/* css/main.css */
html, body {
    min-height: 100vh;
    width: 100vw;
    box-sizing: border-box;
}

body {
    background:
        linear-gradient(120deg, #f7ffea 0%, #d3ffe8 100%),
        radial-gradient(circle at 80% 20%, #e0c3fc 0%, transparent 70%);
    background-blend-mode: multiply;
    color: var(--color-text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    transition: background 0.3s, color var(--transition-speed) ease;
    overflow-x: hidden;
}

html[data-theme="dark"] body {
    background:
        linear-gradient(120deg, #23272a 0%, #2a4a3a 100%),
        radial-gradient(circle at 80% 20%, #3a2a4a 0%, transparent 70%);
    background-blend-mode: multiply;
}

@media (min-width: 900px) and (pointer: fine) {
    body {
        background-attachment: fixed;
    }
}

#app-root {
    padding: var(--space-lg);
    max-width: 980px;
    margin-inline: auto;
    min-height: 100vh;
}

/* Header and Navigation */
.main-header {
    background-color: color-mix(in srgb, var(--color-surface) 85%, transparent);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-inline: var(--space-lg);
    height: 60px;
    max-width: 1440px;
    margin-inline: auto;
}

.nav-brand {
    font-size: var(--text-lg);
    font-weight: 700;
}

.nav-toggle {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    z-index: 101; /* Above the menu */
    background-color: transparent;
}

.hamburger-icon {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    position: relative;
}
.hamburger-icon::before,
.hamburger-icon::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    transition: transform 0.2s ease-in-out, top 0.2s 0.2s ease-in-out;
}
.hamburger-icon::before {
    top: -8px;
}
.hamburger-icon::after {
    top: 8px;
}
.nav-toggle[aria-expanded="true"] .hamburger-icon {
    background-color: transparent;
}
.nav-toggle[aria-expanded="true"] .hamburger-icon::before {
    top: 0;
    transform: rotate(45deg);
    transition: top 0.2s ease-in-out, transform 0.2s 0.2s ease-in-out;
}
.nav-toggle[aria-expanded="true"] .hamburger-icon::after {
    top: 0;
    transform: rotate(-45deg);
    transition: top 0.2s ease-in-out, transform 0.2s 0.2s ease-in-out;
}

.nav-menu-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-grow: 1;
}

#logout-link, .nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-link {
    font-size: var(--text-base);
    font-weight: 500;
    padding: var(--space-xs) var(--space-sm);
    transition: color var(--transition-speed) ease;
}
.nav-link:hover, .nav-link.active {
    color: var(--color-primary);
}

@media (max-width: 48rem) { /* 768px */
    .main-nav {
        justify-content: space-between;
    }
    .nav-toggle {
        display: block;
        order: 3;
    }
    #theme-toggle {
        order: 1;
    }
    #logout-link {
        display: none; /* Hide the desktop logout link */
    }
    .nav-menu-container {
        position: fixed;
        top: 61px; /* Height of header */
        left: 0;
        width: 100%;
        max-width: 240px;
        height: calc(100vh - 61px);
        background-color: var(--color-surface);
        flex-direction: column;
        justify-content: space-between; /* Pushes logout to bottom */
        align-items: stretch;
        padding: var(--space-lg);
        padding-bottom: calc(3rem + env(safe-area-inset-bottom, 0));
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
        border-right: 1px solid var(--color-border);
        order: 2; /* In between theme toggle and burger */
    }
    .nav-menu-container.active {
        transform: translateX(0);
    }
    .nav-links {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        gap: 0;
    }
    .nav-link {
        padding: var(--space-md) 0;
        font-size: var(--text-lg);
        border-bottom: 1px solid var(--color-border);
    }
    .nav-socials-mobile {
        display: flex;
        flex-direction: row;
        justify-content: center;
        align-items: center;
        gap: 1.5rem;
        padding: 1rem 0 0.5rem 0;
        width: 100%;
        background: var(--color-surface);
        border-top: 1px solid var(--color-border);
    }
}

/* Logout button visibility */
#logout-link {
    display: block;
}

/* Theme Toggle Button */
#theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    padding: 0;
}
#theme-toggle .sun, #theme-toggle .moon {
    transition: transform var(--transition-speed) ease;
}
html[data-theme="light"] .moon { display: none; }
html[data-theme="dark"] .sun { display: none; }


/* Page styles and animations */
.page {
    animation: fadeIn 0.4s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Generic container styles */
.container {
    background-color: var(--color-surface-2);
    padding: var(--space-lg);
    border: 1px solid var(--color-border);
}

h1, .h1 {
    font-size: var(--text-xxl);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

h2, .h2 {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-xs);
}

/* Helper classes */
.text-center {
    text-align: center;
}
.mt-lg {
    margin-top: var(--space-lg);
}
.d-flex {
    display: flex;
}
.justify-center {
    justify-content: center;
}
.items-center {
    align-items: center;
}
.gap-md {
    gap: var(--space-md);
} 

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
}

.modal-header .modal-close {
    margin-left: auto;
}

.modal-title {
    margin: 0;
    font-size: var(--text-lg);
    font-weight: 600;
}

.nav-divider {
    margin: 0 var(--space-sm);
    color: var(--color-border);
    font-weight: bold;
    user-select: none;
}

@media (max-width: 900px), (pointer: coarse) {
  body {
    background-attachment: scroll !important;
  }
}

/* Social Icons in Nav */
.nav-socials {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.5rem;
}
.nav-socials a {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--color-primary);
  background: none;
  transition: background 0.2s, color 0.2s;
}
.nav-socials a:focus-visible,
.nav-socials a:hover {
  background: var(--color-primary);
  color: var(--color-surface);
  outline: 2px solid var(--color-primary);
}

.nav-socials-mobile {
  display: none;
}

@media (max-width: 48rem) {
  .nav-socials {
    display: none;
  }
  .nav-socials-mobile {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem 0 0.5rem 0;
    width: 100%;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
  }
  .nav-socials-mobile a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--color-primary);
    background: none;
    transition: background 0.2s, color 0.2s;
  }
  .nav-socials-mobile a:focus-visible,
  .nav-socials-mobile a:hover {
    background: var(--color-primary);
    color: var(--color-surface);
    outline: 2px solid var(--color-primary);
  }
}

body.nav-open {
  overflow: hidden;
  touch-action: none;
}
body.nav-open #app-root {
  pointer-events: none;
  user-select: none;
  opacity: 0.5;
  filter: blur(2px);
}
body.nav-open .main-nav,
body.nav-open .nav-menu-container {
  pointer-events: auto;
  opacity: 1;
  filter: none;
}

.nav-backdrop {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: 1;
  background: rgba(0,0,0,0.1);
  cursor: pointer;
  display: none;
}
body.nav-open .nav-backdrop {
  display: block;
}