:root {
    --bg-page: #0b1226;
    --bg-panel: #131d35;
    --bg-card: #1a2548;
    --bg-card-strong: #23355e;
    --bg-navbar: linear-gradient(135deg, #120f2d 0%, #1d2a6a 100%);
    --bg-footer: #120f2d;
    --accent: #6f8cff;
    --accent-strong: #4a65d9;
    --accent-soft: #dfe7ff;
    --success: #5ad4a1;
    --success-soft: #103d2f;
    --danger: #ff6d85;
    --danger-soft: #3b1b2a;
    --text: #edf4ff;
    --muted: #c2d0f7;
    --border: rgba(170, 190, 255, 0.18);
    --shadow: rgba(3, 6, 18, 0.55);
    --navbar-text: #edf3ff;
}

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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    color: var(--text);
    background: linear-gradient(180deg, #0b1226 0%, #101b34 100%);
}

h1,
h2,
h3,
h4 {
    color: var(--text);
}

.navbar {
    background: var(--bg-navbar);
    color: var(--navbar-text);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    box-shadow: 0 8px 24px var(--shadow);
}

.navbar h1 {
    color: var(--navbar-text);
    font-size: clamp(1.5rem, 2vw, 2.2rem);
}

.navbar nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 0.9rem;
}

.navbar nav a {
    color: var(--navbar-text);
    text-decoration: none;
    margin-left: 0;
    font-weight: 700;
    opacity: 0.95;
}

.navbar nav a:hover {
    text-decoration: underline;
    opacity: 1;
}

.nav-link {
    color: var(--navbar-text);
    text-decoration: none;
    gap: 0.5rem 0.9rem;
}

main {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 20px auto;
    padding: 0 20px;
}

.page {
    animation: fadeIn 0.3s ease-in-out;
}

.page section,
.page form,
.card {
    background: linear-gradient(180deg, rgba(19, 29, 53, 0.96) 0%, rgba(26, 37, 72, 0.96) 100%);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 8px 24px var(--shadow);
}

.card {
    background: linear-gradient(180deg, rgba(19, 29, 53, 0.96) 0%, rgba(26, 37, 72, 0.96) 100%);
    padding: 15px;
    border-radius: 12px;
    margin-top: 10px;
}

button {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
    color: white;
    border: none;
    padding: 10px 16px;
    cursor: pointer;
    border-radius: 10px;
    margin-top: 10px;
    font-weight: 700;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    box-shadow: 0 6px 18px rgba(111, 140, 255, 0.25);
}

button:hover {
    background: linear-gradient(135deg, var(--accent-strong) 0%, #233d9b 100%);
    transform: translateY(-1px);
}

button.btn-logout,
button.deleteUserBtn,
button.deleteTagBtn,
button.deleteArticleBtn,
button.deletePostBtn,
button.removeImageBtn {
    background: linear-gradient(135deg, var(--danger) 0%, #d33d62 100%);
    box-shadow: 0 6px 18px rgba(232, 93, 117, 0.24);
}

input,
textarea,
select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background-color: rgba(10, 16, 30, 0.8);
    color: var(--text);
    font: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(78, 106, 243, 0.15);
}

footer {
    background: var(--bg-footer);
    color: var(--navbar-text);
    text-align: center;
    padding: 15px;
    margin-top: auto;
}

.apiStatus {
    margin-top: 10px;
    font-weight: bold;
    color: #dfe7ff;
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem 1rem 0.75rem;
        gap: 0.75rem;
    }

    .navbar h1 {
        font-size: 1.6rem;
    }

    .navbar nav {
        width: 100%;
        gap: 0.5rem 0.75rem;
    }

    .navbar nav a {
        font-size: 0.95rem;
    }

    #navAuthContainer {
        display: flex !important;
        float: none !important;
        width: 100%;
        justify-content: flex-start;
    }

    main {
        margin: 15px auto;
        padding: 0 15px;
    }

    .card {
        padding: 12px;
    }

    button {
        width: 100%;
        margin-top: 8px;
    }

    footer {
        padding: 15px 12px;
    }

    .contact {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}