* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Trebuchet MS", Arial, sans-serif;
    color: #ffffff;
    text-align: center;

    background:
        radial-gradient(circle at 10% 15%, rgba(252, 249, 249, 0.22), transparent 30%),
        radial-gradient(circle at 90% 85%, rgba(255, 255, 255, 0.18), transparent 32%),
        linear-gradient(135deg,
            #000000 0%,
            #0b0b0b 25%,
            #202020 50%,
            #0b0b0b 72%,
            #000000 100%);

    background-attachment: fixed;
}

h1,
h2,
h3 {
    margin-top: 0;
    color: #ffffff;
}

p {
    color: #dddddd;
}

a {
    text-decoration: none;
    color: #ffffff;
}

/* ========================================
   HOME / LOGIN PAGE
======================================== */

body>h1 {
    margin: 70px auto 10px;
    max-width: 900px;

    font-size: 42px;
    font-weight: 700;
    color: #ffffff;

    letter-spacing: -1px;

    text-shadow:
        0 3px 15px rgba(0, 0, 0, 0.9),
        0 0 25px rgba(255, 0, 0, 0.08);
}

body>p {
    margin-bottom: 25px;

    font-size: 18px;
    color: #dddddd;
}

/* ========================================
   WELCOME / STATUS BOX
======================================== */

#status {
    width: 360px;
    margin: 25px auto;
    padding: 22px 25px;

    background:
        linear-gradient(145deg, #101010, #242424);

    border: 1px solid #751515;
    border-radius: 14px;

    box-shadow:
        0 15px 40px rgba(0, 0, 0, 0.75),
        0 0 25px rgba(255, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

#status h1 {
    margin: 0 0 10px;

    font-size: 24px;
    color: #ffffff;
}

#status a {
    display: inline-block;

    margin-top: 5px;
    padding: 9px 18px;

    background: #c40000;
    color: #ffffff;

    border: 1px solid #ff3333;
    border-radius: 8px;

    font-size: 15px;
    font-weight: bold;

    transition: 0.2s ease;
}

#status a:hover {
    background: #ff1616;

    transform: translateY(-2px);

    box-shadow:
        0 6px 20px rgba(255, 0, 0, 0.35);
}

/* ========================================
   LOGIN BOX
======================================== */

#login-section {
    width: 360px;

    margin: 25px auto;
    padding: 30px;

    background:
        linear-gradient(145deg, #0d0d0d, #252525);

    border: 1px solid #801515;
    border-radius: 14px;

    box-shadow:
        0 15px 40px rgba(0, 0, 0, 0.75),
        0 0 30px rgba(255, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

#login-section h2 {
    margin-bottom: 22px;

    color: #ffffff;
    font-size: 25px;

    text-shadow:
        0 0 15px rgba(255, 0, 0, 0.15);
}

#login-form {
    display: flex;
    flex-direction: column;

    text-align: left;
}

#login-form label {
    margin-bottom: 8px;

    color: #eeeeee;

    font-size: 14px;
    font-weight: bold;
}

#login-form input {
    width: 100%;

    padding: 12px 13px;

    background: #050505;
    color: #ffffff;

    border: 1px solid #5c5c5c;
    border-radius: 8px;

    font-size: 16px;

    outline: none;

    transition: 0.2s ease;
}

#login-form input:focus {
    border-color: #ff2222;

    box-shadow:
        0 0 0 3px rgba(255, 0, 0, 0.15),
        0 0 20px rgba(255, 0, 0, 0.12);
}

#login-form button {
    width: 100%;

    margin-top: 18px;
}

/* ========================================
   LOGIN MESSAGE
======================================== */

#login-message {
    margin-top: 15px;

    font-size: 14px;
    font-weight: bold;

    color: #ff3333;

    text-shadow:
        0 0 10px rgba(255, 0, 0, 0.25);
}

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

button {
    padding: 11px 22px;

    background: #c90000;
    color: #ffffff;

    border: 1px solid #ff3030;
    border-radius: 8px;

    font-family: inherit;
    font-size: 15px;
    font-weight: bold;

    cursor: pointer;

    transition: 0.2s ease;

    box-shadow:
        0 5px 15px rgba(0, 0, 0, 0.4);
}

button:hover {
    background: #ff1a1a;

    transform: translateY(-2px);

    box-shadow:
        0 7px 20px rgba(255, 0, 0, 0.3);
}

#logout-button {
    margin-top: 5px;

    background: #151515;

    border: 1px solid #5c5c5c;
}

#logout-button:hover {
    background: #2a2a2a;

    border-color: #ff2222;

    box-shadow:
        0 0 15px rgba(255, 0, 0, 0.12);
}

/* ========================================
   MAIN LINKS
======================================== */

.mainlinks {
    display: flex;

    justify-content: center;
    align-items: center;

    gap: 15px;

    margin: 25px 0;

    flex-wrap: wrap;
}

.mainlinks a {
    display: inline-block;

    padding: 12px 24px;

    background:
        linear-gradient(145deg, #0b0b0b, #1e1e1e);

    color: #ffffff;

    border: 1px solid #751515;
    border-radius: 8px;

    font-family: Arial, sans-serif;
    font-weight: bold;

    transition: 0.2s ease;

    box-shadow:
        0 5px 15px rgba(0, 0, 0, 0.55);
}

.mainlinks a:hover {
    background: #c40000;

    border-color: #ff3333;

    transform: translateY(-3px);

    box-shadow:
        0 8px 22px rgba(255, 0, 0, 0.3);
}

/* ========================================
   PROJECTS PAGE HEADER
======================================== */

header {
    width: 100%;

    padding: 18px 0;

    background:
        linear-gradient(90deg, #050505, #151515, #050505);

    border-bottom: 1px solid #751515;

    box-shadow:
        0 5px 25px rgba(0, 0, 0, 0.75);
}

header nav {
    width: 90%;
    max-width: 1100px;

    margin: auto;

    display: flex;

    justify-content: space-between;
    align-items: center;
}

header nav h1 {
    margin: 0;

    color: #ffffff;

    font-size: 27px;

    text-shadow:
        0 0 15px rgba(255, 0, 0, 0.12);
}

header nav ul {
    display: flex;

    gap: 25px;

    margin: 0;
    padding: 0;

    list-style: none;
}

header nav a {
    color: #dddddd;

    font-weight: bold;

    transition: 0.2s ease;
}

header nav a:hover {
    color: #ff2222;

    text-shadow:
        0 0 10px rgba(255, 0, 0, 0.35);
}

/* ========================================
   PROJECT CONTENT
======================================== */

main {
    width: 90%;
    max-width: 1100px;

    margin: auto;
}

.projects-section {
    padding-top: 60px;
}

.projects-section h2 {
    margin-bottom: 10px;

    color: #ffffff;

    font-size: 38px;

    text-shadow:
        0 3px 15px rgba(0, 0, 0, 0.8),
        0 0 20px rgba(255, 0, 0, 0.1);
}

.intro {
    margin-bottom: 40px;

    color: #dddddd;
}

/* ========================================
   PROJECT CARDS
======================================== */

.projects-container {
    display: flex;

    justify-content: center;
    align-items: stretch;

    gap: 25px;

    flex-wrap: wrap;
}

.project-card {
    width: 280px;
    min-height: 200px;

    padding: 28px;

    background:
        linear-gradient(145deg, #101010, #262626);

    border: 1px solid #5c2020;
    border-radius: 14px;

    box-shadow:
        0 12px 30px rgba(0, 0, 0, 0.7),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);

    transition: 0.25s ease;
}

.project-card:hover {
    transform: translateY(-7px);

    border-color: #ff2222;

    box-shadow:
        0 18px 40px rgba(0, 0, 0, 0.75),
        0 0 30px rgba(255, 0, 0, 0.2);
}

.project-card h3 {
    margin-bottom: 15px;

    color: #ffffff;

    font-size: 22px;

    text-shadow:
        0 0 10px rgba(255, 0, 0, 0.1);
}

.project-card p {
    font-size: 16px;

    line-height: 1.6;

    color: #d0d0d0;
}

/* ========================================
   PROJECT BUTTON
======================================== */

.project-button {
    display: inline-block;

    padding: 10px 20px;

    background: #c40000;
    color: #ffffff;

    border: 1px solid #ff3333;
    border-radius: 8px;

    font-size: 15px;
    font-weight: bold;

    transition: 0.2s ease;
}

.project-button:hover {
    background: #ff2222;

    transform: translateY(-2px);

    box-shadow:
        0 7px 20px rgba(255, 0, 0, 0.3);
}

/* ========================================
   DASHBOARD PAGE
======================================== */

body>nav:not(#status) {
    margin: 25px auto;
}

body>nav:not(#status) a {
    display: inline-block;

    padding: 10px 20px;

    background:
        linear-gradient(145deg, #111111, #222222);

    color: #ffffff;

    border: 1px solid #6b1a1a;
    border-radius: 8px;

    font-weight: bold;

    transition: 0.2s ease;
}

body>nav:not(#status) a:hover {
    background: #c40000;

    border-color: #ff3333;

    color: #ffffff;

    transform: translateY(-2px);

    box-shadow:
        0 7px 20px rgba(255, 0, 0, 0.25);
}

/* ========================================
   GUESTBOOK
======================================== */

#guestbook-list {
    width: 90%;
    max-width: 700px;

    margin: 30px auto 25px;
    padding: 0;

    list-style: none;

    text-align: left;
}

#guestbook-list li {
    margin-bottom: 15px;

    padding: 18px 20px;

    background:
        linear-gradient(145deg, #101010, #252525);

    border: 1px solid #5c2020;
    border-radius: 12px;

    color: #ffffff;

    font-size: 16px;
    line-height: 1.5;

    box-shadow:
        0 8px 25px rgba(0, 0, 0, 0.6);

    transition: 0.2s ease;
}

#guestbook-list li:hover {
    transform: translateY(-3px);

    border-color: #ff2222;

    box-shadow:
        0 12px 30px rgba(0, 0, 0, 0.7),
        0 0 20px rgba(255, 0, 0, 0.15);
}

/* ========================================
   GUESTBOOK FORM
======================================== */

#guestbook-form {
    width: 90%;
    max-width: 700px;

    margin: 0 auto 25px;

    display: flex;

    gap: 10px;
}

#guestbook-form input,
#guestbook-form textarea {
    flex: 1;

    padding: 13px 15px;

    background: #050505;
    color: #ffffff;

    border: 1px solid #5c5c5c;
    border-radius: 8px;

    font-family: inherit;
    font-size: 16px;

    outline: none;

    transition: 0.2s ease;
}

#guestbook-form textarea {
    min-height: 100px;

    resize: vertical;
}

#guestbook-form input::placeholder,
#guestbook-form textarea::placeholder {
    color: #888888;
}

#guestbook-form input:focus,
#guestbook-form textarea:focus {
    border-color: #ff2222;

    box-shadow:
        0 0 0 3px rgba(255, 0, 0, 0.12),
        0 0 18px rgba(255, 0, 0, 0.1);
}

#guestbook-form button {
    padding: 12px 24px;

    background: #c40000;
}

#guestbook-form button:hover {
    background: #ff2222;
}

/* ========================================
   GUESTBOOK HOME BUTTON
======================================== */

body>a[href="./index.html"] {
    display: inline-block;

    margin-top: 5px;
    padding: 10px 20px;

    background:
        linear-gradient(145deg, #111111, #222222);

    color: #ffffff;

    border: 1px solid #6b1a1a;
    border-radius: 8px;

    font-weight: bold;

    transition: 0.2s ease;
}

body>a[href="./index.html"]:hover {
    border-color: #ff2222;

    background: #c40000;

    color: #ffffff;

    transform: translateY(-2px);

    box-shadow:
        0 7px 20px rgba(255, 0, 0, 0.25);
}

/* ========================================
   FOOTER
======================================== */

footer {
    margin-top: 70px;

    padding: 20px;

    border-top: 1px solid rgba(120, 0, 0, 0.35);
}

footer p {
    font-size: 14px;

    color: #aaaaaa;
}

/* ========================================
   MOBILE
======================================== */

@media (max-width: 600px) {

    body>h1 {
        margin-top: 45px;

        padding: 0 15px;

        font-size: 36px;
    }

    #login-section,
    #status {
        width: 90%;
    }

    #guestbook-form {
        flex-direction: column;
    }

    #guestbook-form input,
    #guestbook-form textarea {
        width: 100%;
    }

    #guestbook-form button {
        width: 100%;
    }

    #guestbook-list {
        width: 90%;
    }

    header nav {
        flex-direction: column;

        gap: 15px;
    }

    header nav ul {
        gap: 15px;
    }

    .projects-section {
        padding-top: 40px;
    }

    .projects-section h2 {
        font-size: 32px;
    }

    .project-card {
        width: 100%;

        max-width: 400px;
    }

    .mainlinks {
        flex-direction: column;

        align-items: center;
    }

    .mainlinks a {
        width: 220px;
    }
}


/* 404 PAGE */

.error-page {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.error-page h1 {
    font-size: 120px;
    margin: 0;
}

.error-page h2 {
    font-size: 32px;
    margin: 10px 0;
}

.error-page p {
    font-size: 18px;
    margin-bottom: 25px;
}

.home-button {
    display: inline-block;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 8px;
}

.home-button:hover {
    opacity: 0.8;
}

.space-image {

    width: 40rem;
}

/* ==============================
   SPACE PICTURE OF THE DAY
   Black & Red Futuristic Theme
================================= */

* {
    box-sizing: border-box;
}

:root {
    --red: #ff3030;
    --red-hover: #ff4848;
    --black: #0a0a0a;
    --card: #121212;
    --card-light: #191919;
    --border: #292929;
    --text: #f5f5f5;
    --muted: #999999;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0 24px 60px;
    color: var(--text);
    font-family: "Segoe UI", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.7;
}

/* ==============================
   NAVIGATION
================================= */

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 22px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

nav a {
    position: relative;
    padding: 9px 18px;
    color: #bdbdbd;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px;
    transition: color 0.25s ease, background 0.25s ease;
}

nav a:hover {
    color: white;
    background: rgba(255, 48, 48, 0.12);
}

nav a::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 3px;
    height: 2px;
    background: var(--red);
    transform: scaleX(0);
    transition: transform 0.25s ease;
}

nav a:hover::after {
    transform: scaleX(1);
}

/* ==============================
   MAIN HEADING
================================= */

h1 {
    max-width: 850px;
    margin: 55px auto 12px;
    text-align: center;
    color: var(--text);
    font-size: clamp(32px, 5vw, 50px);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -1.5px;
}

h1::after {
    content: "";
    display: block;
    width: 65px;
    height: 4px;
    margin: 22px auto 18px;
    background: var(--red);
    border-radius: 10px;
    box-shadow: 0 0 18px rgba(255, 48, 48, 0.4);
}

/* ==============================
   DATE PICKER FORM
================================= */

#space-form {
    width: 100%;
    max-width: 650px;
    margin: 35px auto 25px;
    padding: 28px;
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: 15px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.25);
}

#space-form label {
    display: block;
    width: 100%;
    margin-bottom: -7px;
    color: #e6e6e6;
    font-size: 14px;
    font-weight: 700;
}

#date {
    flex: 1;
    min-width: 180px;
    min-height: 46px;
    padding: 11px 14px;
    color: white;
    color-scheme: dark;
    background: #0a0a0a;
    border: 1px solid #353535;
    border-radius: 9px;
    font: inherit;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#date:hover {
    border-color: #666;
}

#date:focus {
    border-color: var(--red);
    box-shadow: 0 0 0 3px rgba(255, 48, 48, 0.12);
}

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

button {
    min-height: 46px;
    padding: 11px 23px;
    color: white;
    background: var(--red);
    border: 1px solid var(--red);
    border-radius: 9px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s ease,
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

button:hover {
    background: var(--red-hover);
    box-shadow: 0 5px 20px rgba(255, 48, 48, 0.25);
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--red);
    outline-offset: 4px;
}

/* ==============================
   STATUS MESSAGE
================================= */

#status {
    width: 100%;
    max-width: 850px;
    margin: 20px auto;
    padding: 0 10px;
    color: var(--muted);
    text-align: center;
    font-size: 14px;
}

#status:empty {
    display: none;
}

/* ==============================
   SPACE PICTURE RESULT
================================= */

#result {
    width: 100%;
    max-width: 1000px;
    margin: 40px auto 0;
    padding: 32px;
    overflow: hidden;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: fadeIn 0.45s ease both;
}

/* Respect the HTML hidden attribute */
#result[hidden] {
    display: none;
}

/* Picture title */

#title {
    margin: 0 0 10px;
    color: white;
    font-size: clamp(24px, 3.5vw, 36px);
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -0.6px;
}

/* Picture date */

#date-shown {
    display: inline-block;
    margin: 0 0 25px;
    padding: 5px 12px;
    color: #ff7777;
    background: rgba(255, 48, 48, 0.1);
    border: 1px solid rgba(255, 48, 48, 0.25);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.6px;
}

/* Space image */

.space-image {
    display: block;
    width: 100%;
    max-height: 650px;
    margin: 0 auto 28px;
    object-fit: contain;
    background: #080808;
    border: 1px solid #303030;
    border-radius: 12px;
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
}

/* Image description */

#description {
    margin: 0 0 25px;
    color: #c5c5c5;
    font-size: 15px;
    line-height: 1.9;
    white-space: pre-line;
}

/* NASA link */

#nasa-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 19px;
    color: white;
    background: transparent;
    border: 1px solid var(--red);
    border-radius: 9px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    transition: background 0.25s ease,
        box-shadow 0.25s ease,
        transform 0.25s ease;
}

#nasa-link::after {
    content: "↗";
    font-size: 17px;
}

#nasa-link:hover {
    background: rgba(255, 48, 48, 0.13);
    box-shadow: 0 0 20px rgba(255, 48, 48, 0.12);
    transform: translateY(-2px);
}

/* ==============================
   ANIMATIONS
================================= */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==============================
   MOBILE RESPONSIVENESS
================================= */

@media (max-width: 600px) {
    body {
        padding: 0 15px 35px;
    }

    nav {
        gap: 4px;
        padding: 16px 0;
    }

    nav a {
        padding: 8px 11px;
        font-size: 13px;
    }

    h1 {
        margin-top: 38px;
        letter-spacing: -0.8px;
    }

    #space-form {
        padding: 20px;
        gap: 12px;
    }

    #date,
    #space-form button {
        width: 100%;
        flex: 1 1 100%;
    }

    #result {
        margin-top: 25px;
        padding: 20px;
        border-radius: 13px;
    }

    .space-image {
        max-height: 450px;
        border-radius: 9px;
    }

    #description {
        font-size: 14px;
        line-height: 1.8;
    }

    #nasa-link {
        width: 100%;
        text-align: center;
    }
}

/* Accessibility: reduced motion */

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}