/* header.css - Consistent header styles for all pages */

/* Header Base Styles */
.header {
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.95);
}

.dark .header {
    background-color: rgba(15, 23, 42, 0.95);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

/* Logo Container */
.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    height: 100%;
}

.logo-image {
    height: 2.5rem;
    width: auto;
    display: block;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.logo-text-minimal {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-left: auto;
}

/* Navigation Toggle Button */
.nav-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-foreground);
    text-decoration: none;
    transition: var(--transition);
}

.nav-toggle:hover {
    background: var(--color-card-hover);
    border-color: var(--color-primary);
    transform: translateY(-1px);
    text-decoration: none;
    color: var(--color-foreground);
}

.nav-toggle svg {
    width: 1rem;
    height: 1rem;
    color: var(--color-foreground);
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: var(--color-card-hover);
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

.theme-toggle svg {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--color-foreground);
}

/* Theme Toggle Icon States */
.theme-toggle .sun-icon,
.dark .theme-toggle .moon-icon {
    display: none;
}

.theme-toggle .moon-icon,
.dark .theme-toggle .sun-icon {
    display: block;
}

/* Secondary Button */
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-foreground);
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
}

.btn-secondary:hover {
    background: var(--color-card-hover);
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

.btn-secondary.active {
    background: var(--gradient-teal);
    color: white;
    border-color: transparent;
}

/* Icon Button */
.btn-icon {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--color-card-hover);
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

.btn-icon svg {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--color-foreground);
}

/* Icon Button Icon States */
.btn-icon .icon-sun,
.dark .btn-icon .icon-moon {
    display: none;
}

.btn-icon .icon-moon,
.dark .btn-icon .icon-sun {
    display: block;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        height: 3.5rem;
    }
    
    .logo-image {
        height: 2rem;
    }
    
    .logo-text,
    .logo-text-minimal {
        font-size: 1.125rem;
    }
    
    .nav-toggle {
        padding: 0.375rem 0.625rem;
        font-size: 0.8rem;
    }
    
    .nav-toggle svg {
        width: 0.875rem;
        height: 0.875rem;
    }
    
    .theme-toggle,
    .btn-icon {
        padding: 0.375rem;
    }
    
    .theme-toggle svg,
    .btn-icon svg {
        width: 1.125rem;
        height: 1.125rem;
    }
    
    .btn-secondary {
        padding: 0.375rem 0.75rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .header-content {
        height: 3rem;
    }
    
    .logo-image {
        height: 1.75rem;
    }
    
    .logo-text,
    .logo-text-minimal {
        font-size: 1rem;
    }
    
    .header-actions {
        gap: 0.5rem;
    }
    
    .nav-toggle span {
        display: none;
    }
    
    .nav-toggle {
        padding: 0.375rem;
    }
    
    .btn-secondary span {
        display: none;
    }
    
    .btn-secondary {
        padding: 0.375rem;
    }
}

/* Focus Styles for Accessibility */
.nav-toggle:focus,
.theme-toggle:focus,
.btn-secondary:focus,
.btn-icon:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .header {
        display: none;
    }
}