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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Vazirmatn', sans-serif;
    background: var(--body-background);
    color: var(--text-primary);
    direction: rtl;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

.numeric-text {
    direction: ltr !important;
    text-align: right !important;
    font-variant-numeric: tabular-nums;
    unicode-bidi: plaintext;
    letter-spacing: 0.02em;
}

.numeric-text[data-inline="true"] {
    display: inline-flex;
    align-items: center;
}

body.is-scroll-locked {
    overflow: hidden;
}

.app-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    padding-top: var(--header-height);
    padding-bottom: var(--spacing-xl);
}

@media (max-width: 880px) {
    .main-content {
        padding-top: var(--mobile-header-stack, var(--header-height));
    }
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    border: none;
    white-space: nowrap;
    line-height: 1.4;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.btn-primary {
    background: var(--primary);
    color: #ffffff;
    border: 1px solid var(--primary);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--primary-light);
    border-color: var(--primary-light);
}

.btn-secondary {
    background: var(--surface-muted);
    color: var(--text-primary);
    border: 1px solid var(--surface-border);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
    background: var(--surface-card);
    border-color: var(--primary-light);
}

.btn-light {
    background: var(--surface-card);
    color: var(--text-primary);
    border: 1px solid rgba(148, 163, 184, 0.35);
}

.btn-light:hover,
.btn-light:focus-visible {
    background: var(--surface-muted);
    border-color: var(--primary);
}

.btn-outline {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(var(--backdrop-blur-glass));
    -webkit-backdrop-filter: blur(var(--backdrop-blur-glass));
}

.btn-outline:hover {
    background: var(--surface-muted);
    border-color: var(--primary);
}

.btn-submit {
    width: 100%;
    background: var(--primary);
    color: #ffffff;
    border: 1px solid var(--primary);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--primary-light);
    border-color: var(--primary-light);
}

/* Form Elements */
input:not([type="checkbox"]):not([type="radio"]):not([type="file"]),
textarea,
select {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-lg);
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    transition: var(--transition-fast);
    outline: none;
}

input:not([type="checkbox"]):not([type="radio"]):not([type="file"]):focus,
textarea:focus,
select:focus {
    border-color: var(--input-border-focus);
    background: var(--input-bg);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

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

/* Cards */
.card {
    background: var(--surface-card);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .main-content {
        padding-bottom: var(--spacing-xl);
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .btn {
        padding: 0.65rem 1.25rem;
        font-size: 0.85rem;
    }

    input:not([type="checkbox"]):not([type="radio"]):not([type="file"]),
    textarea,
    select {
        padding: 0.65rem 0.9rem;
        font-size: 0.85rem;
    }
}