/* ========================================
   Marked OS — Base Styles
   ======================================== */

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: var(--font-regular);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
svg {
    display: block;
    max-width: 100%;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    color: var(--primary-light);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    font-size: inherit;
    color: inherit;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: var(--text-base);
    color: var(--text-primary);
    background: var(--bg-card);
    border: 1.5px solid var(--border-default);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    width: 100%;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-100);
}

input::placeholder,
textarea::placeholder {
    color: var(--text-tertiary);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%236B7280' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    color: var(--text-primary);
}

h1 {
    font-size: var(--text-2xl);
}

h2 {
    font-size: var(--text-xl);
}

h3 {
    font-size: var(--text-lg);
}

h4 {
    font-size: var(--text-base);
}

.hidden {
    display: none !important;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-default);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-strong);
}

/* Focus visible */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--primary-200);
    color: var(--text-primary);
}