html {
    line-height: 1.15;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
}

main {
    display: block;
}

h1 {
    font-size: 2em;
    margin: 0.67em 0;
}

hr {
    box-sizing: content-box;
    height: 0;
    overflow: visible;
}

pre {
    font-family: monospace, monospace;
    font-size: 1em;
}

a {
    background-color: transparent;
}

abbr[title] {
    border-bottom: none;
    text-decoration: underline;
    text-decoration: underline dotted;
}

b,
strong {
    font-weight: bolder;
}

code,
kbd,
samp {
    font-family: monospace, monospace;
    font-size: 1em;
}

small {
    font-size: 80%;
}

sub,
sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
}

sub {
    bottom: -0.25em;
}

sup {
    top: -0.5em;
}

img {
    border-style: none;
}

button,
input,
optgroup,
select,
textarea {
    font-family: inherit;
    font-size: 100%;
    line-height: 1.15;
    margin: 0;
}

button,
input {
    overflow: visible;
}

button,
select {
    text-transform: none;
}

button,
[type="button"],
[type="reset"],
[type="submit"] {
    -webkit-appearance: button;
    appearance: button;
}

button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
    border-style: none;
    padding: 0;
}

button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
    outline: 1px dotted ButtonText;
}

fieldset {
    padding: 0.35em 0.75em 0.625em;
}

legend {
    box-sizing: border-box;
    color: inherit;
    display: table;
    max-width: 100%;
    padding: 0;
    white-space: normal;
}

progress {
    vertical-align: baseline;
}

textarea {
    overflow: auto;
}

[type="checkbox"],
[type="radio"] {
    box-sizing: border-box;
    padding: 0;
}

[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
    height: auto;
}

[type="search"] {
    -webkit-appearance: textfield;
    appearance: textfield;
    outline-offset: -2px;
}

[type="search"]::-webkit-search-decoration {
    -webkit-appearance: none;
    appearance: none;
}

::-webkit-file-upload-button {
    -webkit-appearance: button;
    font: inherit;
}

details {
    display: block;
}

summary {
    display: list-item;
}

template {
    display: none;
}

[hidden] {
    display: none;
}

:root {
    --primary-color: #5d1f08;
    --secondary-color: #57534e;
    --accent-color: #92400e;
    --success-color: #065f46;
    --success-hover: #064e3b;
    --text-color: #1c1917;
    --text-light: #57534e;
    --background: #fafaf9;
    --white: #ffffff;
    --light-gray: #f5f5f4;
    --border-color: #d6d3d1;
    --hover-color: #b91c1c;
    --hover-bg: #fef2f2;
    --border-radius: 8px;
    --box-shadow: 0 2px 8px rgba(124, 45, 18, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background);
}

header {
    background-color: var(--white);
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 2px solid var(--border-color);
    box-shadow: var(--box-shadow);
}

header img {
    width: 50px;
    height: 50px;
}

header span {
    font-size: 1.2rem;
    font-weight: 600;
    flex-grow: 1;
    margin-left: 1rem;
    color: var(--primary-color);
}

.hamburger {
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    padding: 0.5rem;
    transition: var(--transition);
}

.hamburger span {
    background-color: var(--primary-color);
    height: 3px;
    width: 25px;
    margin: 2px 0;
    transition: var(--transition);
    border-radius: 2px;
}

.hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.open span:nth-child(2) {
    opacity: 0;
}

.hamburger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.navigation {
    background-color: var(--secondary-color);
    box-shadow: var(--box-shadow);
}

.navigation ul {
    list-style: none;
    display: none;
    flex-direction: column;
    margin: 0;
    padding: 0;
}

.navigation.open ul {
    display: flex;
}

.navigation li {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navigation li:last-child {
    border-bottom: none;
}

.navigation a {
    display: block;
    color: var(--white);
    text-decoration: none;
    padding: 1rem 1.5rem;
    transition: var(--transition);
    font-weight: 500;
}

.navigation a:hover {
    background-color: var(--hover-color);
}

.navigation .current a {
    background-color: var(--primary-color);
    font-weight: 600;
}

main {
    padding: 1rem;
    width: 100%;
    margin-top: 0;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    margin-top: 0;
    text-align: left;
}

section {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    margin-bottom: 1rem;
    width: 100%;
    border: 1px solid var(--border-color);
}

section h2 {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 1rem;
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
}

section .content {
    padding: 1rem;
}

#about .content p {
    font-size: 0.9rem;
    line-height: 1.8;
    text-align: justify;
    color: var(--text-color);
}

#photo {
    text-align: center;
}

#photo .content {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem 1rem;
    min-height: 300px;
}

#photo img {
    width: 250px;
    height: 300px;
    object-fit: cover;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    border: 2px solid var(--border-color);
}

#courses .content {
    padding: 0;
}

.filters {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0;
    margin: 1rem;
}

.filter-btn {
    background-color: var(--light-gray);
    border: 2px solid var(--border-color);
    color: var(--text-color);
    padding: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.9rem;
}

.filter-btn:first-child {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.filter-btn:last-child {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.filter-btn:hover {
    background-color: var(--hover-color);
    color: var(--white);
    border-color: var(--hover-color);
}

.filter-btn.active {
    background-color: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

#course-container {
    display: grid;
    gap: 0.5rem;
    margin: 1rem;
}

.course-card {
    background-color: var(--light-gray);
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-color);
    border-radius: 4px;
    position: relative;
}

.course-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(124, 45, 18, 0.15);
}

.course-card.completed {
    background-color: var(--success-color);
    color: var(--white);
    border-color: var(--success-color);
}

.course-card.completed:hover {
    background-color: var(--success-hover);
    border-color: var(--success-hover);
}

.course-card.completed::after {
    content: "✓";
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background-color: var(--white);
    color: #064e3b;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.8rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

#credits {
    text-align: center;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-color);
    margin: 1rem;
    padding-bottom: 1rem;
}

.social-icons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin: 0.5rem auto;
    padding: 0.5rem 0;
    width: 100%;
    max-width: 300px;
}

.social-icons a {
    transition: var(--transition);
    opacity: 1;
}

.social-icons a:hover {
    opacity: 1;
    transform: scale(1.1);
}

.social-icons img {
    width: 24px;
    height: 24px;
}

footer {
    background-color: var(--white);
    padding: 1rem;
    text-align: center;
    box-shadow: var(--box-shadow);
    margin-top: 0;
    border-top: 2px solid var(--border-color);
}

footer p {
    margin: 0.25rem 0;
    font-size: 0.8rem;
    color: var(--text-color);
}

footer p:first-of-type {
    font-weight: 500;
    color: var(--text-color);
}