:root {
    --blue: #1E3A8A;
    --purple: #6B21A8;
    --gold: #D4AF37;
    --white: #ffffff;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

html, body {
    height: 100%;
    margin: 0;
    font-family: Arial, sans-serif;
}

/* Sticky footer layout */
.page-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.content {
    flex: 1;
    padding: 20px;
}

/* ==========================================================================
   Header – Fixed: no breaking text, reduced padding, responsive
   ========================================================================== */

.site-header {
    background: var(--purple);
    color: var(--white);
    padding: 0.8rem 1.2rem;          /* Reduced padding */
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title {
    margin: 0;
    font-size: clamp(1.35rem, 3.8vw, 1.6rem); /* Smaller title */
    font-weight: bold;
    white-space: nowrap;                    /* Prevent breaking */
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 45%;                         /* Limit width so it doesn't push nav */
}

/* Desktop nav */
.main-nav {
    display: flex;
    align-items: center;
    gap: 1.2rem;                           /* Slightly tighter gap */
    flex-wrap: nowrap;
}

.main-nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 0.9rem;                /* Reduced padding on links */
    border-radius: 6px;
    transition: all 0.2s ease;
    white-space: nowrap;                    /* Prevent word break on links */
    font-size: 0.95rem;                     /* Slightly smaller text */
}

.main-nav a:hover {
    color: var(--gold);
    background: rgba(255,255,255,0.08);
}

/* Dropdowns */
.dropdown {
    position: relative;
}

.dropdown-trigger {
    background: none;
    border: none;
    color: var(--white);
    font-weight: 600;
    cursor: pointer;
    padding: 0.5rem 0.9rem;
    font-size: 0.95rem;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    min-width: 220px;
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    z-index: 1000;
}

.dropdown.active .dropdown-menu {
    display: block;
}

.dropdown-section h4 {
    margin: 0.8rem 0 0.4rem;
    color: var(--purple);
    font-size: 0.9rem;
    font-weight: 600;
}

.dropdown-section a {
    display: block;
    padding: 0.5rem 0;
    color: #333;
    text-decoration: none;
    font-size: 0.9rem;
    white-space: nowrap;                    /* Prevent breaking inside dropdown */
}

.dropdown-section a:hover {
    color: var(--purple);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 10001;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--white);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* ==========================================================================
   Mobile Menu (768px and below)
   ========================================================================== */

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--purple);
        flex-direction: column;
        align-items: flex-start;
        padding: 90px 25px 40px;
        transition: right 0.4s ease;
        z-index: 9999;
        box-shadow: -8px 0 25px rgba(0,0,0,0.25);
        overflow-y: auto;
    }

    .main-nav.active {
        right: 0;
    }

    .main-nav a,
    .dropdown {
        width: 100%;
        margin: 0.8rem 0;
    }

    .dropdown-menu {
        position: static;
        width: 100%;
        background: rgba(255,255,255,0.95);
        border-radius: 8px;
        padding: 1rem;
        margin: 0.5rem 0;
        box-shadow: none;
    }

    .dropdown.active .dropdown-menu {
        display: block;
    }

    /* Hamburger → X animation */
    .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);
    }
}

/* ==========================================================================
   Your original styles below (100% untouched)
   ========================================================================== */

.card {
    background: var(--white);
    padding:20px;
    border-radius:10px;
    box-shadow:0 4px 12px rgba(0,0,0,0.1);
    margin-bottom:20px;
    box-sizing: border-box;
}
.btn {
    padding:10px 20px;
    background: var(--purple);
    color: var(--white);
    border:none;
    border-radius:5px;
    cursor:pointer;
    text-decoration:none;
    font-size: 14px;
}
.btn:hover { background: var(--blue); }
.page-title {
    font-size:24px;
    font-weight:bold;
    margin:20px 0;
    color: var(--purple);
}
input, textarea {
    width:100%;
    padding:10px;
    margin-bottom:12px;
    border-radius:5px;
    border:1px solid #ccc;
    box-sizing:border-box;
}
textarea { resize: vertical; }
.grid {
    display:grid;
    grid-template-columns: repeat(auto-fit, minmax(280px,1fr));
    gap:15px;
}
.paper-item { display: flex; gap: 15px; align-items: flex-start; }
.paper-thumbnail img { width: 80px; height: 100px; object-fit: cover; border-radius: 5px; }
.featured-paper .paper-thumbnail img { width: 120px; height: 160px; }
.paper-info { flex: 1; overflow: hidden; }
.paper-info p { margin: 4px 0; word-wrap: break-word; }
.marquee {
    background: var(--purple);
    color: var(--white);
    padding: 10px 0;
    text-align:center;
    font-weight:bold;
    font-size:16px;
    margin-bottom:15px;
}
.hero {
    padding:40px;
    background: linear-gradient(90deg, var(--blue), var(--purple));
    color: var(--white);
    text-align:center;
    border-radius:12px;
    margin-bottom:20px;
}
.hero h2 { font-size:34px; margin-bottom:8px; }
.hero p { font-size:16px; max-width:900px; margin:auto; opacity:0.95; }
.hero form { display:flex; gap:10px; max-width:720px; margin:20px auto 0; }
.hero input[type="search"] {
    flex:1;
    padding:12px;
    border-radius:8px;
    border:1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.08);
    color:white;
}
/* ========== BEAUTIFUL LOGIN & REGISTER PAGES (same design) ========== */
/* auth.css */

:root {
  --purple: #6B21A8;
  --purple-dark: #5a1b8f;
  --gradient-start: #667eea;
  --gradient-end: #764ba2;
}

.auth-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px 16px;
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
}

.auth-box {
  background: white;
  padding: 45px 40px;
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  width: 100%;
  max-width: 420px;
  text-align: center;
}

.auth-box h2 {
  font-size: 28px;
  color: var(--purple);
  margin: 0 0 8px 0;
  font-weight: bold;
}

.auth-box > p {
  color: #666;
  margin-bottom: 30px;
  font-size: 16px;
}

.field {
  margin-bottom: 20px;
  text-align: left;
}

.field label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #333;
}

.field input {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid #e0e0e0;
  border-radius: 10px;
  font-size: 16px;
  transition: border-color 0.3s, box-shadow 0.3s;
  box-sizing: border-box;
}

.field input:focus {
  outline: none;
  border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(107, 33, 168, 0.15);
}

.btn.full {
  width: 100%;
  padding: 14px;
  font-size: 17px;
  font-weight: bold;
  margin-top: 10px;
  background: var(--purple);
  color: white;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.25s;
}

.btn.full:hover {
  background: var(--purple-dark);
  transform: translateY(-1px);
}

.error-alert {
  background: #ffe6e6;
  color: #c92a2a;
  padding: 14px;
  border-radius: 10px;
  margin-bottom: 20px;
  font-weight: 500;
}

.bottom-text {
  margin-top: 28px;
  color: #555;
  font-size: 15px;
}

.bottom-text a {
  color: var(--purple);
  font-weight: bold;
  text-decoration: none;
}

.bottom-text a:hover {
  text-decoration: underline;
}
/* auth-mobile.css */

/* ───────────────────────────────────────────────
   Adjustments for small screens (≤ 480px)
─────────────────────────────────────────────── */
/* auth-mobile.css  —  add / replace these rules */

/* Force vertical stacking + better spacing on mobile */
@media (max-width: 480px) {

  .auth-container {
    padding:          1.5rem 1rem;
    min-height:       100dvh;
    gap:              2.5rem;           /* ← key: space between form and email box */
    justify-content:  flex-start;       /* start from top instead of perfect center */
    padding-top:      2rem;             /* breathing room from top */
  }

  .auth-box,
  .email-box {                          /* assuming you renamed it to .email-box */
    width:            100%;
    max-width:        none;             /* let it take full available width */
    margin:           0;                /* remove any unwanted auto margins */
    box-shadow:       0 4px 16px rgba(0,0,0,0.08);  /* softer shadow on mobile */
  }

  /* Make sure both children are treated as block/flow items */
  .auth-box,
  .email-box {
    display:          block;
    flex:             none;             /* prevent flex shrinking/growing weirdly */
  }

  /* Optional: make email box visually lighter on small screens */
  .email-box {
    background:       rgba(255,255,255,0.92);
    border:           1px solid rgba(230,230,250,0.8);
    padding:          1.6rem 1.3rem;
  }

  /* Slightly smaller text/buttons if screen is very narrow */
  @media (max-width: 360px) {
    .auth-container {
      gap: 2rem;
      padding-top: 1.5rem;
    }
    
    .email-box {
      padding: 1.4rem 1.1rem;
    }
  }
}
@media (max-width: 480px) {
  .auth-container {
    flex-direction:   column;
    align-items:      stretch;      /* children take full width */
    justify-content:  flex-start;
    gap:              2.5rem;
    padding:          2rem 1.2rem;
  }

  .auth-box,
  .email-box {
    margin:           0;
  }
}