:root {
    --bg-color: #ffffff;
    --surface-color: #e3e4e5;
    --primary-blue: #3b82f6;
    --navy-gradient: linear-gradient(135deg, #3675ff 30%, #0e305a 100%);
    --text-main: #111827;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --header-bg: rgba(255, 255, 255, 0.85);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --logo-filter: none;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --surface-color: #1c1c1c;
    --primary-blue: #3b82f6;
    --navy-gradient: linear-gradient(135deg, #ffffff 30%, #516eff 100%);
    --text-main: #ededed;
    --text-muted: #a1a1aa;
    --border-color: #2e2e2e;
    --header-bg: rgba(18, 18, 18, 0.8);
    --shadow-color: rgba(0, 0, 0, 0.5);
    --logo-filter: brightness(0) invert(1);
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    -webkit-font-smoothing: antialiased;
    transition: all 0.2s ease;
}

.site-footer {
    margin-top: 80px;
    border-top: 1px solid var(--border-color);
    background-color: var(--surface-color);
    color: var(--text-muted);
}

.site-footer__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 20px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 18px 28px;
    font-size: 14px;
}

.site-footer__group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-footer a {
    color: var(--primary-blue);
    text-decoration: none;
}

.site-footer a:hover {
    text-decoration: underline;
}

.site-footer__select {
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-main);
    border-radius: 6px;
    padding: 6px 10px;
}

.site-footer__copyright {
    width: 100%;
    text-align: center;
    font-size: 13px;
}

header {
    height: 70px;
    background-color: var(--header-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 15%; 
    position: sticky;
    top: 0;
    z-index: 100;
    box-sizing: border-box;
    transition: all 0.2s ease;
}

.header-right {
    display: flex;
    align-items: center;
    justify-self: end;
    gap: 10px;
}

.theme-toggle-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
    background-color: var(--surface-color);
}

.theme-toggle-btn img {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

[data-theme="dark"] .theme-toggle-btn img {
    filter: brightness(0) invert(1);
}

.logo {
    display: flex;
    align-items: center;
    justify-self: start;
}

.logo img {
    height: 50px;
    filter: var(--logo-filter);
    transition: filter 0.2 ease;
}

.menu {
    display: flex;
    align-items: center;
    justify-self: center;
}

.menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 40px;
}

.menu ul li {
    font-size: 15px;
    font-weight: 500;
}

.menu ul li a {
    position: relative;
    text-decoration: none;
    color: var(--text-muted);
    padding: 6px 0;
    margin: 0 4px;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
}

.menu ul li a:hover {
    color: var(--text-main);
}

.menu ul li a:not(.active):hover::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background-color: #3b82f6;
    border-radius: 50%;
    animation: dot-pop 0.2s ease-out;
}

.menu ul li a.active {
    background-color: transparent;
    color: var(--primary-blue);
    border-bottom: 2px solid var(--primary-blue);
}

.menu ul li a.active::after {
    content: none;
}

@keyframes dot-pop {
    0% { transform: translateX(-50%) scale(0); opacity: 0; }
    100% { transform: translateX(-50%) scale(1); opacity: 1; }
}

.profile {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 99px;
    justify-self: end;
}

.profile:hover {
    background-color: var(--surface-color);
}

.profile img {
    height: 36px;
    width: 36px;
    object-fit: cover;
}

.profile-name {
    color: var(--text-main);
    font-size: 14px;
    font-weight: 500;
    user-select: none;
}

.dropdown-menu {
    position: absolute;
    top: 75px;
    right: 10%;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 40px var(--shadow-color);
    border-radius: 8px;
    width: 160px;
    z-index: 9999;
    overflow: hidden;
    transition: all 0.2s ease;
}

.dropdown-menu a, .dropdown-menu button.dropdown-link {
    display: block;
    padding: 12px 20px;
    text-decoration: none;
    color: var(--text-main);
    font-size: 14px;
    width: 100%;
    text-align: left;
    border: none;
    background: none;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    box-sizing: border-box;
}

.dropdown-menu a:hover, .dropdown-menu button.dropdown-link:hover {
    background-color: var(--surface-color);
    color: var(--primary-blue);
}

.auth-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: opacity 180ms ease, visibility 180ms ease;
}

.auth-modal.hidden {
    display: flex;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}
  
.auth-box {
    background: var(--bg-color);
    padding: 30px 40px;
    border-radius: 12px;
    text-align: center;
    width: 350px;
    box-shadow: 0 20px 50px var(--shadow-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    opacity: 1;
    transform: translateY(0) scale(1);
    transition: opacity 180ms ease, transform 180ms ease;
}

.auth-modal.hidden .auth-box {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
}
  
.auth-box input, .username-with-title select {
    width: 100%;
    margin: 10px 0;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--surface-color);
    color: var(--text-main);
    box-sizing: border-box;
}

.auth-box input:focus, .username-with-title select:focus {
    outline: none;
    border-color: var(--primary-blue);
    background-color: var(--bg-color);
}

.username-with-title {
    display: flex;
    gap: 8px;
    align-items: center;
}

.username-with-title input.auth-input {
    flex: 1;
}

.username-with-title select {
    height: 42px;
    width: 25%;
}
  
.auth-box-button {
    width: 100%;
    padding: 12px;
    margin-top: 20px;
    background: var(--navy-gradient);
    color: var(--bg-color);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    font-size: 15px;
    box-shadow: 0 4px 15px var(--shadow-color);
    transition: transform 0.2s;
}
  
.auth-box-button:hover {
    transition: transform 0.2s ease;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-color);
}

.auth-box-header {
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.auth-close {
    border: 0; 
    background: transparent;
    cursor: pointer; 
    font-size: 24px; 
    color: var(--text-muted);
}

.auth-close:hover {
    color: var(--text-main);
}
  
.error-msg {
    color: #ff6b6b;
    font-size: 13px;
    margin-top: 4px;
}
  
.hidden { display: none; }

.switch-text {
    margin-top: 15px;
    font-size: 14px;
    color: var(--text-muted);
}

.warning-stack, #warning-toast-stack {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 9999;
    pointer-events: none;
}

.warning-toast, #warning-toast-stack .toast {
    pointer-events: auto;
    min-width: 260px;
    max-width: 420px;
    padding: 12px 16px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    line-height: 1.4;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px var(--shadow-color);
    color: var(--text-main);
    animation: warning-toast-in 0.25s ease-out;
}

.warning-toast__icon {
    flex: 0 0 auto;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--primary-blue);
    background: rgba(37, 99, 235, 0.1);
}

.warning-toast__text { flex: 1 1 auto; }
.warning-toast:active { transform: translateY(1px); }
.warning-toast.leaving { animation: warning-toast-out 0.25s ease-in forwards; }

.warning-confirm {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(0, 0, 0, 0.62);
    backdrop-filter: blur(6px);
    opacity: 0;
    transition: opacity 160ms ease;
}

.warning-confirm.active {
    opacity: 1;
}

.warning-confirm.leaving {
    animation: warning-confirm-out 160ms ease forwards;
}

.warning-confirm__box {
    width: min(420px, 100%);
    display: flex;
    gap: 16px;
    background: var(--bg-color);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 20px 60px var(--shadow-color);
    padding: 22px;
    transform: translateY(10px) scale(0.98);
    transition: transform 160ms ease;
}

.warning-confirm.active .warning-confirm__box {
    transform: translateY(0) scale(1);
}

.warning-confirm__icon {
    flex: 0 0 auto;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    background: rgba(37, 99, 235, 0.1);
}

.warning-confirm__content {
    flex: 1 1 auto;
    min-width: 0;
}

.warning-confirm__title {
    margin: 0 0 8px;
    font-size: 18px;
    line-height: 1.3;
}

.warning-confirm__message {
    margin: 0;
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 14px;
}

.warning-confirm__actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 22px;
}

.warning-confirm__button {
    min-width: 82px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 9px 16px;
    cursor: pointer;
    background: transparent;
    color: var(--text-main);
    font-weight: 600;
    transition: all 0.18s ease;
}

.warning-confirm__button:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    background: rgba(59, 130, 246, 0.08);
}

.warning-confirm__button--confirm {
    color: white;
    background: var(--primary-blue);
    border-color: var(--primary-blue);
}

.warning-confirm__button--confirm[data-confirm-type="r"] {
    background: #dc2626;
    border-color: #dc2626;
}

.warning-confirm__button--confirm[data-confirm-type="g"] {
    background: #16a34a;
    border-color: #16a34a;
}

.warning-confirm__button--confirm:hover {
    color: white;
    filter: brightness(1.05);
}

@keyframes warning-toast-in {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes warning-toast-out {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-16px); }
}

@keyframes warning-confirm-out {
    from { opacity: 1; }
    to { opacity: 0; }
}