdf-card,
.recent-list li {
  background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.35), rgba(15, 23, 42, 0.95));
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid rgba(129, 140, 248, 0.8);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.85);
  font-size: 14px;
}

.pdf-card:hover,
.recent-list li:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.95);
}

.pdf-icon {
  font-size: 24px;
}

.pdf-file-name {
  display: flex;
  flex-direction: column;
}

.pdf-file-name a {
  color: #bfdbfe;
  font-weight: 600;
  text-decoration: none;
}

.pdf-file-name a:hover {
  color: #e5e7ff;
  text-decoration: underline;
}

.pdf-date {
  margin-left: auto;
  font-size: 12px;
  color: #c4d0ff;
}

/* ============ DASHBOARD GRID ============ */

.dash-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-top: 8px;
  margin-bottom: 10px;
}

.dash-card {
  position: relative;
}

.dash-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
  font-size: 14px;
  color: #e5e7ff;
}

.dash-card-header .material-icons {
  font-size: 20px;
  color: #7bdcff;
}

.dash-number {
  font-size: 28px;
  font-weight: 800;
  margin: 2px 0 0;
}

/* ============ RESPONSIVE ============ */

@media (max-width: 900px) {
  .container {
    flex-direction: column;
    padding: 0 18px; 
    width: auto; 
  }
  .sidebar {
    width: 100%;
    flex-direction: row;
    align-items: flex-start;
    gap: 14px;
    overflow-x: auto; 
  }
  .subject-ul {
    max-height: 180px;
    display: flex; 
    gap: 10px;
    padding-right: 18px;
  }
  .subject-item {
      flex-shrink: 0; 
      min-width: 150px;
  }
}/* ============ NAVBAR (Updated for True Centering using Grid) ============ */

.nav-content {
  max-width: 1280px; 
  margin: 0 auto; /* Keeps the content area centered */
  display: grid; /* CHANGE 1: Use CSS Grid */
  /* CHANGE 2: Define 3 columns: Left Spacer, Center Content, Right Logout */
  grid-template-columns: 1fr auto 1fr; 
  align-items: center;
  padding: 0 10px; /* Optional internal padding */
}

/* 1. Logo/Title Group: Place this in the 2nd (Center) column */
.nav-content > div:first-child {
    /* To push the title group to the center */
    grid-column: 2; 
    display: flex;
    align-items: center;
    gap: 10px;
    /* Ensure the title itself is centered within the 2nd column */
    justify-content: center; 
}

/* 2. Logout Button: Place this in the 3rd (Right) column */
#logoutBtn {
    grid-column: 3; 
    /* Push the button to the far right edge of the 3rd column */
    justify-self: end; 
}
/* FIX: Remove white box around topic toggle button */
.topic-toggle-btn {
  background: none !important;
  border: none !important;
  outline: none !important;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.topic-toggle-btn .material-icons {
  background: none !important;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
}
/* ============================================================= */
/* 🚀 NEON GLOW PREMIUM THEME UPGRADE — Boss Edition by Zara ❤️ */
/* ============================================================= */

/* Smooth global transitions */
* {
  transition: 0.25s ease !important;
}

/* ---------------------- SUBJECT CARDS ------------------------ */

.subject-item {
  position: relative;
  box-shadow: 0 0 10px rgba(124, 160, 255, 0.25), 
              inset 0 0 8px rgba(255, 255, 255, 0.08);
}

.subject-item:hover {
  box-shadow: 
    0 0 18px rgba(135, 206, 250, 0.55),
    0 0 22px rgba(111, 66, 193, 0.45),
    inset 0 0 10px rgba(255, 255, 255, 0.15);
  transform: translateX(8px) translateY(-3px) scale(1.02);
}

/* ---------------------- TOPIC CARDS -------------------------- */

.topic-card {
  border: 1px solid rgba(129, 140, 248, 0.9);
  box-shadow: 
    0 0 14px rgba(80, 120, 255, 0.45),
    inset 0 0 12px rgba(255, 255, 255, 0.10);
}

.topic-card:hover {
  box-shadow:
    0 0 20px rgba(111, 200, 255, 0.75),
    0 0 25px rgba(88, 28, 135, 0.55),
    inset 0 0 14px rgba(255, 255, 255, 0.15);
  transform: scale(1.015);
}

/* Topic Header Glow Line */
.topic-header {
  border-bottom: 1px solid rgba(129, 140, 248, 0.4);
}

.topic-card.open .topic-header {
  background: rgba(59, 130, 246, 0.20);
  box-shadow: inset 0 0 14px rgba(111, 200, 255, 0.3);
}

/* ---------------------- SUBTOPICS ---------------------------- */

.subtopic-item {
  box-shadow: 0 0 12px rgba(90, 170, 255, 0.25);
}

.subtopic-item:hover {
  box-shadow: 0 0 16px rgba(111, 200, 255, 0.65);
  transform: scale(1.03);
}

/* ---------------------- BUTTONS ------------------------------ */

.btn-primary,
.sidebar-add-btn,
.btn-green,
.btn-glass {
  position: relative;
  overflow: hidden;
}

.btn-primary:hover,
.sidebar-add-btn:hover,
.btn-green:hover,
.btn-glass:hover {
  box-shadow: 
    0 0 20px rgba(124, 160, 255, 0.65),
    0 0 30px rgba(255, 100, 140, 0.45);
  transform: translateY(-3px) scale(1.03);
}

/* Neon border animation */
.btn-primary::after,
.sidebar-add-btn::after,
.btn-green::after,
.btn-glass::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow: 0 0 12px rgba(180, 120, 255, 0.35);
  animation: neonPulse 2.4s infinite ease-in-out;
}

@keyframes neonPulse {
  0% { box-shadow: 0 0 8px rgba(180,120,255,0.35); }
  50% { box-shadow: 0 0 22px rgba(120,200,255,0.75); }
  100% { box-shadow: 0 0 8px rgba(180,120,255,0.35); }
}

/* ---------------------- MAIN PANEL --------------------------- */

.main {
  box-shadow:
    0 0 25px rgba(88, 28, 135, 0.55),
    inset 0 0 18px rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(129, 140, 248, 0.55);
}

.main:hover {
  box-shadow:
    0 0 35px rgba(135, 206, 250, 0.45),
    inset 0 0 22px rgba(255, 255, 255, 0.18);
}

/* ---------------------- NAVBAR ------------------------------ */

.navbar {
  border-bottom: 1px solid rgba(255,255,255,0.15);
  box-shadow: 0 0 18px rgba(135, 206, 250, 0.35);
}

.nav-title {
  text-shadow: 0 0 6px rgba(124, 160, 255, 0.8);
}

/* ---------------------- PDF CARDS --------------------------- */

.pdf-card {
  box-shadow: 0 0 14px rgba(111,200,255,0.35);
}

.pdf-card:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 
    0 0 22px rgba(135, 206, 250, 0.75),
    0 0 32px rgba(111, 66, 193, 0.6);
}
/* ============================================================= */
/* ⭐ FINAL FULL WORKING CSS — WITH nav-right + FLEX NAV-CONTENT  */
/* ============================================================= */

/* ============ GLOBAL ============ */
* {
  box-sizing: border-box;
  transition: 0.25s ease;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  min-height: 100vh;
  width: 100vw;
  background: radial-gradient(circle at top, #3d5dff 0%, #1d0c3f 35%, #050816 100%);
  color: #f5f7ff;
}

::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-thumb {
  background: #4b5dff;
  border-radius: 4px;
}

/* ============ NAVBAR ============ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 12, 34, 0.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  padding: 14px 28px;
}

/* ⭐ Updated nav-content (FLEX + centered + right-aligned logout) */
.nav-content {
  max-width: 1200px;
  margin: auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between; /* ⭐ FIX */
}

/* ⭐ Right section inside navbar */
.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto; /* ⭐ Works with flex */
}

.nav-logo {
  font-size: 26px;
  color: #7bdcff;
}
.nav-title {
  font-size: 24px;
  font-weight: 700;
}

/* ============ LAYOUT ============ */
.container {
  max-width: 1280px;
  margin: 18px auto 40px;
  display: flex;
  gap: 18px;
}

/* ============ SIDEBAR ============ */
.sidebar {
  width: 260px;
  padding: 18px;
  background: rgba(9, 16, 51, 0.92);
  border-radius: 18px;
  border: 1px solid rgba(124, 160, 255, 0.4);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.6);
}

.sidebar-title {
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

.subject-ul {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  overflow-y: auto;
}

/* ============ SUBJECT ITEM ============ */
.subject-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 15px;
  margin-bottom: 10px;
  border-radius: 12px;
  font-size: 14px;
  cursor: pointer;
  font-weight: 600;
  border-left: 4px solid var(--subject-accent);
  background: var(--subject-bg);
  color: #101624;
  box-shadow: 0 0 10px rgba(124, 160, 255, 0.25),
              inset 0 0 8px rgba(255, 255, 255, 0.08);
}

.subject-item:hover {
  transform: translateX(8px) translateY(-3px) scale(1.02);
  box-shadow: 
    0 0 18px rgba(135, 206, 250, 0.55),
    0 0 22px rgba(111, 66, 193, 0.45),
    inset 0 0 10px rgba(255, 255, 255, 0.15);
}

/* PASTEL THEMES */
.pastel-1 { --subject-bg: rgba(255,231,240,0.95); --subject-bg-hover: rgba(255,219,236,1); --subject-accent:#ff8cbc;}
.pastel-2 { --subject-bg: rgba(231,244,255,0.95); --subject-bg-hover: rgba(212,235,255,1); --subject-accent:#6bbaff;}
.pastel-3 { --subject-bg: rgba(232,255,241,0.95); --subject-bg-hover: rgba(211,255,231,1); --subject-accent:#5edca5;}
.pastel-4 { --subject-bg: rgba(255,245,228,0.95); --subject-bg-hover: rgba(255,236,212,1); --subject-accent:#ffba63;}
.pastel-5 { --subject-bg: rgba(255,251,225,0.95); --subject-bg-hover: rgba(255,246,199,1); --subject-accent:#ffe066;}
.pastel-6 { --subject-bg: rgba(243,237,255,0.95); --subject-bg-hover: rgba(232,223,255,1); --subject-accent:#b28cff;}

/* ============ ADD SUBJECT BUTTON ============ */
.sidebar-add-btn {
  padding: 10px;
  border-radius: 12px;
  background: linear-gradient(135deg, #6c63ff, #ff6584);
  color: white;
  font-weight: 600;
  box-shadow: 0 12px 30px rgba(0,0,0,0.55);
}
.sidebar-add-btn:hover {
  transform: translateY(-2px);
}

/* ============ MAIN CONTENT ============ */
.main {
  flex: 1;
  padding: 24px;
  border-radius: 20px;
  background: radial-gradient(circle at top left, rgba(111,66,193,0.35), rgba(14,19,61,0.96));
  border: 1px solid rgba(129, 140, 248, 0.5);
  box-shadow: 0 22px 55px rgba(0,0,0,0.8),
              inset 0 0 18px rgba(255, 255, 255, 0.12);
}
.main:hover {
  box-shadow:
    0 0 35px rgba(135, 206, 250, 0.45),
    inset 0 0 22px rgba(255,255,255,0.18);
}

/* ============ TOPIC CARDS ============ */
.topic-card {
  background: linear-gradient(135deg, rgba(59,130,246,0.25), rgba(15,23,42,0.95));
  border-radius: 16px;
  border: 1px solid rgba(129,140,248,0.9);
  box-shadow: 
    0 0 14px rgba(80,120,255,0.45),
    inset 0 0 12px rgba(255,255,255,0.10);
}

.topic-card:hover {
  transform: scale(1.015);
  box-shadow:
    0 0 20px rgba(111,200,255,0.75),
    0 0 25px rgba(88,28,135,0.55),
    inset 0 0 14px rgba(255,255,255,0.15);
}

/* Remove toggle white box */
.topic-toggle-btn {
  background: none !important;
  border: none !important;
}

/* ============ SUBTOPIC ============ */
.subtopic-item {
  background: linear-gradient(135deg, rgba(37,99,235,0.4), rgba(8,47,73,0.95));
  border: 1px solid rgba(129,140,248,0.8);
  border-radius: 10px;
  padding: 6px 10px;
  box-shadow: 0 0 12px rgba(90,170,255,0.25);
}
.subtopic-item:hover {
  transform: scale(1.03);
  box-shadow: 0 0 16px rgba(111,200,255,0.65);
}

/* ============ BUTTONS ============ */

.btn-primary,
.sidebar-add-btn,
.btn-green,
.btn-glass {
  position: relative;
  overflow: hidden;
}

.btn-primary:hover,
.sidebar-add-btn:hover,
.btn-green:hover,
.btn-glass:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 0 20px rgba(124,160,255,0.65);
}

/* Neon pulse */
.btn-primary::after,
.sidebar-add-btn::after,
.btn-green::after,
.btn-glass::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  animation: neonPulse 2.4s infinite ease-in-out;
}

@keyframes neonPulse {
  0% { box-shadow: 0 0 8px rgba(180,120,255,0.35); }
  50% { box-shadow: 0 0 22px rgba(120,200,255,0.75); }
  100% { box-shadow: 0 0 8px rgba(180,120,255,0.35); }
}

/* ============ PDF CARDS ============ */
.pdf-card {
  background: radial-gradient(circle at top left, rgba(59,130,246,0.35), rgba(15,23,42,0.95));
  border: 1px solid rgba(129,140,248,0.8);
  padding: 12px 16px;
  border-radius: 14px;
  box-shadow: 0 0 14px rgba(111,200,255,0.35);
}
.pdf-card:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 
    0 0 22px rgba(135,206,250,0.75),
    0 0 32px rgba(111,66,193,0.6);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .container {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    flex-direction: row;
    overflow-x: auto;
  }
  .subject-item {
    min-width: 150px;
    flex-shrink: 0;
  }
}
/* Must be in your style.css */
.nav-content {
    display: grid;
    grid-template-columns: 1fr auto 1fr; 
    align-items: center; 
    /* ... other styles ... */
}
.nav-left-placeholder {
    grid-column: 1; 
}
.nav-title {
    grid-column: 2;
    margin: 0;
}
.nav-right {
    grid-column: 3;
    justify-self: end; 
    /* ... other styles ... */
}